Dee Gold Mine

Site Name

Primary: Dee Gold Mine
Secondary: Boulder Creek Mine
Secondary: Main Zone
Secondary: Ridge Zone
Secondary: North Extension

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Commodity

Primary: Gold
Primary: Silver
Tertiary: Barium-Barite
Tertiary: Thallium
Tertiary: Antimony
Tertiary: Arsenic
Tertiary: Mercury

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Location

State: Nevada
County: Elko
District: Bootstrap District

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Land Status

Land ownership: BLM Administrative Area
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

Not available

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Ownership

Owner Name: Livermore, Mr. John S.
Percent: 12.00

Owner Name: International Corona Corp.
Percent: 44.00

Owner Name: Rayrock Yellowknife Resources
Percent: 44.00

Owner Name: Cordex Syndicate

Owner Name: Dee Gold Mining Co. ; Art Schwandt, Gen. Mgr.
Home Office: P.O. Box 1193, Elko, Nv 89801
Years: 1983 -

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Production

Year: 1990
Material type: ORE - AU
Description: Ap_Grade: ^0.049 Opt Au
Year: 1989
Material type: ORE - AU
Description: Ap_Grade: ^0.047 Opt Au
Year: 1988
Material type: ORE - AU
Description: Ap_Grade: ^0.105 Opt Au

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Deposit

Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Year First Production: 1984
Discovery Year: 1980
Years of Production:
Organization:
Significant: N
Deposit Size: S

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Physiography

Not available

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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: R
Description: Greybeck (1985) Proposes That Dee Is Located At The Leading Edge Of The Golconda Thrust And That Beds Exposed In The Dee Mine Pit Lie On The West Flank Of A Close To Tight N-Ne Trending Antiform.

Type: L
Description: See Comments

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Alterations

Alteration Type: L
Alteration Text: Silicification And Argillization Of Originally Calcareous Siltstones And Limestones Are The Dominant Alteration Effects. Where Mineralized, Intrusive Dikes Of Intermediate Composition Are Sericitized And Often Silicified.

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Rocks

Not available

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Analytical Data

Analytical Data: BAGBY, ET AL (1985) IDENTIFIED A LARGE MULTIELEMENT (AU, AS, SB, HG, TL, AG) SOIL ANOMALY COVERING PARTS OF ALL KNOWN ORE ZONES. SAMPLES CONTAINING ANOMALOUS HG LIE APPROXIMATELY 60 M DIRECTLY ABOVE ORE, WHEREAS SAMPLES CONTAINING ANOMALOUS TL ARE OFFSET APPROXIMATELY 15 M TO THE SIDE OF KNOWN ORE. KNOWN ORE ZONES ALSO CORRELATE SPATIALLY WITH CLUSTERS OF 3 OR MORE SAMPLES CONTAINING ANOMALOUS CONCENTRATIONS OF AU-HG, AU-SB, OR AS.

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Materials

Ore: Gold
Gangue: Pyrite
Gangue: Stibnite
Gangue: Barite

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Comments

Comment (Location): DEE IS THE NORTHERNMOST DEPOSIT OF THE CARLIN TREND, ALTHOUGH SOME AUTHORS CONTINUE THE TREND NORTHWARD TO INCLUDE THE HOLLISTER OREBODIES. . INFO FROM LAND.ST :1972; PREVIOUS QUAD DESIGNATION = MCDERMITT (1971) 1:250000; PREVIOUS QUAD DESIGNATION = SANTA RENIA FIELDS (1970) 1:24000

Comment (Development): EXPL.COM: THE ORIGINAL DISCOVERY WAS MADE IN BOULDER CREEK IN 1980 BY DELAMARE, WORKING FOR CORDEX EXPLORATION CO. SUBSEQUENT DRILLING OF 247 HOLES TOTALLING 120,000 FT. LOCATED THE MAIN AND RIDGE OREBODIES. A MINE FEASIBILITY STUDY WAS COMMISSIONED IN 1982. THE PRODUCTION DECISION WAS MADE IN APRIL, 1983. PRODUCTION OF MILL GRADE ORE BEGAN IN 1984. A HEAP LEACHING OPERATION TO TREAT LOWER GRADE ORE COMMENCED JUNE 1, 1985. ; TOTAL$: 21.0 ; ECON.COM: CASH COSTS OF AU PRODUCTION WERE <$200/OZ. IN 1987, $204/OZ. IN 1988, $247/OZ. IN 1989, AND $264/OZ. IN 1990. MINING COSTS WERE $6 PER TON MILLED IN 1987. THE DEE MINE HAS A PROJECTED MINE LIFE OF NINE YEARS AND HAS CREATED 100 PERMANENT NEW JOBS WITH A PAYROLL OF $3.0 MILLION PER YEAR. TOTAL EXPENDITURE ON PAYROLL, SUPPLIES, SERVICES, TAXES, AND ROYALTIES EXCEEDS $7.0 MILLION PER YEAR.

Comment (Workings): DEE HAS A 900 TPD CAPACITY CYANIDE LEACHING MILL WITH A CARBON-IN-PULP CIRCUIT TO RECOVER GOLD. THE HEAP LEACH IS PLANNED TO TREAT APPROX. 0.5 MILLION TONS PER YEAR. APPROXIMATELY 55% AU RECOVERY IS ACHIEVED FROM HEAP LEACHING OVER A SIX WEEK PERIOD. AVERAGE RATIO OF WASTE TO COMBINED ORE IS 6:1. THE TOTAL AREA DISTURBED BY THE OPERATIONS WILL NOT EXCEED 400 ACRES.

Comment (Geology): WESTERN FACIES, UPPER PLATE ROCKS HOST THE ORE.

Comment (Deposit): DEE CONSISTS OF TWO OREBODIES, THE MAIN AND RIDGE ZONES. DIMENSIONS ARE FOR THE MAIN OREBODY.

Comment (Reserve-Resource): PROJECTED ANNUAL RECOVERY WAS 40000 OZ. AU/YR. 1984 FIGURES REPRESENT COMBINED PRE-MINING RESERVE ESTIMATES FOR THE MAIN AND RIDGE OREBODIES. 1990 FIGURES REPRESENT PROVEN AND PROBABLE RESERVES AS OF 12/31/90.

Comment (Production): 1988 AU RECOVERY WAS 57.07%, FOR A RECOVERABLE GRADE OF 0.06 OPT AU. 1989 AU RECOVERY WAS 85.60%, FOR A RECOVERABLE GRADE OF 0.04 OPT AU. 1990 AU RECOVERY WAS 81.40%, FOR A RECOVERABLE GRADE OF 0.04 OPT AU.

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References

Reference (Production): DIVISION OF MINE INSPECTION, 1983, DIRECTORY OF NEVADA MINE OPERATIONS ACTIVE DURING CALENDAR YEAR 1983. MCFARLANE, D., 1992, GOLD PRODUCTION IN THE CARLIN TREND, IN BUFFA, R. AND COYNER, A., EDS., GEOLOGY AND ORE DEPOSITS OF THE GREAT BASIN - FIELD TRIP GUIDEBOOK COMPENDIUM, THE GEOLOGICAL SOCIETY OF NEVADA, RENO, P. 841-843. MINING JOURNAL/MONTAGU MINING FINANCE, MINING DATABASE, 8/10/91. NBMG, 1991, THE NEVADA MINERAL INDUSTRY 1990, NBMG SPECIAL PUBLICATION MI-1990. NBMG MI-1993

Reference (Reserve-Resource): NBMG MI-1993

Reference (Deposit): BERGWALL, F., 1992, GEOLOGY OF THE DEE GOLD MINE, IN BUFFA, R. AND COYNER, A., EDS., GEOLOGY AND ORE DEPOSITS OF THE GREAT BASIN - FIELD TRIP GUIDEBOOK COMPENDIUM, THE GEOLOGICAL SOCIETY OF NEVADA, RENO, P. 867.

Reference (Deposit): MINING JOURNAL/MONTAGU MINING FINANCE, MINING DATABASE, 8/10/91.

Reference (Deposit): ABBOTT, E., LAUX, D., KEITH, S., 1992, GEOCHEMISTRY AND ORE DEPOSITS - INFLUENCE OF MAGMA CHEMISTRY, IN BUFFA, R. AND COYNER, A., EDS., GEOLOGY AND ORE DEPOSITS OF THE GREAT BASIN - FIELD TRIP GUIDEBOOK COMPENDIUM, THE GEOLOGICAL SOCIETY OF NEVADA, RENO, P. 568.

Reference (Deposit): BAGBY, W.C., PICKTHORN, W.J., AND GOLDFARB, R.J., 1985, PATHFINDER ELEMENTS IN SOILS OVER THE DEE DISSEMINATED GOLD DEPOSIT, ELKO COUNTY, NEVADA, IN KRAFFT, K., ED., USGS RESEARCH ON MINERAL RESOURCES-1985, PROGRAM AND ABSTRACTS, USGS CIRCULAR 949, P.1.

Reference (Deposit): GREYBECK, J.D., 1985, GEOLOGY OF THE DEE MINE AREA, ELKO COUNTY, NEVADA, UNPUBLISHED M.S. THESIS, UNIVERSITY OF IDAHO.

Reference (Deposit): JONES, R., 1989, CARLIN TREND GOLD BELT: THE GEOLOGY, MINING MAGAZINE, VOL. 161, NO. 4, P. 256-261.

Reference (Deposit): THORSTAD, L., 1989, CARLIN TREND GOLD BELT: THE PRODUCERS, MINING MAGAZINE, VOL. 161, NO. 4, P. 263-267.

Reference (Deposit): ELLIS, R., 1987, THE DEE GOLD MINE, GEOLOGICAL SOCIETY OF NEVADA 1987 FALL FIELD TRIP GUIDEBOOK, SPECIAL PUBLICATION NO. 6, P. B23-B26.

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

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

Reference (Deposit): NEVADA DIVISION OF MINERALS,1994

Reference (Deposit): BONHAM, H.F., 1982, RESERVES, HOST ROCKS, AND AGES OF BULK-MINEABLE PRECIOUS METAL DEPOSITS IN NEVADA; NBMG OPEN-FILE REPORT 82-11.

Reference (Deposit): PAYDIRT, APRIL 1983, PG 27 A.

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

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

Reference (Deposit): NBMG MI - 1986.

Reference (Deposit): MCFARLANE, D., 1992, GOLD PRODUCTION IN THE CARLIN TREND, IN BUFFA, R. AND COYNER, A., EDS., GEOLOGY AND ORE DEPOSITS OF THE GREAT BASIN - FIELD TRIP GUIDEBOOK COMPENDIUM, THE GEOLOGICAL SOCIETY OF NEVADA, RENO, P. 841-843.

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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.