Maggie Creek Open Pit Gold Mine

Site Name

Primary: Maggie Creek Open Pit Gold Mine
Secondary: NBMG Sample Sites 562
Secondary: 133
Secondary: Mc Leach Deposit
Secondary: Deep West Orebody

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Commodity

Primary: Gold
Secondary: Silver
Tertiary: Zinc
Tertiary: Barium-Barite
Tertiary: Arsenic

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Location

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

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Land Status

Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

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Holdings

Not available

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Workings

Type: Surface

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Ownership

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

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Production

Year: 1984
Material type: ORE AU
Description: Ap_Grade: ^0.079 Oz/Ton

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Deposit

Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Year First Production: 1980
Year Last Production: 1986
Discovery Year: 1977
Years of Production:
Organization:
Significant: N
Deposit Size: M

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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

Not available

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Structure

Type: R
Description: Located At Se Corner Of Carlin Window In Roberts Mountains Thrust

Type: L
Description: Fissures, Fractures Zones, Faulting Folding. The Less Fault, A High-Angle Ne-Striking Structure.

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Alterations

Alteration Type: L
Alteration Text: Oxidation, Silicification

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Rocks

Not available

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Analytical Data

Analytical Data: SAMPLE 1562 OF VUGGY SILICIFIED SILTSTONE BRECCIA CONTAINS 2% FE, 0.3% MG, 1% CA, 0.1% TI, 500 PPM MN, 7 PPM AG, 1500 PPM AS, 10 PPM AU, 100 PPM B, 100 PPM BA, 5 PPM BE, 15 PPM BI, 300 PPM CD, 100 PPM CO, 50 PPM CR, 100 PPM CU, 20 PPM LA, 500 PPM NI, 100 PPM PB, 1500 PPM SB, 5 PPM SC, 300 PPM V, 150 PPM W, 20 PPM Y, 3000 PPM ZN, 30 PPM ZR. SAMPLE 133 OF ALTERED, OXIDIZED, VEINED SILTSTONE FROM OPEN PIT CONTAINS 3% FE, 0.2% MG, 1.5% CA, 0.15% TI, 500 PPM MN, 1 PPM AG, 1000 PPM AS, 200 PPM B, 5000 PPM BA, 15 PPM BI, 10 PPM CO, 50 PPM CR, 150 PPM CU, 20 PPM LA, 15 PPM MO, 100 PPM NI, 70 PPM PB, 200 PPM SB, 7 PPM SC, 200 PPM SR, 500 PPM B, 30 PPM Y, 700 PPM ZN, 50 PPM ZR.

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Materials

Ore: Barite
Ore: Illite
Ore: Quartz
Ore: Calcite
Ore: Montmorillonite
Ore: Kaolinite
Ore: Alunite

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Comments

Comment (Commodity): THERE IS AN ASSOCIATION OF GOLD AND PYRITE IN THE UNOXIDIZED ORE. AU:AG RATIO 19:1.

Comment (Location): LOCATED ON THE SE FLANK OF THE CARLIN WINDOW. OPEN PIT OVERLAPS GOLD QUARRY DEPOSIT. DO NOT CONFUSE THIS MINE WITH MAGGIE CREEK BARITE MINE (UTM 4517777N, 565410E, RECORD #M232283). . INFO FROM LAND.ST :1972

Comment (Reserve-Resource): MINE TOUR BY NBMG GEOLOGISTS, 5/82.

Comment (Workings): MAGGIE CREEK IS DIVIDED INTO THE MAIN PIT AND THE WEST PIT. MINING RATE IN 1980 WAS 16,000 TPD ORE AND WASTE. FIGURES REPRESENT MAIN PIT DIMENSIONS IN 1986 WHEN OPERATIONS WERE TRANSFERRED TO THE GOLD QUARRY MINE. THE MAGGIE CREEK MINE CURRENTLY FORMS THE WEST AND SOUTHWEST PORTIONS OF THE GOLD QUARRY PIT. ORE REMAINING AT THE IDLE MAGGIE CREEK DEPOSIT WILL BE MINED AS THE EXPANDING GOLD QUARRY PIT ENCOMPASSES IT.

Comment (Geology): HOST ROCKS ARE PART OF THE UPPER PLATE TRANSITIONAL SERIES.

Comment (Production): MINED AT RATE OF 16000 TPD IN 1979. INTERMITTENT PRODUCTION, 1984-1988.

Comment (Development): THE FIRST CLAIMS IN THE VICINITY OF MAGGIE CREEK WERE 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 WERE MINED. THE MAGGIE CREEK CLAIMS WERE REACQUIRED IN 1977 AND A DRILLING PROGRAM WAS INITIATED. DEVELOPMENT DRILLING BEGAN IN THE SPRING OF 1978 AND CONTINUED UNTIL THE FALL OF 1979. MINING BEGAN JULY 1980 AND CEASED IN 1986 WHEN OPERATIONS TRANSFERRED TO THE ADJACENT GOLD QUARRY MINE. PERCUSSION DRILLING IN 1987 REVEALED THAT THE MAGGIE CREEK SOUTH ORE ZONE IS CONTINUOUS AT DEPTH TO THE EAST, BLOSSOMING INTO THE UPPER PORTIONS OF THE DEEP WEST OREBODY. A SMALL DEPOSIT KNOWN AS MC LEACH OCCURS SW OF MAGGIE CREEK ALONG

Comment (Development): EXTENSIONS OF THE GOLD QUARRY/LES FAULT SYSTEM.

Comment (Deposit): FIGURES ARE FOR THE MAIN PIT ORE ZONES.

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References

Reference (Deposit): BENTZ, J.L., BROOKS, S., AND MACFARLANE, 1982, FIELD EXAMINATION AND MINE TOUR, REPORT, MAY 27, 1982.

Reference (Deposit): BENTZ, J.L., ET AL, 1983, A MINERAL INVENTORY OF THE ELKO RESOURCE AREA, ELKO DISTRICT, NEVADA, NBMG OFR 83-9, P. 136-138.

Reference (Deposit): BONHAM, H.F., JR., 1982, NBMG OFR 82-9.

Reference (Deposit): HAUSEN, D., EKBURG, C., AND KULA, F., 1983, GEOCHEMICAL AND XRD-COMPUTER LOGGING FOR LITHOLOGIC ORE TYPE CLASSIFICATION OF CARLIN-TYPE GOLD ORES: IN PROCESS MINERALOGY II, APPLICATIONS IN METALLURGY, CERAMICS, AND GEOLOGY: METALLURGICAL SOCIETY OF AIME, WARRENDALE, PA, P. 421-450.

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

Reference (Deposit): NBMG, 1985, THE NEVADA MINERAL INDUSTRY - 1984, NBMG SPECIAL PUBLICATION MI-1984.

Reference (Deposit): NBMG, 1987, THE NEVADA MINERAL INDUSTRY -1986, NBMG SPECIAL PUBLICATION MI-1986.

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

Reference (Production): PRESS CLIPPINGS, 1980-1984, NBMG DISTRICT FILE 116. 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. NBMG MI-1993

Reference (Reserve-Resource): NBMG, 1988, THE NEVADA MINERAL INDUSTRY - 1987, NBMG SPECIAL PUBLICATION MI-1987. NBMG MI-1993

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

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

Reference (Deposit): VARIOUS PRESS CLIPPINGS, 1980-1984, NBMG FILE 116.

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

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): EKBURG, C., 1986, GENERAL GEOLOGY OF THE MAGGIE CREEK GOLD DEPOSIT, EUREKA COUNTY, NEVADA: IN TINGLEY, J., AND BONHAM, H., EDS., SEDIMENT-HOSTED PRECIOUS METAL DEPOSITS OF NORTHERN NEVADA: NBMG REP. 40, P. 65-68.

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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.