Gold Quarry Mine

Site Name

Primary: Gold Quarry Mine
Secondary: Maggie Claims
Secondary: NBMG Sample Site 1560
Secondary: Deep West

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Commodity

Primary: Gold
Secondary: Silver
Tertiary: Lead
Tertiary: Zinc
Tertiary: Copper
Tertiary: Manganese
Tertiary: Nickel
Tertiary: Arsenic
Tertiary: Antimony
Tertiary: Mercury
Tertiary: Barium-Barite
Tertiary: Thallium

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Location

State: Nevada
County: Eureka
District: Maggie Creek Subdistrict; Carlin Trend

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Land Status

Not available

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Holdings

Not available

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Workings

Not available

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Ownership

Owner Name: Newmont Gold Co. (Newmont Mining Corp.)
Home Office: P.O. Box 979, Carlin, Nv 89822 .
Years: 1988 -

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Production

Year: 1936
Time Period: 1936
Material type: ORE - AU
Description: Cp_Grade: ^0.417 Opt Au, 0.882 Opt Ag

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Deposit

Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Year First Production: 1936
Discovery Year: 1925
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: L

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Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Great Basin
Physiographic Detail: Basin And Mountains

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Mineral Deposit Model

Model Name: Carbonate-hosted Au-Ag

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Orebody

Form: TABULAR

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Structure

Type: L
Description: Roberts Mountains Thrust, Good Hope Fault System, Gold Quarry Fault, Etc. Created A Pervasive Fracture System At Gold Quarry. Isoclinal Folding Of Bedding Is Common.

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Alterations

Alteration Type: L
Alteration Text: Silicification, Clay

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Rocks

Not available

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Analytical Data

Analytical Data: EARLY SHIPPED ORE AVG. .417 OZ/T AU, AND .882 OZ/T AG. SAMPLE 1560 OF UPPER PLATE JASPEROID BRECCIA CONTAINS 0.3% FE, 0.05% MG, 0.1% CA, 0.3% TI, 70PPM MN, 100 PPM AG, 20 PPM B, +5000 PPM BA, 20 PPM CR, 20 PPM CU, 20 PPM LA, 5 PPM MO, 15 PPM NI, 1500 PPM PB, 700 PPM SB, 30 PPM SN, 100 PPM SR, 200 PPM V, 70 PPM ZR. AU IS ASSOCIATED WITH AS, SB, HG, TL. A SUBORDINATE ASSOCIATION OF AG, PB, ZN, CU, NI APPEARS TO REPRESENT EARLIER MINERALIZING EVENTS

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Materials

Gangue: Barite
Gangue: Alunite
Gangue: Pyrite
Gangue: Kaolinite

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Comments

Comment (Deposit): GOLD QUARRY IS ONE OF THE LARGEST GOLD DEPOSITS IN NORTH AMERICA. IT IS COMPRISED OF TWO STACKED OREBODIES: AN UPPER STRUCTURAL STOCKWORK AND A LOWER STRATABOUND REPLACEMENT. OVERALL STRIKE OF THE MAIN (UPPER) ORE ZONE IS N45E. IT IS BOUNDED ON THE WEST BY THE GOLD QUARRY AND ON THE EAST BY THE GREY/CHALLENGER FAULT SYSTEMS. MINERALIZATION IS CONTINUOUS OVER 6000 FT. OF STRIKE. MILL GRADE ORE ZONES CROSSCUT THIS TREND ON A N-S TO NW STRIKE. THE DEEP WEST OREBODY IS A SILICA REPLACEMENT ZONE AT THE CONTACT OF FOOTWALL CARBONATE ROCKS AND HANGINGWALL SILICICLASTIC ROCKS. IT AVERAGES 250 FT. IN THICKNESS, STRIKES N20E, DIPS 30-35 SE, AND AS KNOWN STRIKE LENGTH OF 2500 FT. GOLD GRADE IS DOUBLE THAT OF THE MAIN (UPPER) ORE ZONE. THE DEEP WEST ORE ZONE IS THE DOWN DIP EXTENSION OF THE MAGGIE CREEK SOUTH ORE ZONE.

Comment (Commodity): GOLD GRAINS RANGE <0.1 TO 10.0 MICRONS IN SIZE AND USUALLY OCCUR ASSOCIATED WITH MICROFRACTURES OR DISSEMINATED IN MICROCRYSTALLINE CHERTY MATRIX. AU:AG RATIO RANGES FROM ABOUT 2:1 IN MILL GRADE ORES TO 1:3 IN LEACH GRADE ORES.

Comment (Location): OPEN PIT ADJOINS MAGGIE CREEK OPEN PIT. UTM'S TO APPROXIMATE CENTER OF OPEN PIT.; PREVIOUS QUAD DESIGNATION = SCHROEDER MOUNTAIN (1968) 1:24000

Comment (Development): THE FIRST CLAIMS STAKED IN 1925 BY A. BERNING, WHO LEASED THE PROPERTY TO CUBA CONSOLIDATED MINES COMPANY. IN 1936, CUBA CONSOLIDATED SHIPPED 60 TONS OF ORE AVERAGING 0.417 OPT AU, 0.882 OPT AG. NEWMONT CORP. ACQUIRED THE PROPERTY IN 1962 AND CONDUCTED A DRILLING PROGRAM IN 1963-64 IN THE VICINITY OF WHAT IS NOW THE NORTHERN LIMIT OF GOLD QUARRY. DRILLING WAS CENTERED SW OF THE JASPEROID OUTCROP FROM WHICH THE 60 TONS OF ORE WAS MINED. FURTHER DRILLING UNTIL 1970 DELINEATED 340,000 TONS/0.12 OPT. THE LEASE AGREEMENT WAS DISCONTINUED IN 1970 DUE TO LOW GOLD PRICES AND DISCOURAGING METALLURGICAL TESTS. THE PROPERTY WAS ACQUIRED BY ROY ASH AND CHARLES THORNTON FOR $8000.00. AFTER XRF-XRD STUDIES OF GOLD QUARRY DRILL CUTTINGS SUGGESTED POSSIBLE OPEN ENDS OF MINERALIZATION, THE CLAIMS WERE REACQUIRED IN 1972. AFTER 1979, EXPLORATION DRILLING CONTINUED EAST OF THE MAGGIE CREEK OREBODY AND SIGNIFICANT AU INTERCEPTS WERE ENCOUNTERED. BETWEEN 1979 AND 1983, 550 CONVENTIONAL CIRCULATION HOLES

Comment (Workings): HISTORIC DEVELOPMENT CONSISTED OF A 40 FT. ADIT AND OTHER SCATTERED OPEN CUTS. THE CURRENT OPERATION CONSISTS OF AN OPEN PIT MINE, TWO MILLING FACILITIES, A LEACH CRUSHING PLANT, AND THREE HEAP LEACH PADS. THE DIMENSIONS OF THE ULTIMATE PIT WILL BE 1 MILE BY 3/4 MILE IN SIZE, 1200 FT. IN DEPTH. THE TOTAL MATERIAL IN THE ULTIMATE PIT IS ESTIMATED AT 576.3 MILLION TONS WHICH REFLECTS A 1.3:1 STRIP RATIO.

Comment (Development): WERE DRILLED ON 100 FT. CENTERS TO AN AVERAGE DEPTH OF 600 FT. BULK METALLURGICAL TEST SAMPLES OF MILL GRADE AND LEACH GRADE MATERIAL WERE MINED IN 1982-83. PRE-MINING BEGAN IN LATE 1983. FIRST GOLD WAS POURED IN AUGUST 1985. ; TOTAL$: 300. DEVELOPMENT CONSISTS OF A 40-FOOT ADIT, AND OTHER SCATTERED OPEN CUTS. ; ECON.COM: THE NEW SEMI-AUTOGENOUS MILL COMPLEX CURRENTLY PROCESSES MORE THAN 28,000 STPD. IN 1989, THE GOLD QUARRY PIT WAS PRODUCING 60% OF THE TOTAL MATERIAL MINED AND 62% OF THE GOLD RECOVERED BY NEWMONT GOLD COMPANY. A TOTAL OF 300 HOURLY AND SALARIED PEOPLE ARE EMPLOYED IN THE GOLD QUARRY MINE OPERATIONS GROUP.

Comment (Geology): GOLD IS PRESENT IN A GOSSAN IN QUARTZITE AND CHERT. MANY OF THE BARITE AND BASE METAL DEPOSITS IN THE MAGGIE CREEK SUBDISTRICTS ARE ASSOCIATED WITH THE GOOD HOPE FAULT SYSTEM (E.G. NEVADA STAR MINE, RECORD #M232284). THIS FAULT SYSTEM ALSO APPEARS TO LINK GOLD QUARRY AND TUSC DEPOSITS. SENSE OF MOVEMENT ON THE GOOD HOPE FAULT SYSTEM IS NOT ESTABLISHED. NORTH OF THE INTERSECTION OF THE GOLD QUARRY AND GOOD HOPE FAULTS,, AN ENTIRE RIDGE OF SILICIFIED ROBERTS MOUNTAINS FORMATION MARKS THE MARGIN OF THE CARLIN WINDOW. THE JASPEROID REPORTEDLY CARRIES SOME GOLD. GOLD QUARRY AND MAGGIE CREEK MINES ARE UNUSUAL IN THAT ORE IS HOSTED AT LEAST IN PART BY PALEOZOIC ROCKS OF THE UPPER PLATE OF THE ROBERTS MOUNTAINS THRUST.

Comment (Deposit): BECAUSE BLAST HOLES WERE BEING DRILLED ON THE DAY OF THEIR VISIT, NBMG GEOLOGISTS WERE UNABLE TO VISIT THE ACTUAL PIT AREA IN MAY, 1982.

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References

Reference (Deposit): NBMG, 1988, THE NEVADA MINERALS INDUSTRY - 1987, NBMG SPECIAL PUBLICATION MI-1987.

Reference (Deposit): BONHAM, H.F., 1986, NBMG MAP 91.

Reference (Deposit): NBMG MINING DISTRICT FILE 116, NUMEROUS ARTICLES AND NEWS CLIPPINGS.

Reference (Deposit): SANTTI, S. AND SOLTANI, A., 1989, LARGE SCALE OPEN PIT GOLD MINING AT GOLD QUARRY, IN BHAPPU, R. AND HARDEN, R., EDS., GOLD FORUM ON TECHNOLOGY AND PRACTICES, "WORLD GOLD '89", SOCIETY FOR MINING, METALLURGY, AND EXPLORATION, INC., LITTLETON, CO, P. 147-154.

Reference (Deposit): EKBURG, C., ROTA, J., AND ARKELL, B., 1991, GEOLOGY AND MINERAL DEPOSITS OF THE MAGGIE CREEK SUBDISTRICT, CARLIN TREND, EUREKA COUNTY, NEVADA, IN RAINES, G.L., ET AL, EDS., GEOLOGY AND ORE DEPOSITS OF THE GREAT BASIN, THE GEOLOGICAL SOCIETY OF NEVADA, RENO, P. 625-633.

Reference (Deposit): USBM (WINNEMUCCA) MILS NO. 266, REFERENCE NO. 3201100159.

Reference (Deposit): MINING MAGAZINE, OCTOBER, 1989, VOL. 161, NO. 4, P. 256-261.

Reference (Deposit): ROTA, J.C., 1988, THE GOLD QUARRY MINE: HISTORY AND GENERAL GEOLOGY, IN SCHAFER, R., ET AL, BULK MINEABLE PRECIOUS METAL DEPOSITS OF THE WESTERN UNITED STATES, THE GEOLOGICAL SOCIETY OF NEVADA, RENO, P. 49-56.

Reference (Deposit): NBMG, 1989, THE NEVADA MINERALS INDUSTRY - 1988, NBMG SPECIAL PUBLICATION MI-1988.

Reference (Deposit): STATE DIVISION OF MINE INSPECTION, 1983, DIRECTORY OF NEVADA MINE OPERATIONS ACTIVE DURING CALENDAR YEAR 1983.

Reference (Deposit): DAMES AND MOORE, 1983(?), ENVIRONMENTAL ASSESSMENT OF THE CARLIN GOLD QUARRY PROJECT...

Reference (Deposit): FORTUNE, DECEMBER 27, 1982, "THE HUGE FIND IN ROY ASH'S BACKYARD".

Reference (Deposit): NBMG, 1991, THE NEVADA MINERALS INDUSTRY - 1990, NBMG SPECIAL PUBLICATION MI-1990.

Reference (Deposit): RYNEER, R., 1992, ECONOMIC HISTORY OF THE CARLIN TREND, IN BUFFA, R. AND COYNER, A., GEOLOGY AND ORE DEPOSITS OF THE GREAT BASIN - FIELD TRIP GUIDEBOOK COMPENDIUM, THE GEOLOGICAL SOCIETY OF NEVADA, RENO, P. 838-843.

Reference (Deposit): ROTA, J., 1987, GEOLOGY OF NEWMONT GOLD COMPANY'S GOLD QUARRY DEPOSIT, EUREKA COUNTY, NEVADA, IN ELLIOTT, I. AND SMEE, B. EDS., GEOEXPO/86 - EXPLORATION IN THE NORTH AMERICAN CORDILLERA, THE ASSOCIATION OF EXPLORATION GEOCHEMISTS, REXDALE, ONTARIO, P. 42-50.

Reference (Deposit): NBMG, 1994, MI-1993

Reference (Production): NBMG, 1991, THE NEVADA MINERALS INDUSTRY - 1990, NBMG SPECIAL PUBLICATION MI-1990. NBMG MI-1993

Reference (Deposit): SOUTHERN PACIFIC CO., 1964, MINERALS FOR INDUSTRY.

Reference (Deposit): VANDERBURG, W.O., 1938, RECONNAISSANCE OF MINING DISTRICTS IN EUREKA COUNTY, NV, USBM INFORMATION CIRCULAR 7022.

Reference (Deposit): BENTZ, J., BROOKS, S., MCFARLANE, 1982, FIELD EXAMINATION REPORT, 5/27/82.

Reference (Deposit): ROBERTS, R.J. ET AL, 1967, GEOLOGY AND MINERAL DEPOSITS OF EUREKA CO., NEVADA, NBMG BULLETIN 64

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Nevada Gold

Nevada has a total of 368 distinct gold districts. Of the of those, just 36 are major producers with production and/or reserves of over 1,000,000 ounces, 49 have production and/or reserves of over 100,000 ounces, with the rest having less than 100,000 ounces. Read more: Gold Districts of Nevada.