U.S. Geological Survey exploration program in the Trixie area, East Tintic mining district, Utah County, Utah

Morris, H. T., Disbrow, A.E., Lovering, Thomas Seward · 1956 · Report

<p>The Trixie area is in the south central part of the East Tintic mining district, Utah, and is believed to include the intersections of several mineralized…

Public-domain full text preserved in the Mountain Man Mining Library. Original source: pubs.usgs.gov.

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X.(14-C.e7 "24,q,"41 ( U. S. Geological Survey exploration program in the Trixie area, East Tintic mining district, Utah County, Utah By

H. T. Morris, A. E: Disbrow / S.,i4 NsIII NGroW Fy and T. S. Lovering JUN `1::11956 U. S. Survey 0'2Y ' " J:ITORT ',L1,1 1146 Th!r7 , 'or eQnfoam-Lly 1 . Ertandards .1Itulac.41-.)* L

Albers - Int F (1( A MEPIGEWITIr OF OR4II001 "Ali M5 INFORMATION SERVICE JUN 2 0 1956 CH 3 GEOLOGICAL SURVEY L/BRAO For Release JUNE 20, 1956 RESULTS OF EXPLORATION DRILLING IN EAST TINTIC MINING DISTRICT, UTAH, RELEASED FOR PUBLIC INSPECTION A preliminary report on the results of a recent geochemical prospecting study and a test drilling project in the Trixie area, East Tintic district, Utah, has been released for public inspection, the Geological Survey announced today, The Trixie area is approximately miles southwest of the famous Tintic Stand­ ard mine in Utah County, Utah, and includes unexplored and undeveloped portions of such well-known mining properties as Eureka Standard, South Standard, and Eureka Lilly Consolidated. During the summer months of 1954 and 1955, nine exploration holes were drilled for the Geological Survey, under contract, near the Trixie prospect to investigate the possible relations of surface geochemical anomalies to "blind" mineralized bodies concealed beneath unmineralized rocks several hundred feet thick. Surface geochemical anomalies are largely confined to areas of bleached and altered rocks through which are dispersed minute amounts of copper, lead, and zinc minerals that may be related to concealed ore bodies. Similarly altered areas have been successfully used elsewhere in the East Tintic and other mining districts as a guide in mineral exploration. The results of the investigation are given in a report that describes the location, geology, hydro­ thermal alteration and mineralization of the Trixic area and includes a geologic map, geochemical sample location maps, drill logs and tables of analytical data. The report titled "U. S. Geological Survey Exploration Program in the Trixie area, East Tintic mining district, Utah County, Utah," by H. T. Morris, A. E. Disbrow, and T. S. Lovering has been placed in open file in the libraries of the Geological Survey in Washington, D. C., Denver, Colo., and Menlo Park, Calif., in the Public Inquiries Office of the Geological Survey in Salt Lake City, Utah, and at the office of the Geological Survey in Eureka, Utah. Persons interested may inspect the maps and rcad the report in these offices, but copies are not available for sale cr distribution. P.N. 101401

CONTENTS Page Abstract -y- Introduction eLocation t 111' Physical features

Previous work Present study Geology Geologic setting Sedimentary rocks Igneous rocks Extrusive rocks Packard quartz latite Laguna Springs latite Intrusive rocks Structure Hydrothermal wall rock alteration Geochemical anomalies /Geophysical anomaly 'Exploration "Exploration targets 21+ 'Physical exploration

Contents (continued) Log of Tintic Standard Church Drill Hole No. 12 . . . 26 Bulldozer trenches Drill holes Conclusions Bibliography

ILLUSTRATIONS Figure 1. Index map of Utah showing location of the Tintic and East Tintic mining districts. 2. Geologic map and vertical section of the Trixie area, East Tintic district, Utah. 3. Geochemical sample location map showing distribution of copper in surface rocks, Trixie area. 4. Geochemical sample location map showing distribution of lead in surface rocks, Trixie area. 5. Geochemical sample location map showing distribution of zinc in surface rocks, Trixie area. TABLES Table 1. Detailed logs of drill holes 2. Analytical data on drill cuttings and drill cores

ABSTRACT The Trixie area is in the south central part of the East Tintic mining district, Utah, and is believed to include the intersections of several mineralized pebble dike-fissure zones and a major, easterly trending fault. The fissure-fault intersections,which are considered to be favorable ore-locallizing structures, are concealed by lavas and tuffs several hundred feet thick that are strongly bleached and altered and which contain positive geochemical anomalies. During the summer months of 1954 and 195 the U. S. Geological voikk et-vt&c,' Ak'eu Survey 9 exploration dcAIZ holesrin the ixie area: 1) to A investigate the relations of surface geochemical anomalies to possible concealed ore, 2) to determine the structure and stratigraphic units in the sedimentary rocks concealed beneath the lava, and 3) to further develop and refine geologic and geochemical techniques that may be useful in prospecting for concealed ore deposits in the East Tintic and other mining districts. This report briefly discusses the geology, hydrothermal alteration, and geochemical and geophysical anomalies in the Trixie area and pre­ sents the logs of the drill holes and tables of the copper, lead, zinc, and silver content, expressed in parts per million, of the drill cuttings and drill core.

INTRODUCTION During the summer months of 1954 and 1955 9 exploration holes were drilled for the U. S. Geological Survey, under contract, near the Trixie prospect in the southern part of the East Tintic mining district, Utah. This project was part of a general program of intensive stratigraphic, structural, alteration, geochemical, and geothermal investigations car­ ried out in the East Tintic Mountains since 1943 to develop techniques of prospecting for the "blind" (concealed) ore bodies. The Trixie area was selected without regard to ownership because it had not been ex­ plored adequately in depth and was believed to include the intersection of several mineralized pebble dike-fissure zones and a major, easterlytrending fault. The fault, which cuts only the sedimentary rocks, is concealed beneath several hundred feet of barren lava strongly altered by late pre-ore, hydrothermal solutions. Several moderately strong geochemical anomalies occur in the lavas chiefly along the pebble dikefissure zones and in the rubble and tuff horizon at the base of the extrusive rocks. This report describes only the geology and exploration of the Trixie area. The East Tintic district has been described more compre­ hensively by Lindgren and Loughlin (1919), Kildale (1938), and Lovering, et al. (1949) and the reader is directed to these reports for the regional geologic setting.

The writers wish to acknowledge the wholehearted cooperation of M. D. Paine and N. Cristensen, president and resident superintendent, respectively, of the Tintic Standard Mining Company which controls the properties that are included in the area that was drilled. W. W. Janes and James Prentice, U. S. Geological Survey, contributed valuable assistance in the surface and drill hole sampling program; numerous other individuals contributed directly or indirectly to the geologic investigations and the drilling program and are specifically acknowl­ edged in the text of this report and on the maps.

Location.--The Trixie area is located in Silver Pass Canyon near the southern margin of the East Tintic mining district in the S 1/2 SE 1/4 sec. 21 and N 1/2 NE 1/4 sec. 28, T. 10 S., R. 2 W., SLB and M. (See Index map, Figure 1 and Index map; Figure 2.) It is approximately 1 1/3 miles by road southwest of the Chief Oxide area (Lovering; et al., in preparation). The area selected for detailed exploration is along the west side of the Silver Pass road approximately .8 mile by road south of the Denver and Rio Grande Western Railroad siding near the Eureka Standard shaft. The nearest productive mines are the Zuma 3,250 feet west-northwest, the Iron King No.2 3,800 feet north, the Eureka Standard 4,100 feet north-northwest, and the Apex Standard No.1 4;700 feet northeast. Physical features.--The larger part of the area is a shallow topo­ graphic basin surrounded by low hills. It has a maximum relief of ap­ proximately 700 feet and ranges in elevation from 5,800 to 6,500 feet. The main drainage courses are floored by irregular thicknesses of alluv­ ium but the bedrock hill slopes are virtually barren of soil and talus. Vegetation is sparse and consists chiefly of sage and rabbit brush with scattered junipers and piton pines; no timber is available locally for mine use. There are no flowing streams, but water is available from the Goff Spring-Dividend pipe line which crosses the Tr. No. 1 drill site.

Previous work.--Numerous test pits and shallow shafts indicate that the altered and mineralized lavas and sedimentary rocks in the Trixie area did not escape the attention of the early prospectors. How­ ever, none of the workings exceeds 125 feet in depth, and although ore minerals were found in a few of them it is doubtful that ore of commer­ cial grade was produced from any of the prospects shown on the map, Figure 2. The Trixie area was first mapped geologically by G. W. Tower, Jr. and G. 0. Smith of the U. S. Geological Survey in 1892, and later by G. F. Loughlin in 1911, also of the Survey. It was mapped later in more detail by mining company geologists, principally by G. W. Crane in 1924, by Paul Billingsley in 1926-27, and by M. B. Kildale and F. W. Anderson in 1939, but the maps prepared are available only in private reports. During the summer and fall months of 1946 geologists and geophysic­ ists of the U. S. Bureau of Nines under the direction of F. H. Gunnell and K. L. Cook selected the Trixie area and the region 1/2 mile to the north of it for a detailed application of: ...modern scientific techniques of prospecting which might help discover ore following methods that the U. S. Geological Survey had developed and used elsewhere in the East Tintic district." These techniques included geology, spectroscopy, geochemistry, and geophysics. The Bureau of Mines did not take their exploration pro­ gram into a drilling stage, but recorded their data in file reports.

A copy of the geophysical report (Cook, 1947) and copies of geological and geochemical anomaly maps by Cook, Gunnell, and Young were made available to the writers by Mr. Cook in 1952. The geophysical data were carefully considered in conjunction with other data in locating the sites for drill holes Tr. No. 7, Tr. No. 7a, and Tr. No. 8, but major dependence was placed on the geochemical studies and the detailed geologic maps prepared by the writers.

Present study.--The geology of the Trixie area was mapped by the writers in 1946 and 1947 at a scale of 1:4800 and again in 1954 at a scale of The surface geochemical anomaly that adjoins the Trixie prospect was first recognized from samples collected by H. T. Morris in 1948 and analyzed by Hy Almond, chemist of the U. S. Geol­ ogical Survey. It was confirmed and more precisely delineated by sampling programs carried out during the summer months of 1954 and 1955. The U. S. Geological Survey drilling program was undertaken in 1954 and 1955, and was carried out in two parts: Holes Tr. No. 1 through Tr. No. 4 were drilled during the month of June 1954, and holes Ti'. Sf,. ') through Tr. He, 8 were drilled during the summer months of 1955. The first four holes were drilled to test the surface geochem­ ical anomalies at depth and to determine the thickness and extent of the volcanic rocks. These holes were limited to 300 feet in depth and only one of them, Tr. No. 3, penetrated sedimentary rocks. No further work was done in the area until March 1955 at which time four bulldozer cuts were made and the first deep hole was drilled. In all, five deep holes were drilled in 1955 to determine the position of the fissures and faults in the sedimentary rocks, and to prospect the intersections of the pebble dike-fissure zones and the Teutonic fault from the hang­ ing wall side. The drilling was stopped late in August of that year, but without fully testing the limestone section of the downfaulted structural block.

GEOLOGY Geologic setting. --The East Tintic Mountains in which are located the East Tintic, Tintic, and North Tintic mining districts, are in the east-central part of the Great Basin and trend northerly as do most of the mountain ranges in the Basin and Range province. The consolidated rocks of the range exceed 35,000 feet in total thickness and range in age from Precambrian to Permian. They are folded into a series of large, asymmetric anticlines and synclines and are cut by many thrust, strike-slip, and steep normal and reverse faults. The sedimentary rocks, which were folded and deeply eroded prior to volcanic activity, are overlain by a series of quartz latite tuffs, porphyritic flow rocks and vitrophyres, the Packard quartz latite series, and by a younger sequence of latite flows and tuffs, the Laguna Springs latite series. Both series are of Middle Eocene age. Cutting the sedimentary rocks and the lavas are sills, dikes, and mall plugs of monzonite and injection breccia dikes (pebble dikes) composed chiefly of abrasion-rounded pebbles of quartzite and a few fragments of shale, limestone, and igneous rock. The Trixie area is situated at the southeast edge of a large isolated inlier of sedimentary rocks that crops out in an erosion window cut through overlying lava flows and tuffs (see geologic map in fig. 2). This exposure of sedimentary rock is about one-half mile in width and extends two miles northerly to the general area of the Tintic Standard and North Lily mines.

Sedimentary rocks.--The sedimentary rocks exposed near the Trixie prospect or cut in the drill holes are all of Cambrian age and are com­ posed of dolomite, limestone, shale, and quartzite. They are subdivided into 7 formations which are summarized in Table 1.

Table II/

11.v.terrtarMiddle Cambrian Middle Ct:i.mbrian Middle Cambrian Middle Cambrian Formation and ?gamers) Cole Canyon dolomite top not ex­ posed in Trixic area) Bluebird dolomite Herkimer limestone. Upper lime­ stme mother) 3ba1e mem­ ber.) Lowcas stone mumbc,r) DaGmar limestone Thickno=.4s in Lembors) 0. ON dotal thickness of f.)rmation) 180.- 2a; Normal litholoi,ic characteristics Unconsolidated deposits, chiefly colluv­ ium Alternatin6 beds of licht 6ruLy and dusky blue- ray, finr-: to coarse grained dolomite. Light colored beds are from 2 to 25 feet thick. Dark c.,)lored beds are from 10 to 30 foot thick. use finely banded beds are common, especially in li6ht ally. variety. Dark beds are chiefly czArse graiaed and spaneled *with snow.white twig-shaped bodies. Nodules of ;ray and black chert occur sparsely at horizons 90 and 130 feet above base. Overlyiris f.Drmatiom 1..re not exposed in the area shown iL Plan, Figure 2. Dusky blue-,jay, fine to ~se grained dolomite; massively bedded; contains abund­ ant trig-shaped bodies 1/4 to 3/4 inches lonz and about 1/8 irch in diameter. Thin bedded, argillaceous limestont, with some shale parties interbedded with flat-pebble limestone conglomerates and ..;olitic limestones. Fissile, 6reen„ limy shale interbedded with flat-pebble conglomerate end thin layers of say limestone. B11..w-,7e,y, medium bedded limestone mottled and streaked with many, thin, diecontinuous layers of red and yellowltather­ ing mudstone. LiLht gray, Iimy dolomite, weathers creamy white; eharacteristic8A1y dense and finely laminated; displays a blocky fracture habit. The Dmizmar is an excellent marker bed but is not exposed IL the area shown in the map, Figure 2, and was not cut by any of the drill holes.

Table I continued) Middle Cambrian Middle Cambrian 'fewer Csmbrian Teut.mic limestone Ophir fe.­,rmatim Upper shale member) stone meMbr) tower shale me.raber ) Tintic quartzite bas not exposed IR a.st Tintic minine, district. Thickness in feet pothers) 40o-430 91-100) 145 -160) 'locally 100 foet thick—) ;173-190) 2,800 to 3,20C total thicRn3ss of formi.4tion. Normal litho1oj characterlet4cs Dominantly fine :rained, blue-gray lime­ stone, medium to thin bedded; many oolitic and plsolitic beds in middle and upper parts if formation; lower ?art mottled and streaL­ ed with yellowiah brown wmtherIng; limy mudstone bands w inch or two thick;~ basal bed contains !z.lobtiligar al,Lal structures 1/8 inch to 1/2 inch it die ter. Buff to 6rap.green, fissile shale with numerous lenses of limy sand and sandy shale. Dcmlnantly limeatone interlayered with shale beds frma 5 to 40 feet thick; entire member Dossibly rend resented by a single limestone bed 90 to 110 feet thick in ex­ posures 1,000 feet east of Trixie prosloect; lowest limestone bed, 5 to 3.0 feet thick in the area of Tintic `3tenda.rd and Apex F7tand­ ard mince is characterized by an eibundauce of fossil fragments. 143Ter 70 to tiO feet grey-6reen, non.­ calcareous shale; a persistaut bed of blue­ 6 ray limestone locally altered to brown watherin4 dolomite, 10 feet thick, occurs about r feet .,eve base; lower part of member consists of interbedded, fissile ctAlcareems Inad sandy shale with lenses of porous, ovrple quartzite near Dominantly light-colored, medium bedbed, vitreous quartzite:1 interlayered with micaceous sh, le in upper :100 feet and quartzite coak:loaerate ia lower 6or feet. round only in the drill holes in Trixie :Lrekt .

The principal ore horizon in the East Tintic district is the middle member of the Ophir formation, which produced approximately two-thirds of the ore --valued in excess of 75,000,000 net--credited to the mines of the East Tintic district. Production from the Tintic quartzite pro­ duced 10 to 20 percent of the total and the remainder came from the other formations listed in Table 1. The unconsolidated deposits of the Trixie area consist of alluvium, colluvium and talus but are unimportant except where they conceal the structure, alteration, and geochemical anomalies of the underlying bed­ rock. Igneous rocks.--The extrusive and intrusive rocks exposed in the general proximity of the Trixie prospect all have been altered to a greater or lesser degree by hydrothermal solutions, but are well known from extensive exposures of unaltered rocks nearby. Extrusive rocks Packard quartz latite.--Where they are unaltered, the porphyritic flow rocks of the Packard quartz latite series are light bluish-gray in color, medium grained to dense. The phenocrysts commonly make up about 20 percent of the rock and include andesine (An4o to An55), sani­ dine, biotite, and quartz. Orthoclase and basaltic hornblende occur as phenocrysts in some flows but are not common. The groundmass ranges from a dark glass crowded with trichites and crystallites arranged in contorted fluxion structures, to a microgranular mosaic of quartz, sodic orthoclase, and andesine. Apatite, magnetite, and zircon are common accessory minerals. Nearly everywhere these flow rocks overlie light colored, fine to medium grained tuffs composed of fragments of quartz, andesine, and sanidine in a matrix of devitrified glass shards. Fragments of igneous rocks as much as 1/2 inch in diameter and walnut-sized pebbles of quartzite are present locally in the tuffs but are not common.

Laguna Springs latite.--The Laguna Springs latite volcanic series overlies the Packard quartz latite but only the lower-most tuffs and flows are exposed in the Trixie area. The basal Laguna Springs tuffs are coarser grained than the tuffs at the base of the Packard series and commonly contain rock fragments several inches in diameter. Frag­ ments of quartz are nearly as numerous as in the Packard tuffs but the Laguna Springs tuffs contain many more rounded pebbles of quartzite than similar beds in the Packard. The porphyritic flow rocks of the Laguna Springs volcanics exposed near the Trixie prospect and Trump shaft are medium to dark reddish- or purplish-brown, medium grained and dense. Phenocrysts make up somewhat less than 20 percent of the rock and consist almost equally of basic andesine, sanidine and biotite. Augite is only slightly less abundant than biotite but is less easily recognized in hand specimen; hypersthene is also present in some flows. Hornblende is rare and quartz is con­ spicuous by its absence except for embayed and partly digested fragments of Tintic quartzite that closely resemble quartz phenocrysts. Where both rocks are intensely bleached and altered the Packard quartz latite flows can be identified by the rounded and embayed phenocrysts of dark quartz that are essentially unchanged; the Laguna Springs latite flow rocks are identified by the absence of quartz phenocrysts and by the presence of altered phenocrysts of augite, hornblende, or hypersthene. 1_5

Intrusive rocks Within a few hundred feet both south and west of the Trixie pros­ pect the sedimentary and extrusive igneous rocks are cut by dikes, plugs, and a small stock of moderate to coarse grained monzonite porphyry, and by pebble dikes. The monzonite porphyry ranges in composition from augite-biotite monzonite to hornblende-biotite quartz monzonite. It is medium grained porphyritic and consists chiefly of zoned andesine (An35 to An45) and sanidine in nearly equal amounts, ferromagnesian minerals, and small grains of quartz (commonly less than 5 percent) both as phenocrysts and as fragments from the underlying Tintic quart­ zite. Biotite is common and is associated with either augite or horn­ blende in amounts almost equal to it. The phenocrysts lie in a microgranular groundmass that contains considerable orthoclase in addition to andesine and minor quartz. Zircon, sphene, and basaltic hornblende occur as accessory minerals.

Pebble dikes are common in the Trixie area and cut the volcanic and the sedimentary rocks. The pebble dikes are tabular, dike-like bodies a few inches to several feet thick and a few feet to several hundred feet long. They are composed chiefly of rounded or sub-rounded fragments of Tintic quartzite with some younger rocks embedded in a matrix of fine grained angular fragments of quartzite, comminuted shale and locally powdered and re-crystallized limestone. Quartzite makes up more than 90 percent of the fragmental material, and less than 2 per­ cent appears to have been derived from rocks above the Tintic. The pebbles range from 1/4 inch to several inches in diameter and many of them show "onion skin" structure consisting of a single concentric spall about 1/10 inch in thickness. The dikes are in the same systems of north-northeasterly-trending fissures that are occupied by the mon­ zonite dikes and many apparently rest on top of monzonite dikes or occur alongside them. The majority of the pebble dikes are believed to have been explosively injected along pre-existing fissures by the action of rapidly expanding gases and superheated steam, and many apparently rode later further upward on top of invading monzonite dikes. The pebble dikes locally are silicified and contain ore minerals and are believed to be useful guides to areas favorable for the occurrence of concealed ore bodies.

Structure .--The area shown in them.,,A /:La at or close to the crest of the northerly p3.urging East Tintic anticline which isla.tetiailt,'\' concealed by lava throughout most of the East Tintic district. The sed­ imentary strata dip at low angles to the west, north, and east and are cut by many steep and low angle faults and by a multiple zone of north­ northeasterly-trending fissures, in part occupied by monzonite and pebble dikes. The area that was explored at depth in the exploration drill holes is believed to be at the general intersection of the multiple pebble dike-fissure zone and a moderately strong, easterly striking, normal fault. This fault, which is considered to be a faulted and displaced ex­ tension of the Teutonic fault exposed on the east side of Silver Pass Canyon 750 feet east of the Trixie prospect, is entirely concealed but is interpreted to bring the Teutonic limestone and Ophir shale and possibly younger rocks in contact with the upper part of the Tintic quartzite under a capping of volcanic rocks 400 to 600 feet thick (see Section A-A; Figure 2). The Teutonic fault apparently dips steeply to the north and forms the south boundary of an east-northeasterly-trending structural trough, the north boundary of which is the Apex Standard reverse fault.

The Apex Standard fault, where it is exposed a half mile north­ east of the Trixie prospect, strikes N. 48° E. and dips to the north with a curved fault plane that becomes steeper with depth in the work­ ings of the Apex Standard No. 1 mine. At its closest exposure to the area drilled, the strike of this fault appears to change to N. 65° E. but within a short distance the fault trace is concealed by alluvium and lava. The Eureka Standard fault, which crops out a few hundred feet north of the Apex Standard reverse fault, is the only other major fault that may be projected with assurance into the Trixie area. It strikes N. 47° E., dips to the north at 50° and shows an apparently normal dis­ placement of approximately 1,200 feet; however, much of the movement may be the strike-shift type. The exact position of the concealed Eureka Standard fault in the Trixie area is not known, but regional studies indicate that it swings westerly in the southern part of sec. 21, T. 10 S., R 2 W. and may represent the easterly extension of the Sioux-Ajax fault of the Tintic district. In the Eureka Standard and Apex Standard No. 2 mines small but comparatively high grade gold, copper, silver, and lead ore bodies were localized along the Eureka Standard fault and in upward flaring, steeply dipping fractures and pebble dikes in the footwall block close to the fault plane.

A northerly to northwesterly striking fault of moderate displace­ ment is believed to be concealed by the alluvium that underlies the small gulch parallel to Silver Pass Canyon 700 feet east of the Trixie prospect. The existence of this fault is postulated chiefly on the apparent displacement of the Teutonic fault and stratigraphic relation­ ships between sedimentary rocks exposed on either side of the small gulch where it enters Silver Pass Canyon. (See geologic map in fig. 2.) An easterly striking concealed fault was cut in the Trixie No. 4 inclined drill hole in the footwall block of the Teutonic fault. The outcrop of this fault is probably close to the northeasterly striking zone of silicified, brecciated latite exposed 165 feet northwest of the Trixie prospect. The drill hole data and surface geology sug7est that this fault strikes N. 65° E., dips vertically or steeply to the south and has a post-lava displacement of approximately 300 feet. Numerous faults of snail to moderate displacement cut the sedi­ mentary rocks in the structural trough between the Teutonic and Apex Standard faults on the east side of Silver Pass Canyon but extensive hydrothermal alteration of the limestone beds makes it difficult to trace these structures and determine their displacement.

The prominent pebble dike zone that intersects the faulted ex­ tension of the Teutonic fault below the lava cover about 350 fo 400 feet due north of the Trixie shaft, trends from N. 20° E. to N. 30° E., and dips steeply to the west. It cuts the northeasterly-trending faults with no discernible offset and unlike most of the faults, also cuts the volcanic rocks. The fissures are marked at the surface by linear zones of altered latite and for short distances they are occupied by monzonite and pebble dikes. The multiple pebble dike-fissure zone which includes several individual linear pebble dike zones, is at least 500 feet wide in the Trixie area and is traceable for nearly two miles southwestward as a zone of pyritized lava cut by pebble dikes, scattered monzonite plugs and dikes, and reef-like linear masses of silicified latite. Where the zone enters the Silver City monzonite stock the fissures are aligned with the Treasure Hill-Alaska vein system and may repre­ sent its northern extension. A parallel linear group of pebble dikes which may belong to the same zone cuts the lavas and sedimentary rocks on the east side of Silver Pass Canyon approximately 800 feet east of the Trixie prospect These pebble dikes and fissures were not studied in detail or sampled during the present survey s

Hydrothermal wall rock alteration.--Hydrothermal solutions essen­ tially contemporaneous with volcanic activity and culminating in ore deposition have altered all of the rocks in the Trixie area. Five separate stages of alteration are recognized and have been described in considerable detail in another report (Lovering, et al., 1949). These stages are: 1) the early barren stage; 2) the mid-barren stage; 3) the late barren stage; 4) the early productive stage; and 5) the productive or ore depositing stage. The early barren stage is repre­ sented in the Trixie area by the hydrothermally dolomitized Cambrian limestones and the chloritized basal units of the Packard quartz latite series and the Laguna Springs latite series. During the mid-barren stage the extrusive rocks were argillized adjacent to the monzonite intrusives, and the hydrothermal dolomite of the early barren stage was severely leached and sanded. The late barren stage is represented by pyritized lavas and disseminated pyrite in the altered sedimentary rocks. During the latter part of this stage the pebble dikes and fissure-breccias were silicified and some chlorite minerals, chiefly delessite, waft sparsely disseminated in the sedimentary and volcanic rocks. Early productive stage alteration is inconspicuous in the Trixie area as it is elsewhere in the East Tintic district,but is probably represented by sericite and hydromica deposited in and adja­ cent to the silicified pebble dikes and in the mineralized sedimentary rocks cut in the drill holes. The productive stage is represented in the Trixie area by terminated clear quartz crystals, barite, pyrito­ hedral pyrite, and by sphalerite, galena and other primary ore minerals found in the drill cuttings and diamond drill core of the altered min­ eralized sedimentary and igneous rocks, and by the oxidized copper, lead, and zinc minerals in the areas of the surface geochemical anomalies.

GEOCHEMICAL ANOMALIES The altered volcanic and sedimentary rocks in the Trixie area contain anomalous dispersions of lead, zinc, copper, and silver as revealed by trace chemical analysis. (See Figures 3, 4, 5, and Appen­ dix 2.) These dispersions, or"geochemical halos," were one of the principal factors that led to the decision to diamond drill the area to learn more about the third dimension of the anomalies and their possible relation to concealed ore bodies. The geochemical anomalies proved to be of the primary or "bedrock" type and were evident in the drill holes at depth as well as at the surface. The heavy metals were deposited by solutions that conceivably could have deposited ore at depth, and thus may be a useful but not infallible guide to ore bodies concealed beneath the relatively barren strata that contain the geochem­ ical halo. The geochemical anomalies at the surface in the Trixie area are essentially restricted to the brecciated and altered rock in and along the north-northeasterly-trending fissure zones except for the sanded and altered sedimentary rock immediately below the capping of volcanic rocks which contained appreciably heavy metal away from the fissure. Little, if any, dispersion of heavy metals was recognized elsewhere in the altered rocks except locally where they had been fractured, and leached by hydrothermal solutions. The heavy metal content represented by the surface anomalies in the igneous rocks is much modified both in concentration of metals and areal extent, chiefly because of oxidation and leaching of copper and zinc, and the anomalies are recognized chiefly and most reliably from residual trace concentrations of lead which appar­ ently has not been redistributed to any appreciable extent. However, zinc and copper as well as lead appear to remain close to the original site of deposition in limestone and dolomite, and thus all three metals occur in the geochemical anomalies in the sedimentary rocks.

The surface geochemical anomaly adjacent to the Trixie prospect pit is localized in altered sanded dolomite in contract with the over­ lying tuffs, and in the silicified and iron stained, pre-lava talus and rubble zone between the sedimentary and volcanic rocks. Zinc appears to be the principal heavy metal dispersed in this material and is associated also with large amounts of sooty manganese minerals which contain minor but assayable quantities of silver. The pebble dike-fissures that extend north-northeasterly through this zone appear to have been the channelwvs used by the solutions that deposited the heavy metals and themselves are sporadically mineralized. The geo­ chemical anomaly along the silicified, westernmost fissure zone is associated with vuggy, pyritic jasperoid. The geochemical anomalies that were found in the drill holes are in part downward extensions of surface anomalies and in part are minor concentrations of heavy metals along structural features that do not crop out at the surface. These heavy metal concentrations appear to be strongest along pebble dikes and north-northeasterly-trending silicified fissure zones; they also occur at or near the contact of volcanic and sedimentary rocks, adjacent to monzonite dikes and sills, and in fault gouge and breccia. The heavy metal anomalies appear not to lie directly above the structural zones considered most favorable for the localization of large ore bodies, and in conjunction with alteration, stratigraphy, structure, and ore habits, are believed usefUl in outlining areas that warrant deep exploration.

GEOPHYSICAL ANOMALY A gravimetric survey conducted in 1946 by K. L. Cook, then employed by the U. S. Bureau of Mines, revealed the presence of a negative grav­ metric anomaly with a magnitude of at least 0.4 to 0.5 milligals in the area between the hill south of the Trixie No. 7 and No. 8 drill holes and the right fork of Silver Pass gulch. Cook (1947, p. 1) inter­ preted the anomaly "as being caused by a shattered zone which may be a locus of mineralization" and recommended test drilling. However, Cook (1947, p. 23) warned that part of the anomaly coincides almost exactly with the trend of the right fork of Silver Pass gulch and possibly could be interpreted as an expression of deep unconsolidated material. Cook (1947, p. 24) further states that in the southeastern part of the area of anomalous gravity the isograds "cross the topographic contours abnormally and suggest that here a true gravity anomaly exists."

Detailed mapping and test-pitting by the U. S. Geological Survey in the area of the negative anomaly indicated the "wash" to be under­ lain at a shallow denth by bedrock, and showed that the alluvial de­ posits were relatively thin. The Tr. No. 7, Tr. No. 7a, and Tr. No. 8 drill holes are well within the area of the anomaly and penetrated only small thicknesses of unconsolidated material. The logs of these holes show that the area of the negative anomaly is underlain by a sub­ stantial thickness of highly altered tuffs and lavas and severely leached and sanded hydrothermal dolomite. 'Then given this information, Cook (personal communication, 1955) associated the negative anomaly with the leached and altered tuffs that are uncommonly thick, probably due in part to post-1'Iva displacement along some of the faults. EXPLORATICN Exploration targets.--The geologic structures that were considered favorable for localizing ore and that were selected as the exploration targets are the intersections of the north-northeasterly-trending, min­ eralized fissures and the east-northeasterly-trending Teutonic fault along which a thick section of limestone in the hanging wall block is faulted against the Tintic quartzite in the footwall block. Other ex­ ploration targets are believed to occur within the block of limestone along fault and pebble dike-fissure zones other than the Teutonic fault, and also in brecciated zones that probably occur along the Apex Standard reverse fault. Because only limited funds were available for drilling, not all these targets could be explored.

Physical exploration.--All existing prospect workings in the Trixie area were studied prior to undertaking additional exploration. However, these workings either are not sufficiently deep or are not favorably situated to explore the structural intersections listed above. The Trixie prospect is completely caved and filled but the size of the dump indicates a single compartment shaft or test pit approximately 25 feet deep. The Trump workings consist of a 3 compartment shaft 94 feet deep; the South Standard shaft is 3 compartment and 102 feet deep but no lateral workings extend from it. Several shafts, all less than 100 feet or so deep, and a number of short adits have been driven to prospect the altered limestones and shales north of the Teutonic fault on the east side of Silver Pass Canyon. None of these workings explore structures believed to be important in the present study. A churn drill hole (T. S. 12 on map in fig. 2) 1,501 feet deep was drilled in the hanging wall of the Eureka Standard fault 1,400 feet N. 50° W. of the Trixie prospect by the Tintic Standard Mining Company prior to World War II. This hole, the generalized log of which is presented below, is located in the hanging wall block of the Eureka Standard fault and did not test the structural blocks drilled under the auspices of the Geological Survey. No mineralized horizons were recognized in this hole and presumably it was bottomed at the per­ manent water table, without testing the middle limestone member of the Ophir formation.

Log of Tintic Standard Churn Drill Hole No. 121/ Depth of hole (in feet) Rocks encountered C'-275 Packard quartz latite flows, pyritized. Packard quartz latite tuffs, pyritized. Cole Canyon dolomite. Bluebird dolomite. Herkimer limestone; partly dolomitized and locally jasperoidized, between 770 and 930. Herkimer shale 810-850. 1020-1100 Dagmar dolomitic limestone. 1100-1501 Teutonic limestone, presumably near base; dolomitized. 1/ Logged by H. T. Morris and T. S. Lovering from cuttings preserved in the engineering office of the Tintic Standard Mining Company at Dividend, Utah. .2./ Hole bottomed at or near the permanent water table without cutting the Ophir formation.

Bulldozer trenches The bulldozer trenches cut under the auspices of the Geological Survey are all within the area of altered and weakly mineralized latite just north of the Trixie prospect. Trench "A" is 110 feet N. 52° E. of the Trixie prospect; it is 50 feet long, 7 feet wide and averages about 2 1/2 feet deep. The cut exposes the erosional contact of the basal Laguna Springs latite tuffs with the Teutonic limestone. This contact strikes N. 71 E. and dips 80 N. The limestone is dolomitized and cut by narrow seams of iron and manganese oxides. Selected samples of this material returned assays of as much as 0.7 percent zinc and a few tenths of an ounce of silver per ton. The latite tuffs in the trench are bleached a dazzling white, probably as a result of oxidation of disseminated pyrite. Trench "B" is ap;Droximately 50 feet N. 7° E. of the Trixie pros­ pect. It extends N. 360 W. and is 55 feet long, 7 feet wide and averages 4 feet deep. It did not cut through the colluvial overburden and hardpan. Trench "C" is 90 feet N. 40° W. of the Trixie prospect and runs N. 29 E.; it is 75 feet long and about 5 feet deep. Bedrock is exposed only at its northernmost end and consists of weathered, pyritized Laguna Springs latite cut by an east-northeasterly-trending silicified fault zone. The silicified rock weathers in relief and projects through the overburden as a reef-like mass a few feet wide. In addition to dissem­ inated pyrite, the silicified latite contains small amounts of oxidized copper minerals, whose presence was confirmed by geocheLical tests.

Trench "D" is 145 feet N. 58° W. of the Trixie prospect and is about 70 feet long. It runs N. 18° W. and ranges from 2 to 7 feet in depth. This cut exposes the west end of the reef of silicified latite tuff and the weathered pyritic latite tuff that adjoins it. Drill holes The nine holes that were drillerlily the Geological Survey. range A' from 55 to 945 feet in depth and are all within a radius of six hundred feet of the Trixie prospect. Four of these holes were drilled to test the persistence in depth of a surface geochemical anomaly, two were drilled to locate the concealed faulted extension of the Teutonic fault, and two were located to test the hanging wall of this fault for ore bodies or masses of favorably altered rock. One hole, Tr. No. was lost before completion and was replaced by Tr. No. 7a located 29 feet northwest of the lost hole. As indicated by the work when com­ pleted, neither of the two deepest holes was favorably placed to ade­ quately test the target area. Hole Tr. No. 1 is at grid coordinates 24,963 N., 21,940 E. and is 301 feet deep. It did not penetrate the sedimentary series but was confined to altered tuffs and lavas of the Packard and Laguna Springs volcanic series. Small amounts of sphalerite and galena were observed in drill cuttings between 30 feet and the bottom of the hole and also in drill cores of silicified tuff that were taken between 70 feet and the bottom of the hole. The upper 70 feet of this hole was drilled with a Hawthorn-type rock bit and no core was taken.

Hole Tr. No. 2 is approximately 6 feet north of hole Tr. No. 1 at grid coordinates 24,969 N., 21,941 E., and is 55 feet deep. It was drilled to obtain core from the mineralized zone not cored in the upper part of hole Tr. No. 1. The mineralized zone proved to be fissured and brecciated, altered tuff cemented by narrow veinlets of pale, blue-gray quartz through which is disseminated barite and lead and zinc sulfide minerals. Drill hole Tr. No. 3 was drilled at grid coordinates 24,795 N., and 22,004 E. and is 80 feet deep. From the surface to a depth of 10 feet it penetrated colluvial overburden, from 10 to 30 feet oxidized pyritic quartz latite tuff and from 30 to 80 feet altered dolomitic limestone was cored. Assayable quantities of zinc were found in the altered limestone, especially near the contact with the overlying tuff, and veinlets of quartz, barite and pyrite were noted in some of the core. Hole Tr. No. 1i was drilled essentially mid-way between holes 1 and 3 at grid coordinates 24,889 N., 21,918 E., but it did not penetrate that base of the tuffs. It is 105 feet deep. Hole Tr. No. 5 which was drilled approximately 1 year later showed that hole Tr. No. 4 was in the north or footwall block of a small reverse fault which brings tuff in the north block against limestone and shale of the Ophir formation in the south block. Lead and zinc sulfides were observed in drill cuttings from several zones in the hole and also were noted in the core of the silicified and pyritized tuff.

Hole Tr. No. 5 was the only inclined hole drilled during the exploration program; it is near hole Tr. No. 1 at grid coordinates 24,952 N., 21,936 E. The average angle of inclination of the hole is 66° and its direction is due south; the total length of the hole is 313 feet and the vertical depth of the bottom of the hole below the surface is 285 feet. The upper part of the hole is in pyritized latite and quartz latite lithic and crystal tuff to a slanted depth of 188 feet, where it enters the lower part of the middle limestone member of the Ophir formation, which is in fault contact with the volcanic rocks. The fault is marked by a silicified gouge zone 3 feet thick that apparently corresponds with the linear mass of silicified tuff trending east-northeast that crops out near hole Tr. No. 4 and which is also exposed in bulldozer trenches "C" and "D." Except for some pyritization the limestone and shale cut by the drill is not appreciably altered. Core from pebble dike and shear zones cut between 58 and 83 feet contains pyritohedral pyrite, galena and sphalerite as does core from a zone close to the fault. The sedimentary rocks are cut by monzonite and pebble dikes and a monzonite sill. Silicified fissure zones in the shale at 236 feet and 292 feet contain scattered crystals of barite, galena, and sphalerite.

Hole Tr. No. 6 is 459 feet deep and is at coordinates 24,961 N., and 22,028 E. It was drilled with a tri-cone rock-bit to a depth of 455 feet and only the bottom 4 feet was cored. The hole was intended to determine the location of the Teutonic fault beneath the capping volcanic rocks and to explore the section of limestone in the north (hanging wall) block. Unfortunately, however, when the hole penetrated the sedimentary section, it proved to be in the footwall block of the fault. The contact of bleached and pyritized tuffs with similarly bleached and pyritized shale of the lower member of the Ophir forma­ tion was cut at 302 feet. The laKer Ophir carbonate marker bed was penetrated between 419 and 430 feet and the Tintic quartzite(?) was entered, probably across a low angle fault at 456 feet. Fragments of sphalerite and galena and minor amounts of chalcopyrite were con­ centrated in a gold pan from the drill cuttings from the entire length of the hole; this material is ascribed chiefly to steep, silicified fissure and pebble dike zones cut by the drill in the upper 300 feet of the hole. The average geothermal gradient in hole Tr. No. 6 is approximately 3°F. per 100 feet and the temperature at 400 feet is 63°F.

Drill hole Tr. No. 7 at grid coordinates 25,175 N., 21,992 E. was lost at 554 feet. It was located 217 feet N. 9 1/2° W. from hole Tr. No. 6, a distance and direction that would assure its being placed on the hanging wall side of the concealed Teutonic fault, and with the hope that it would intersect in limestone the steeply west-dipping mineralized fractures cut in the upper part of the hole Tr. No. 6. The hole was drilled with a tri-cone, rock-bit to 522 feet, and was then drilled with a diamond core-bit to 554 feet, the depth at which the hole had to be abandoned because of drilling difficulties. Highly altered, sanded and mineralized dolomite was present between 530 and 554 feet, suggesting that the hole was in the hanging wall of the fault as planned. The lava cap was demonstrated to be 519 feet thick, and a pre-lava rubble and talus zone 11 feet thick was cut between the extrusive and sedimentary rocks. Somewhat less sphalerite and galena was observed in the cuttings from hole Tr. No. 7 than Tr. No. 6, but fragments of these minerals were common especially between the intervals 40 to 115 feet and 460 to 522 feet in the section of volcanic rocks. The altered dolomite from a short distance below the rubble contact to the bottom of the hole contained an average of 2200 ppm Zn, and 900 ppm Pb in the core and sludge; normal unmineralized dolomite commonly contains 70 ppm Zn or less, and 30 ppm Pb or less. The geothermal gradient in hole Tr. No. 7 averages 2.2°F. per 100 feet and the wall rock temperature at 530 feet is 63.9°Y- (See p. 34.)

Drill hole Tr. No. 71was located only 28 feet northwest of Tr. No. 7 at grid coordinates 25,198 N., 21,975 E. and was drilled to a total depth of 915 feet. It penetrated the base of the pyritized and locally silicified rocks of the Packard quartz latite volcanic series at 568.5 feet and entered sanded hy­ drothermal dolomite at 572.5 feet, the 4-foot interval between the volcanic rocks and the sedimentary rocks being occupied by pre-lava rubble and clay. Because of the high degree of alteration of the sedimentary rocks, no marker beds were recognized with certainty above the Tintic quartzite. The drill penetrated dolomitized, sanded, and locally jasperoidized beds which are be­ lieved to be altered Teutonic limestone between 572.5 feet and 770 feet, and pyritized, argillized and locally silicified shale between 770 and 855 feet, probably the upper member of the Ophir formation. At 86o feet the drill hole entered the Tintic quartzite across a fault and was bottomed in quartzite at 945 feet. Several altered pebble dikes were cut between 674 and 84o feet. The presence of a fault between the shale and quartzite is confirmed by the brecciated character of the lower part of the shale section, a zone of soft gouge(?) at the zone of faulting between 855 and 86o feet, the absence of brown sandstones in the shales near the quartzite contact and the absence also of coarse micaceous shales that characterize the uppermost part of the Tintic quartzite. Healed quartzite breccia cored from a zone 15 feet thick below the fault was seamed by narrow veinlets composed of galena, pyrite, barite, and terminated quartz crystals; splits of the core taken between 86o and 865 feet assayed one to two percent lead. Traces of sphalerite and galena were also noted between 250 and 270 feet, 440 and 470 feet, 565 and 672 feet, 835 and 850 feet, and sporadically in other zones. The average geothermal gradient in hole Tr. No. 7a is 2.16°F. per 100 feet and the wall rock temperature at 80o feet is 70.25°F.

Drill hole Tr. No. 8 is 230 feet northwest of No. 7a and was drilled to explore the sedimentary rocks along the northward projection of the west­ ermost hydrothermally altered fissure zone in the Trixie area; its coordin­ ates are 25,389 N., 21847 E. It was terminated at a depth of 805 feet when the funds appropriated for drilling were exhausted. The base of pyritized, argillized and locally silicified and calcitized volcanic rocks was cut at 645 feet; the sedimentary section below the lava is essentially all sanded, hydrothermal dolomite with the exception of a zone of sandy or quartzitic shale between 675 and 692 feet that may correspond to the shale member of the Herkimer limestone or a shale band in the Ophir formation. The latter interpretation would assume a fault with younger beds below the break, and the other interpretation assumes a change in lithologic character for the Herkimer shale not observed in the East Tintic district, but typical of the Herkimer shale zone a few miles to the southeast. Owing to the intensity of hydrothermal and supergene alteration, precise identification of the strati­ graphic units is not possible. No ore minerals were recognized in the dolo­ mite but highly sanded and iron stained material close to the contact of the sedimentary and volcanic rocks gave strong positive geochemical tests for zinc and lead. Minor quantities of sphalerite and galena were noted in the drill cuttings from the intervals 120 to 140 feet, 260 to 265 feet, 305 to 32,) feet, 330 to 335 feet, 360 to 430 feet, and in other zones in the volcanic rocks. The geothermal gradient in hole Tr. No. 8 is somewhat less than the gradient in holes Tr. No. 6, Tr. No. 7, and Tr. No. 7a, averaging 1.7 F. per 100 feet; the temperature at 800 feet is 65.7 F. as compared to a wall rock temperature of 70.25°F. at a depth of 800 feet in hole Tr. No. 7a. The increased temperature in the Tr. No. 7a hole is probably attributable to the proximity of the Tintic quartzite to the point where the temperature readings were made but may also be due to a greater abundance of oxidizing sulfide minerals near the Tr. No. 7a hole.

CONCLUSIONS Information obtained from the geological and geocheical investigation shows that: 1) The surface geochemical anomalies persist and appear to gain strength in depth; they also appear to be chiefly associated with the north-northeasterly-trending pebble dikes and fissures. 2) The volcanic rocks are relatively thin and should offer no deterrent to exploration and mine development; they also show favor­ able late stage alteration and contain disseminations of ore stage minerals. 3) A reasonably thick section of carbonate rock—Imuch of it h7Arothermal dolomite--is present between the volcanic rocks and Tintic quart­ zite. The dolomite shows favorable late stage alteration and locally contains small concentrations of lead, zinc, copper, and silver minerals. 4) Although the position of the faulted extension of the Teutonic fault was not conclusively determined, its general position is appar­ ently fixed by the Trixie No. 7a drill hole. 5) Altered and mineralized ground of a type associated elsewhere with commercial ore bodies was cut in the Tr. No. 7a drill hole. 6) Additional drilling or underground exploration is needed to adequately explore the area for concealed ore bodies.

BIBLIOGRAPHY Cook, Tenneth L, 1947, A gravimetric survey in the East Tintic mining district, Utah: U. S. Geological Survey file report. '2. Kildale, M. B., 1938, Structure and ore deposits of the Tintic district, Utah: unpublished Doctorate thesis available in the library of Leland Stanford University. 3. Lindgren, Waldemar, and Loughlin, G. F., 1919, Geology and ore deposits of the Tintic mining district, Utah: U. S. Geological Survey Prof. Paper 107. 4. Lovering, T. S., et al. (1949), Rock alteration as a guide to ore -- East Tintic district, Utah: Economic Geology Monograph I. 5. Mineral Yearbooks, U. S. Bureau of Mines.

HOLE: Tr. No. 1 Location: Tnclination: Total depth: Core Footage recovery From To (percent) NC* NC NC NC NC NC *NC not cored ;.6.AL APPEPE Detailed logs of drill holes 24,963 N., 21,910 E. 90° (vertical) 300 feet Description Unconsolidated alluvium Latite porphyry; oxidized, pyritized. Latite porphyry; pyritized; barite, pyritohedral pyrite, sphalerite and galena fragments in cuttings. Latite lithic and crystal tuff; pyritiz­ ed and argillized; octohedral and pyrito­ hedral pyrite in fractures between 70 and 125 feet, galena with pyrite and barite in vug at 118 feet, pyritohedral pyrite and sphalerite in vugs and seams between 125 and 132 feet. Clay gouge; pyritized and partly silici­ fied. Latite lithic and crystal tuff; pyritized and argillized. Latite lithic and crystal tuff; pyritized and argillized. Latite lithic and crystal tuff; pyritized and argillized; fragments of galena in cut­ tings from interval between 205 and 215 feet. Latite and quartz latite lithic and crys­ tal tuff; pyritized and argillized. Latite and quartz latite lithic and crys­ tal tuff; pyritized and argillized. Latite and quartz latite lithic and crys­ tal tuff; pyritized and argillized. Latite and quartz latite lithic and crys­ tal tuff; pyritized and argillized; frag­ ments of galena in cuttings from intervals between 260 and 275 feet and 280 and 285 feet. Quartz latite lithic and crystal tuff; pyritized and argillized; fragments of Tintic quartzite abundant in last 12 inches of core. Formation or rock unit Laguna Springs latite volcanic series. Packard quartz latite volcanic series; exact line of contact obscured by hy­ drothermal al­ teration and may be higher in hole than 215 feet.

Hole: Tr. No. 2 Location: 24,969 N., 21,941 E. Inclination: 90° (vertical) Total depth: 55 feet Core Footage recovery Prom To (percent) NC Description Unconsolidated alluvium Tatite porphyry; oxidized and pyritized. Latite porphyry; pyritized, argillized and locally seamed with minute veinlets of quartz; pyritohedral pyrite in cuttings from interval between 25 and 55 feet, sphalerite and galena in cuttings from in­ terval between 30 and 40 feet, and galena in cuttings from interval between 50 and 55 feet. Formation of rock unit Laguna Springs latite volcanic series.

Footage Prom To [)5 8o Hole: Tr. No. 3 Location: Tnclination: Total depth: Core recovery (percent) 24,795 N., 22,004 E. 90° (vertical) 80 feet Formation Description or rock unit Unconsolidated overburden Latite tuff, iron stained and cut by Laguna Springs veinlets of caliche. latite volcanic series. Limestone; light gray, medium grained; Teutonic limemanganese oxides and yellow-brown iron stones oxides on fractures. Limestone; chocolate brown, sanded; cut by fractures that contain crystals of clear and milky white quartz, white clay, and iron manganese oxides. Limestone; dark gray, medium grained; cut by veinlets of white dolomite. Dolomitic limestone; light gray, medium grained. Limestone; dark gray, medium grained; cut by veinlets of white dolomite; clear quartz and pyrite fill small fractures between 73 and feet.

Footage From To 8o Hole: Tr. No. 4 Location: 24,889 N., 21,918 E. Inclination: 90° (vertical) Total depth: 105 feet Core recovery (percent) Description WIMMO Unconsolidated alluvium Latite porphyry; oxidized, pyritized. T.tite porphyry and tuffs; pyritized and argillized; tuffs include some frag­ ments of Tintic quartz; sphalerite in cut­ tings from interval between 60 and 65 feet. NC Latite tuffs; pyritized and argillized. Formation or rock unit Laguna Springs latite volcanic series. 4o

Hole: Tr. No. 5 Location: 24,952 N., 21,936 E. Tnclination: 66° Bearing: Due South. Total length: 313 feet Core Footage recovery Formation From to (percent) Description or rock unit Unconsolidated alluvium. NC Latite porphyry; oxidized, pyritized. Laguna Springs latite volcanic series. Latite porphyry; oxidized, pyritized. Latite lithic and crystal latite tuff; pyritized and argillized; texture ranges from fine grained to coarse grained-fragmental; pyritohedral pyrite, galena and sphalerite in seams and vugs between 58 and 63 feet, 67 and 83 feet, and at 156 feet. Lb Fault gouge and brecciated, silicified tuff. Shale; tan and gray; pyritized. Middle limestor Limestone; fine grained, gray; pyritized. member of Ophix Shale with interlayered thin beds of blueformation. gray limestone; pyritized; bedding planes make angle of 55° with edge of core. Limestone; gray to tan, fine grained; quartz and pyrite crystals in fracture at 198 feet. n2 Shale; grayish tan; somewhat brecciated; pyritized. a3 Limestone with shale partings; gray to tan, fine grained; pyritized. a5 Interbedded shale and limestone pyritized. (c.?20 Limestone; tan to gray, fine grained; pyritized.

IT. No. 5 (continued) Core Footage recovery From To (percent) 22') 247.5 249.2 Description Shale; gray to tan, fine grained; pyritized. Monzonite (dike); light gray; pyritized and argillized. Shale; gray, fine grained; pyritized; bed­ ding planes make angle of 6o° with edge of core; breccia zone with scattered crystals of quartz, pyrite and galena at 236 feet. Shale; tan, fine grained; pyritized. Pebble dike; pebbles all Tintic quartzite; fills fracture zone that cuts core at an angle of 25°. Shale; banded tan and gray-green, banding cuts core at angle of 60°; pyritized; breccia zone at 269 feet cuts core at angle of 40'; sphalerite and barite crystals in veinlets be­ tween 291 and 292 feet. Monzonite (sill), porphyrytic; purple to dark gray; ferromagnesium minerals altered to pyrite and clay, feldspars mostly unaltered. Shale; tan to gray green, banded; pyritized; cut by veinlets of calcite and late pyrite.. Formation or rock unit Lower shale member of Ophir formation.

Hole: Tr. No. 6 Location: 24,961 N., 22,028 E. Inclination: 90° Total depth: 459 feet. Footage 'rom o to -.5p5 Core recovery (percent) NC NC NC NC NC NC NC NC NC NC Description Unconsolidated alluvium Latite porphyry; oxidized, pyritized. Latite lithic and crystal tuff; gray; pyrit­ ized, argillized and weakly chloritized; cut by many hair-like veinlets of quartz; frag­ ments of galena, sphalerite and pyritohedral pyrite common in cuttings from interval between 140 and 198 feet. Pebble dike; quartzite pebbles. Latite lithic and crystal tuff; fragments of sphalerite and galena common in cuttings. Pebble dike, quartzite pebbles. Latite or quartz latite tuff; quartzite frag­ ments appear at 295 and increase in amount downward to 325 feet; zone of silicified tuffs between 260 feet and 270 feet; galena, sphal­ erite and pyritohedral pyrite noted in cuttings from each 5-foot sampling run ranging in amount from sparse to abundant. Shale and rubble (pre-lava soil and talus horizon); oxidized and pyritized. Shale; gray green, fine grained; pyritized; traces of sphalerite and galena in cuttings from interval between 345 and 410 feet and scattered fragments of black jasperoid in cut­ tings from interval between 400 and 405 feet. Limestone; light gray, fine grained; stained with hematite; moderate amount of galena and sphalerite in cuttings. Limestone; gray, medium to fine grained; galena and sphalerite in cuttings. Shale and quartzite; pyritized; shale mica­ ceous, medium to coarse grained; fragments of galena, sphalerite pyritohedral pyrite and and clear quartz abundant in cuttings; sphal­ erite ranges in color from amber to dark brown. Fault possibly concealed in this interval. Formation or rock unit Laguna Springs latite volcanic series. Packard quartz latite volcanic series. (Exact contact not known owing to intense hydrothermal al­ teration.) Lower shale member of Ophir formation Carbonate marker bed of lower shale member of Ophir formation. Lower shale member of Ophir formation.

Tr. No. 6 (continued) Core Footage Recovery Formation From to (percent) Description or rock unit Shaly quartzite and sandy shale; gray green; pyritized. Sandy shale with interlayered thin beds of Tintic quartpink and tap quartzite similar to Tintic quart­

zite; pyritized; bedding makes angle of 35° with edge of core; no ore minerals noted.

Description Latite porphyry; oxidized, pyritized. Latite porphyry and lithic and crystal latite tuff; (actual contact not known owing to strong hydrothermal alteration); gray; pyritized, and argillized; local lenses of quartzite fragments; traces of galena, light and dark colored sphalerite and pyritohedral pyrite in cuttings at 37.5 feet, and from in­ tervals between 75 and 8o feet and 95 and 100 feet. Latite aild quartz latite, lithic and crystal tuff; pyritized, argillized, calcitized locally silicified; fragments of galena in cuttings from interval between 110 and 115 feet; sphal­ erite and barite in cuttings from interval be­ tween 145 and 155 feet and sphalerite, galena and pyritohedral pyrite in cuttings from in­ terval between 165 and 180 feet. Quartz latite tuff, pyritized, argillized; fragments of sphalerite in cuttings from in­ tervals between 210 and 220 feet, 225 and 230 feet, 2i-0 and 245 feet, 255 and 265 feet, 280 and 285 feet and with galena from interval be­ tween 285 and 305 feet. Quartz latite tuff; pyritized, argillized, calcitized and locally silicified; traces of amber sphalerite in cuttings from intervals between 315 and 325 feet, and 355 and 357 feet. Pebble dike with fragments of shale and quartzite; strongly silicified. Quartz latite tuff; pyritized, argillized, calcitized and locally silicified; scattered fragments of galena in cuttings from interval between 370 and 375 feet, fragments of sphal­ erite from intervals between 425 and 435 feet, and 465 and 480 feet. Weak chlorititic alter­ ation between 460 and 480 feet. Formation or rock unit Laguna Springs latite volcanic series. Laguna Springs latite volcanic series and Packard quartz latite volcanic series; precise contact not known. Footage From to 33 loo Hole: Tr. No. 7 Location: 25,175 N., 21,992 E. Inclination: 90° (vertical) Total depth: 554 feet Core recovery (percent) NC NC NC NC NC NC

Tr. o. Footags Core From to rec;)very ,ration 40ereent De.vcription rock unit e MC Bubble zone at base of lava; composed of ar­ 522 ,illized and pyritized tuff with lenses of ahale id quartzite chips.; i_Tades downward intc old soil zone; pyritized dnd locally weekly mineralized with erlte and ,...Alena. Cored between 52Z and 5300 recovery 33.3 percent. Dolomite; Chocolate brown, medium to coarse Teutonic limesanded, vu4zy. lowermost 12 inches la a stonekt) hydrcd­ jaaperoid breccia. thermal dolo­ mite) 539 zY-J. Dolomite; chocolate brown, landed. 5414 V.) Cuttings indicate brewn sanded dolomite. 549 55k CuttiniA indicate brow./ sanded dolomite, -ray jaspercid and 6my and white clay. Hole lost in cavin6 6round at 554 feet. k6

Mole: Tr. 'a Locatiou: 25,198 B., 21,975 S. InelinrAtton: 9n' 'vertical) Total depth: 945 feet Cro* Footase recovery From To roeLt . Desert i fic Latite porphyry; oxidized, pyritized. 27.5 299. Latite and quartz Latite lithic-crystal uff; pyritized, arEillized, calcitized and cosily silicified: sphalerite noted in cutInes from intervals between 60 and 80 feet, 0, and 115 feet; 125 and 145 feet; with Alen& from intervals between and 170 et; 200 and 205 feet; 220 and 225 feet; and 260 feet; 260 and 265 feet; avd 294 299 feet. Jasperoid; nett rsry, vu :,y; mineralized th scattered crystals of &alma, evtalerite pyrite. Quartz latite tuff; pyritized, argillized, citized mud locally silicified; scattered rwznents of ;;.5,1ens„ sphalerite, pyritohedral yrite and clear quartz noted in cuttince from intervals be twen 305 and 310 feet, 525 and )45 feet, ftemlerite alone from Interval be­ 'teem 370 end 375. NC Quartz lathe tuff with many intermixed to of quartzite amd shale; pyritized, calcitized and locally silicified; ttered fracmants of sphalerite, galena, tosdra1 pyrite and clear quartz in outings from intervals between 380 and 390 feet, 05 and 410 feet, 420 nnd 430 feet, aDd UA 470 feet. 527 565.8 quartz latite crystal tuff; oxidized, pyritized and locally silicified. 565.8 572.5' 100.0 Clay or gauge with intermixed fraonsmas of uartzlte und shale (my represent per e-lema it and -butts); pyritized and partly silicif ted; galena, sphalerlte and pyritchedral yrite eirretels line vugs and small open cracks. Forma rock unit ursa. atite volcanic ries and quartz Cite volcanic ries; precise tact obscured strong hydr...)- hernial alters..

Nola: Tr. No. Ta t.continued) eOre Footage Recovery rrom 'Ito 'percent) 572.5 634 664 672.5 672.5 703. 703 717.5 717.5 741 751 756 10.0 765 770.5 13.6 770.5 796 50.!7' 808.5 45.3 806.5 813 3h.1 86o 863 863 869 61.1 Description Dolomite, chocolate brown, sanded, vu6gy, cut by narrow veina of jasperad and pink and white dolomite; stained red and yellow brown by hematite, limonite mad jarosite; much gypsum, especially at top of SOM. Dolomite and limestone, light and dark xay mttled, medium to coarse grained, party sanded; cut by narrow veinlets of calcite and dolomite. o core, no cuttings. Gouge, dark gray, partly silicified and brecelated associated with pebble dike zone; quartzite pebbles most abundant between 674 and 676 feet, and 678 and 683 feet; pyritized; gypsum crystals abundant in silicified zones. No core, ne„ cuttings. Dolomite, tan to dark urv, sanded; calcite veinlets ccAmon. No core, no cuttings; gouge(?). Pebble dike; silicified. Dolomite; dark „;ray, cut by may veinlets of white dolomite and calcite. Pebble dike; silicified. No core, no cuttings. Limy dolomite; dark gray, brecci*ted. Gouge and crushed shale; light ti;, dark iLray, banding makes angle of 400 with efi4e of core: cubic pyrite abundant. :74111.1.; gray, fine grained; pyritized and locally silicified; bedding mass eagle of 60* with ed4.;e of core. Nbazonite sill or dike.); light gray; pyritized and arBillized. Shale; grays somewhetbrecciated; pyritized. Gouge; dark pithy; locally silicified; pyritized. Shale; gray; brecciated; scattered crystals (sf brown sphalerite; cubic and pyritobedrul pyrite abundant. No core, no cuttings; fault zone. Nreccinted quartzite and shale. Quartzite; brecciated, silicified And maneralized; breccia fragments encrusted with terminated crystals of clear quartz and crystals of pyritonedral pyrite, barite, kAlena, Pertion or rack unit Teutonic lime­ stone(?) 0N0240­ thermal dolomite) shale of Ophir formation. is quartzitet

Hole: Tr. No. 7a (continued) Core Footage recovery Formation rom To (percent) Description or rock unit and sphalerite; sulfide minerals partly oxi­ dized; gypsum abundant in oxidized material. ;69 Quartzite; light gray to tan; pyritized; gypsum, sericite and pyrite coat fractures; at 886.9 a silicified veinlet l/4 inch wide cuts core at an angle of 65°; bedding makes angle of 55° with edge of core; pyrite and gypsum common to bottom of hole.

Hole: Tr. No. 8 Location: 25,389 N., 21,847 E. Inclination: 90° (vertical) Total depth: 805 feet. Core Footage recovery From To (percent) NC NC NC A 125 NC NC NC NC 476.5 502 ()2.7 504.5 505 O3 604 -,04 Description Unconsolidated colluvium. Latite porphyry; oxidized, pyritized. Latite porphyry; pyritized, argillized and weakly silicified. Quartz latite porphyry; pyritized, argillized and weakly silicified. Quartz latite tuff; pyritized, argillized and weakly silicified. Quartz latite porphyry or tuff; pyritized, argillized and silicified; a few crystals of amber sphalerite in cuttings from interval be­ tween 150 and 155 feet, and scattered crystals of galena and sphalerite in cuttings from in­ terval between 230 and 240 feet. Quartz latite porphyry; pyritized, strongly argillized, weakly to moderately silicified and weakly to strongly calcitized. . Quartz latite tuff; gray to tan, fine grain­ ed, dense; pyritized, calcitized and argillized, scattered crystals of galena and sphalerite not­ ed, especially in cuttings from interval be­ tween 400 and 430 feet. Quartz latite tuff, strongly silicified; pyritized; bedding(?) makes angle of 40° to 50° with edge of core. Quartz latite tuff; light gray, dense. Pebble dike Y silicified. Quartz latite tuff, banded gray and tan, dense; banding makes angle of 45° with edge of core. Quartz latite tuff; light gray, silicified, pyritized; locally brecciated and may include a pebble dike between 584 and 589 feet. Pebble dike; silicified; cuts core at angle of 60°. Gouge; tan to gray; iron stained. Open space. Formation or rock unit Laguna Springs latite volcanic Packard quartz latite volcanic series.

Viols Tr . Pooter,3e . tic !-.10 023.5 627.5 0 04o to .0 '55 65, '259

66o 51,2 ,e',74. 675 675.5 3n.0 675.5 'M 2z.8 m8 , Descripti;.= Clay or ,.;4.a.., , taa to zraY; stained . !hematite and limmite. Open space. Clow; mottled white, dark Urvien, -4.nk znd leek; manzauese .:widen present. Quartz latite tuff: gray; iwft. '4,1.1.wirtz latite tuff; yellow lzroliet, decca,-,543 W.' c:',.re. lb D-;lomito; pinkish Tray, str::casT,Iy sanded; by ftne veto of calcite. Jas Ad; may, vtvegy; some vuot c-,ae.td th jarosite. Dolomite; Iray, cut by a network af pills white calcite veinlets; partly baudad; ; 'din6A makes adele cf 50° with e4e of :,re. Clay iipuzc ton end gray. JasperoiC vuuiy, brown;, coated with linov­ te and jamsito. Predominantly ligUt gray shale with tmWr­ srered 2 inert Wide of 11.4at brown quartzite: makes angle of 25 with edge of c.,..re. Dolomdte, pink, sanded. No core. do1amite, Era y, mai= grained. D,Aorsite dark gray wed; red calcite Jo sore. Clay 6:armee; pertly silicified. Dolomite, pink, snarled. Jo core. Dolomite, pinkish grw, media= ,,rained 4M; 2 imt bed of tan clay at 1k2 feet. Liar dolataite; 1.t;ht losay, hard. to core. Limy &.i mite; light 4ray, sanded. or domes; yellow brow, with feint ate mottles reinAblIng pbec:.vrysts; may :present a completely argillized and sheareo "raonite dike; pyrite abundant. 51Foryst.tior unit ,per Limestone ber of lerner limestone lwdrotherm1dblomit0. haliz molaber ,..f erkimer limit,ne:). limemember of orkimer lino­ ermal dolomite)

N-le; Tr. Mo. 8 ,evntinned) FQotaLe I recovery Prom To t 79" F:amatioc. or neck unit & core, Vo cc/re e.xcept for a fey fra4mmais , kxay !)111 liacmate and yallow clay. Dolomite; 1..kly; alteraWawitamis 0waded dolorite and :awe., fresh dolomite; unimmied dol- ;:mite mottled, cut by time vertu:Lets of is calcite, some features coated with fine crystele of spm.i.larkommtite.

:_analytical data, drill outtin,4 tod drill corm In 7-urts per Hole: Tr. L. 1

than) Drill cutting Sample interval Sample interval 1Dapth in feet Cr 'Aead Z4 Depth in cret Criwnr Lead 7ine ramie collar of Inn) ftua eollar t mo0 ppm) ?pa) hole) Q4. .10 7O 75 1, ft- 35 OD- 25 4o is 1,1#1,0 ' +.

250 L.,000 5)) 1') Zn00 Itt)

7,0 1.32.5-140 15o 7,0 18o-L85 5 55- 6o llo 1,85-190 5 ID° '-5 50 30, 2,00-20r) 1, 5 5r 'op 5 lop 8o- 85 e5

grill ,..-;17ttl.n.,:v W.r ct p t.. n.git: multiply by .0W, lItterTs1.. 10,003 ppit 1.00' Derlth in ft 4.xte trim collar of 97Am, 11111) 10 G40C1 bole) 9,.100 *For conversion at s4m. ;sliver/ UV-101 ;lances vex tot: wiltiply ppm. Vy

rauGh4, by 0.%). LO!5.110 14) :5 1,5-140 170-17'; 2) 2%) 190019,

Hole: Tr. 14,-.). 1 curt.) Drill cattle C3amp1e interval ;Depth in feet lower 'Lead from collar of .ppla) poll0 isle 20 , Zinc ,prism) 2, a, 21ria I) ,J :50 1, 245-2,00 250M 2P, 1 0o 27o-275 ,, 50 , aa) 25o loo

Ificae: Tr. lo. 2 Drill cuttings Drill cc:re , Searle interval' r,10 izterral i.Depth t feet !Copper 140.411. 'Zinc Depth in feet 1 Copper inc.) 4ead f frortcol r'plat) ,iga) hole) hole) 5o 1tn no ..4.1111 or m.* TrA 3',3 20t' 500 i 150

rfAlle: Tr . X°. 3 priu. cuttings Sample intorrat ,Depth in flat try collar of , mis) ,e ppot) hole' lo. 15 2,- 30 2' r 2Q 510. 55 64o. 65 2,; 5 mis) 7,0 Iwoo 2,0

eac loo 12, Sample interval -Depth in feet frica collar of hole) 35d. 45 4,- 55 5- 2,0 =5- 66 c;4re ad Pfal ) ?Pm) .15 5 11.10G 15 "5 300 15 . 5 1 75 : 1, T) r

Mae: Tr. IN:. 4. trial cutter.z c-ore Sumpie interval 9,DeimM in feet) from collar of hole) ppar Leud Zinc (pre) qn3s) p) Sample interval 011eyth in feet from collar of ,hole) opper ;ppm) Lead -,qam) lac ppm) lo-ao 15- a z5- 30 1.; 1:, .., 35- 4o 55-O5 4o- 45 r-:5-70 !X; 5 ,o- 55

6O- 65 65- 'to

5 25o 5

25 la) 35 250 95-1oo 35 300 1h-1C4 35 15o

plc Tr. f . Drill clzttings Drill. core interval T-Tavie ixiterval i tbepth in feet opper lead Zint .,Depth in feet oiriAr i Lead 7Jac from e,-.)1.1ar or hole) ::inzt) iNeal) — 1 lo cellar or bole) ,No) I (ppn) (ppm) 4o- 44 2o -: .Lo IA. 49 M # 100 LO lt0- 44 54- ''.Y) '

6o 5oo t MO .7; C;15- 70 /20 To- 75 t ,:: s '.) 2oo Icy) 8o- 85 ,

lo 96-1o2 no 12s­io To -2.or 2o ioo 93- .1,7e, lo 107-1n 8o t 12K' , 200 '10 /CO if is 10

Oct. off oe oL OT oe o41 cyr oot O 1 oc oe OOT oa oa OT OT OT OT 01:,1 OT OT )1 (yr oc 1 c 00 0T at. oT Or; oe OT Oi OT a aTaq JD 4111TI00 1.0n 7T 1.T ( Jc' ziriToo tiriaj Todaa l'Efraa TuAJG4uT at 0.17.40rn.ta =1'3 1w ITTAa ('4110 ) solt '4J, :KPH

Role: 1'r. Ao. 5 cort.) Drill core 0Depth in feet nroim collar of 2o2-2may 2o7-2/1 213-21) 2PC-225 22')-2.50 23o-256 237-238.5 58.5 -242 242.247.6 OV7.6-244 ?.49.2-252 net ) Zinc

Awl) 10 8o :0 <10 2o lo 10 ro <10 10 10

Hole: Tr. No. 5 (cont.) Drill core Sample interval (Depth in feet Copper Lead Zinc from collar of (ppm) (ppm) (ppm) hole) 10 4o lo lo 10 10 8o 10 10 10 8o

Hole: Tr. No. 6 Drill cuttings Drill core -.­:_e interval , t.ri in feet Copper Lead Zinc : collar of (ppm) (ppm) (ppm) , ­, 40 ?- 15 '- 50 10 — 55 lo :)5- 60 10 ,;( 7o 75- So 5o 8o 3o 3o TO TO :25-130 LO Sample interval (Depth in feet from collar of hole ) Copper (ppm) Lead (ppm) Zinc (ppm)

04F

CID41 00 , (f;t3 Ca og,C ca OCK 001!; OcC 000T j 000T ooL ook 0o) oo9 000T 00g 000Z 0001 000Z 004T 000ZI 0001 OC (uwki) (iNIC 3XT7 pawl oe.: OZ OT OZ OZ OT CT oe Oa OT OT OT a add 03Z-cIZ 07-40(, (yoz-ooe 6,1-o6T o6T-411 cgt-oeT owt-W qt-OLI OLT-5;i9T 9T-o91 0091-'gt 0T-ITT 0/t- iT T-OCT -atm( Jo =Iwo UMAJ Salk; l'AJVIUT 8luTIV1* MPG. (-411400 9 '011 'Al : GIOK

Hole: Tr. No. 6 cont.) e interval treepth in feet from collar of hole). 255, 265­ 290295 50,-310 330-33, 33,-34-0 Drill euttiniA

riper Lead, Zin c 14110 (15a) 1P172') t.'00 701) 50D in

Hole: Tr. no. 6 (cont ) Drill cuttings .Salsple interval Depth in feet from collar of hole 940-34-7­ 395-4or hoo-4o5 4.1.0-415 415-42o 425-43D Copper Lead Mal) 1 /4 E20 To I600 50 1 1500 'To T., 1,00 30( f:0-1

(14 sR y p!'s orN sr, trk " " tf\ ot, Itc r4 4.;

kia r le% Ir irN gR2RilitiP4R1.21 Q Q F-1 r.-4 r-4 P.4 f.4 r9 r.4 cro g tf-Nt k k 4A.d4 r4 r-, F-4

aoca gza-oze O T?, cte-0ie oc,1 cm Ore-rte cif 0?, (20a-me or. ooa-',6T ca-061 06T-QT oa 9'4 01T 09T-QI O OZ 'LT-oLt oLT-9T tG Oft OZ Oc; oe 09T-"T OT OZ c4T-(A GA. CT T OT OT girt—Or a/. OT OT OOT 0Z> ITT (4TOP (add, (MdC JO 2111TTOO UZJJ ( on Pen 1441103 14a.; LIT 414e41) atifaavi„ eeuT1V10 ITTAa (-4.1700 L .A1

'Rolf.: Tr. No. 7 (cont.) Drill cuttiaJA Sample interval ;Depth in feet Copper Lead Zinc tram collar of ppm) (ppm) t,gpm) hole) TO ao 3oc T: .)0 /0 ::ic 4o 28,-290 lo lio 4c# )40 r: 325-3,0 it% r." 4ri 4110111.,

Bole: Tr. No. 7 (cont.) Drill cuttin,z inters. ',Depth in feet r Lead:Inc frau collar of 774m) Ina) ) hotel 2C, 20 I TO 395-4,00 (0

Hole: Tr. No. 7 (cont.) Drill cuttings Sample interval Mirth in feet Copper Lead Zinc from collar of bole) 0,-510 53o-535 'ppm) qmpla) i 43P110 1, .l0 60 90 10 10 100 200 20 200 1000

8RR R8SRE?.4 giciikceRS§All 4kRR Rik RiZ CM ggiiiiS2R$ 2 :Si ',/ kr\ I /1 t aiff F tr (1

C: :74

it\ t' P4 CR.-Mcia§i 8 g 2 8 ail8,9,2.9R2SRS5?3 F,SR R9 S200000 000oct 24000 ri el el r-4 r."4 ri fel e-I V V V V V V V V V V V V 6N 'S 3 1..;' 4 g (11)` & § :4:f4 kk k c) a !4 ,§ g IA

Hole: Tr. o. 7 cont.) Drila auttim- s Drill core r' 1e interval le terval Zelloth in feet o;per Lead ODelyth in. feet 1 7per ilver from collar of Ompm) mitt) from collar or ppm) W) hole 10 10 145-15o 155.1;4 lo 175-18o 180.18!) 18,5-190 200-20'5 lo 8o salmPle.' t 1X) 6o 8o 8o 4o hole 6o4-6o5 614-617.5 11,7.6-619 ' 3 654-656.5 %.5-659 664-672.5 72.5-673.5 10 20 1750 20 5olo 4y ieINDO 8o strip. ltd le.

&Ile Tr. No. "fa cont.) Drill cuttinza thrill c,)rJa A Zcaple interval i (Depth in feet or Izad !Zinc Depth in feet Copycr Lead Zinc AULIvuir collar of Amp) (ppl) ppm from collar at from collar of I ompl) (ppm Uvm) ,Rpe) mpm) flaps) ppm) aisle) 673.5-674 <42 /70 „.74-675 754) <.2 ‹. 10 <.2 240-24, 10 6.0a-683 <.2 <10 Icoo 8o 2,0-255 e 10 al e'.2 25Y-260 4: 10 <.2 <10 ;)98-703 <10 717.5-725 3o4) (.2 to hoo <10 ko . 50 <.2 .: 10 <.2 T35-741 10 <.2 285.49() 10 <.2 290-29'5 10 /514% 2%) <.2 10 7,6462 ‹.2 <10 YN ,k) <10 <.2 31,-320 10 4o Y I%

Hole Tr. No. 7a 'cort.) Drill cutter4Ls Drill core interval .Depth in feet Copper Loan collar of plia) hole) :Lead Atte t.ppa) (pre) Semple interval (Depth In feet from collar of hole) Copper qvga) Lead (Pin Zinc eilver 490 t17111a) 10 10 ID <.2 799-8ol 4 lo 10 lo <.2 10 803..8110 36o-365 <10 8o 375-58o 10 825.8z5 10 10(: 10 10 a4o-S4,; 395-40o 10 845.85o <.2 4op.405 10 )0 <.2 10 86o-865 0,000 4/o.41, 10 415-42o <10 10 87h-877 4o 2,3 <.2

Hole Tr. rk. 7a cont.) Drill cuttings Drill core `I ?1e iate . , Depth to fctet from cellar of hole) opper , ppa) Ppm) rime ) ,Depth to feet from collar of hole' Comer ;ppm) Lead (ppm) Zinc pp) 41...w:I' ppm) 430-43, r- 10 10 10 ‹.2 889-09h 10 TO 20r) to 3CX) .it, e".2 10 e.2 10 10 10 10 10 7i7) <.2 10 <.2 510-51, 10 10

10 10

Mole: Tr. No. 7a eon.t..) Drill cuttings Sample inte Depth in feet fran collar of hole) 537-%w 360.5q

'76-581 581.58, 58!54.590 8,.860 8,6o-865 874-eirr 8/7-882 Copper ppm) 16...0,401.. )c

-too 4,o Lead I Zinc alver ?pm) qpIpm) lo o °° ''; 50G1 moo 5oo hoc , 1250 hoo TOO 2

Hole: Tr. Bo. 7a cont.) Drill clittlx); Depth ft ezlel Copper Lea4 ..iver frau collar o4 '774) ::21014) 'R04) :d7Pm)

7a,1

20r 89'9.-404

4r) 50( ‹.2 '209-914 <.2 914-9/8 2 a 7*. 1' a a ilif 922.92, 125d s#1,

81, Z' oT oi. GaT-Oet Z'> Ott TI es> OT OZ cir-OTT es oTT-401

OT OT 1-$01-00T +f CC, Oa o0T-.C6 OT oa oL OT OT OT Of g -Og

01 -, 400 -Q. OT OZ ce OT Q. -at

OT 0; OT OT OT'" OZ 01 # OZ OT 01: 0T> C,' -OC OT OC 4,0 oT 0; OT 0C. ­(0T 01 OT oe Oa ( 4.1 -04T oT CZ i 0+f - OT a' oe Oa OT -OC o -cZ -oe aTcq ZWrI00 12101.; VIOJ UT ATIdaT VAT .41410192,2 ,%too IrTza sfiTITilo '011 'AL :aTog

Hole: TV. No, a .cmt.) 4 e14eut"W 1.,..- i A--- I1e luterve-i4 rlaivie uct Depth in feet # Clipper frau collar of .ppm) f Lead ;,ppm) Zinc1.511vr :ppm ) <.2 40 f <.2 Depth in feet from collar or hole) _,102,7a. twin; -J0 .: In 1.„ev.d 2pm Zinc 7.ilver ippm) „ppm) ) <.2 ,-' 10 2G ID <.2 140*145 j y 5o 1554.i.:0 .r 5&9-5'n 6-165' 16,-170 10 , 170.17, 'i' 'PO 10 ‹.2 4:.,P. tA3-618 , 30-632.5 )C 10 50D .-:- 10 632.5-635 195-20n 63,-640

,A0-645 100 150o ., 10 .P 6,5-660 14.-.K) 'JD 66*-66, 20 ," 10 <10 e' 10 2W-225 <.2 ::74-675 10

Bole: Tr. No. 8 cot.) Drill cuttings ere

p1e te I Liample lute Depth in feet Copper Lead 2irx i 6ilvtrtr Depth in feet ICjpper Lead Zinc Silwr fram collar of ppm) ppm) ppm ,ppm) 171**m collar of .141011sr ',Om) 2111m :4011) hole) hole 250.23, )0 675-675.5 675.5.680 PO 680-E87 Da j37..:42 5:0 ro 700-702.5 PO 260.26, <10 2'5-270 TO <.2 75D-755 295-3m 10 <10 10 ‹.2 <10 10 <10 PO <10 2r., PO 8o0.80) 2o e"..2 8o

rote: mr No. a (mmt.) interval ,Depth in feet fram collar of 360-36, 370-57, 3758o 36o-335 3?0-395 1 Q005 42,5-43o 3,.440 Drill cuttia40 ;per Lead ZiLle ilvar WEI) 'PM) PI:1110 !r.P81)

<.2 10 4o lo 10 10 :50 To

le ;20 '.4 10 IQ TO ‹.2 '.2 <10

liole; Tr. Bo. 8 !,cont.) Drill cuttings MOW0000.411.11... +W.* :- ..imple lute-yew, ; Depth in feet 1C4pper iZirle ilver ... 1re of ,pf.ta) ,.pn'il ?pan ;pi* frra col., ­ lit-t-o-455 !0 k55-460

<10 <10

410-IM 10 .4: 10 ‹.2 10 <i. ‹.2 -:- 10 z ;?0 ,f io , .2 .2r.) <10 515-5IN <10 W 550-5Y x) ` .2 '35-540

Rcle: Tr. Ao.8 .) Drill cuttings rAspie interval Depth it feet 10m par from collar of .pps) hole 5h0-541 551-,5c; 556­ .LO 560-50, '65-570 '70-575 Load (PPR) 5,0 Line %Nu I Silver

Ppik) .2

Ii ,., ,, ') 112° 111 ° 110° 109° 4 2° Box Eld Er

d Sca ,e of m1!es . 4,0 41° TOOELE M

'O (I)

q) 'M H r) ::s H Cl) 40°

f-1 r-4 . CO (I) JUA B CJ H Tmf1c ond Eost Tml/c 'O ..-l ::s

tlO +-' m/n/nq d1. ◄ .l co H ·:, CJ Q)

MILLAR D c., (1) C: s

H

39° 39° 0 C/l SE VIER 1/l S H H

.q O 'O m C: BEAVE R WAYNE (U C, U) IRO N 38° 38° KANE 37° 37° 11 4 ° 11 3 ° 112° 111° 110° INDEX MAP OF UTAH SHOWING LOCATION OF THE TINTIC AND EAST TINTIC MINING DI STRICTS Figu e I

·r-1 w U"I SAMPLES TAKEN FROM N BEDROCK POS D IN Bedrock Unconsol1date d SHALLOW PITS. deposits I,. , x Tr 8 Bedrock

Bedrock f/ -, Tr. 3 o"r ' , ' XI Q / Unconsolidated Trixie / deposits / prospect / ( GEOCHEMICAL SAMPLE SITES 1 Trump Bedrock 1 shaft

fl

POSITIVE TEST 21 TO 100 PARTS PER MILLION GU T Q POSITIVE(? ) TEST 11 TO 20 PARTS PER MILLION Cu / ( / / /

Bedrock / BAC KGROUND VALUE <10 0 10 PARTS PER MILLION CU

I"\ ' /

,,, 200 Feet H

'O H rr"j r

l '1 J r .n

Q)> H::s Cl) CO C) ·r-l Q Q r-1 Q)

Geochemical sample location map showing distribution of copper in surface rocks , Trixie area. F1gu e 3

Bedrock 25 ,500 N ,. -/ , Bedr ock ?4,500 N Bedr oc k /,,

Nj Unconsol1 doted depos1 s t

Bedrock w (\J SAMPLES TAKEN F ROM N BED ROCK E XPOSED IN SH AL LOW PITS

°Po 0 o 1-, (

' / / Tr. 3,( 0 q' - - , IQ ., Q / , Unconsol idated deposits X O / Trixie / ' prospect (' - rr "" ' 1 Trump f) GEOCHEMICAL SAMPLE SITES

Positive Test 81 To 200 Parts Per Million Pb

Pos Itive(?) Test / / 51 To 80 Parts Per Mi L Lion Pb / / / / ' ; I

Bedrock BACKGROUND VALUE / / /

<10 To 50 Parts Per Million Pb

/ 200 FE ET Geochemical sample location map showing distribution of lead in surface rocks, Trixie area . Figure 4.

M C'+-t 'O co !:) t>, Q)

M (')

f-1 C/l w / / w /" / LO

N / /

SAMPLES TAKEN FROM / / BEDROCK EXPOSED IN Bedrock / Unconsolidated SHALLOW PITS deposits cJ:>o'-g / 25 t500 N,- - ,,, , ,, o0O O '-l - 'QOOO ',, "oo o

O 0

Bedrock '-

Bedrock tooo N r) // I ,,, Tr.3/ =11r X Q Unconsolidated / Trixie / , pros ect ,, deposits / GEOCHEMICAL SAMPLE SITES

1 Trump @ Bedrock

Strong Positive Test

501 TO 1000 PARTS PER MILLION ZN 24t500 N

, -­ Positive Test

/ 51 TO 500 PARTS PER MILLION ZN ) '­ POSITIVE(?) TEST 36 TO 50 PARTS PER MILLION ZN Bedrock / / BACKGROUND VALUE / /1 <10 TO 35 PARTS PER MILLION ZN (. , 200 f-EET / / Geochemical sample location map showing distribution of zinc in surface rocks, Trixie area. Figure 5

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