North Aspen

The North Aspen is a silver and gold mine located in Eureka county, Nevada at an elevation of 6,890 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: North Aspen
Secondary: Barbi Lake Copper Mines
Secondary: Zeke
Secondary: Buckhorn Mine
Secondary: Buckhorn
Secondary: North Buckhorn
Secondary: South Buckhorn
Secondary: South Aspen

Commodity

Primary: Silver
Primary: Gold

Location

State: Nevada
County: Eureka
District: Buckhorn District

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.

Holdings

Type: Unknown

Workings

Not available

Ownership

Owner Name: Royal Gold Inc.
Home Office: Colorado
Info Year: 1996

Owner Name: Equinox Resources Ltd. (Sold To Helca Mining Co., 1994.
Company ID: 2600785
Percent: 23.60
Home Office: Canada
Info Year: 1994

Owner Name: Hecla Mining Co. (Purcheased Form Equinox Resources Ltd)
Company ID: 2600785
Percent: 23.60
Home Office: Idaho
Info Year: 1993
Years: 1994 -

Owner Name: Cominco Resources International Ltd.
Percent: 76.40
Home Office: Nevada
Info Year: 1993

Production

Year: 1991
Description: Ag 73000 Oz
Year: 1991
Description: Au 21000 Oz

Deposit

Record Type: Site
Operation Category: Plant
Plant Type: Leach
Operation Type: Surface
Mining Method: Open Pit
Milling Method: Leach-Solvent-Extract-Precipitation
Year First Production: 1984
Discovery Year: 1908
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: Y
Deposit Size: S

Physiography

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

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Unknown: Silver
Unknown: Pyrite
Unknown: Montmorillonite
Unknown: Marcasite
Unknown: Limonite
Unknown: Kaolinite
Unknown: Gold
Unknown: Adularia

Comments

Comment (Geology): ALL THESE COMMENTS ARE FOR THE OXIDE ORE BODY NOW DEPLETED. GENERAL SIZE OF ORE BODY IS SMALL. SHAPE OF ORE BODY IRREGULAR; PODS. ORE BODY IS ALSO CONTROLLED BY LITHOLOGY. TYPE OF WALL ROCK ALTERATION IS ALSO KAOLINIZATION. PIT AVERAGE DIMENSIONS ARE ESTIMATED. RECORD 1 IS NORTH BUCKHORN. RECORD 2 IS SOUTH BUCKHORN. BUCKHORN MINE CONSISTS OF AT LEAST 2 ORE BODIES. CURRENT PLANS ARE TO OPERATE 2 SEPARATE OPEN PITS, THE NORTH BUCKHORN AND THE SOUTH BUCKHORN. ORE OCCURS WITHIN 60M OF THE SURFACE. ORE IS WITHIN OXIDE AND SULFIDE ZONES. COMPANY PROJECTED MINE LIFE FROM 1984 IS 4 YRS; MILL 7 YRS.

Comment (Economic Factors): MILL IS NO LONGER IN OPERATION, CLOSED 1991-1993. THE MILL IS UNDER DEVELOPMENT ON SITE. THE MILLING METHOD IS AGGOLMERATION, CYANIDE HEAP LEACH, MERRILL-CROWE ZINC PRECIP., SMELTING. PROCESS RATE IS 680,000 MT/A.

Comment (Geology): PYRITE IS ARGENTIFEROUS AND AERIFEROUS.

Comment (Deposit): SULFIDE ORE ONLY. HEAP LEACH OPERATION, CEASED, 1993. MINING CEASED IN 1991, OXIDE ORE BODY DEPLETED. SULFIDE ORE BODY REMAINS BELOW. 997,900 MT SULFIDE ORE @ 3.77 G/MT AU IS KNOWN BELOW MINED OUT PITS. RECLAMATION OF MINE SHOULD CONTINUE THORUGH 1994, OPEN PITS, WASTE DUMPS AND HAUL ROADS HAS BEEN COMPLETED. GENERAL LOCATION IS ABOUT 90 KM SW OF CARLIN.

Comment (Exploration): DISCOVERY METHOD WAS SURFACE PROSPECTING.

Comment (Production): PAST PRODUCTION--OPERATIONS THROUGH 1950 YIELDED ABOUT 1200 KG AU AND 10,000 KG AG. ANNUAL PRODUCTION IS 934 KG AU; 8400 KG AG. 1988 PROD. = 38,000 OZ. AU. 1989 PROD. = 28,900 OZ AU FROM 731,000 MT ORE LEACHED. 1989 RESERVE = ONLY 43,000 CONT.OZ. AU.

Comment (Environmental Factors): AU/AG GRADES IN ENVIRONMENTAL COMMODITY TABLE ARE MAXIMUM.

Comment (Workings): TAILS ARE FROM MINING OPERATIONS BETWEEN 1912 AND 1937, AND CONSIST OF 80% CYANIDATION TAILS (-150 MESH); THE REST ARE FLOTATION TAILS. HEAP MATERIAL CONSISTS OF ALTERED BASALT CONGLOMERATE CRUSHED TO -2 IN. AND AGGLOM. WITH 10 LB/T CEMENT AND LIME. TOTAL WATER USAGE SHOWN IS MAXIMUM.

Comment (Geology): COMMENTS ARE FOR THE OXIDE ORE BODY ONLY. BASALTIC ANDESITE FLOWS UNDIFFERENTIATED. BRECCIA IS SILICIFIED. GRAVEL AND CONGLOMERATE ARE TERTIARY.

References

Reference (Deposit): MONROE, S. C. GEOLOGY AND GEOCHEMISTRY OF THE

Reference (Deposit): GEOL. SURV. BULL. 303, 1907, PP. 83-93.

Reference (Deposit): BULLFROG, AND THEIR DISTRICTS IN SOUTHEAST NEVADA. U.S.

Reference (Deposit): TAYLOR MINE. APR. 3, 1984, PP. C5.

Reference (Deposit): WELLS, J. D., AND J. E. ELLIOTT. PRELIMINARY

Reference (Deposit): SPOKESMAN-REVIEW (SPOKANE, WA). NERCO BUYS HALF OF

Reference (Deposit): PP. 14-33.

Reference (Deposit): AND BULL. SOC. ECON. GEOL., V. 66, NO. 1, 1971,

Reference (Deposit): SILBERMAN, AND E. H. MCKEE. GOLD BEARING DEPOSITS IN

Reference (Deposit): ROBERTS, R. J., A. S. RADTKE, R. R. COATS, M. L.

Reference (Deposit): BUREAU OF MINES AND GEOL. BULL. 64, 1967, 152 PP.

Reference (Deposit): GEOLOGY AND MINERAL RESOURCES OF EUREKA COUNTY, NEVADA. NV

Reference (Deposit): ROBERTS, R. J., K. M. MONTGOMERY, AND R. E. LEHNER.

Reference (Deposit): OPERATIONS ACTIVE DURING CALENDAR YEAR 1990, P. 35.

Reference (Deposit): NEV. DIV. MINE INSPECTION, 1991, DIRECTORY OF NEVADA MINE

Reference (Deposit): SOC. AM., NOV. 5-8, 1984, RENO, NV, P. 599.

Reference (Deposit): ABSTRACTS WITH PROGRAMS, 1984. 97TH ANNU. MEETING, GEOL.

Reference (Deposit): BUCKHORN MINE, EUREKA COUNTY, NEVADA. ABSTR. NO. 33,495 IN

Reference (Deposit): NORTH-CENTRAL NEVADA AND SOUTHWESTERN IDAHO. ECON. GEOL.

Reference (Deposit): DISTRICT. PAPER IN PRELIMINARY ACCOUNT OF GOLDFIELD,

Reference (Deposit): EMMONS, W. H., AND G. H. GARREY. NOTES ON THE MANHATTAN

Reference (Deposit): ANNOUNCED AT BUCKHORN. SEPT. 19, 1983, P. 12. 136.

Reference (Deposit): ELKO (NV) DAILY FREE PRESS. $12 MILLION GOLD PROJECT

Reference (Deposit): DEPOSITS. MINOBRAS, 1981, 114 PP.

Reference (Deposit): ELEVATORSKI, E. A. DISSEMINATED/REPLACEMENT GOLD

Reference (Reserve-Resource): COMPANIES, P233, "BUCKHORN".

Reference (Reserve-Resource): RANDOL, MINING DIRECTORY, 1996/1997, U.S. MINES AND MINING

Reference (Reserve-Resource): FOR YERINGTON, NOV. 1982, P45.

Reference (Reserve-Resource): WALLACE (ID) MINER, COMINCO WILL WORK BUCKHORN GOLD, BIDS

Reference (Ownership): ROYAL GOLD INCORPORATED 1995 ANNUAL REPORT. P6.

Reference (Deposit): GEOLOGIC AND GEOCHEMICAL MAPS OF THE BUCKHORN MINE AREA,

Reference (Deposit): P. 92.

Reference (Deposit): WORLD MINING - UNITED STATES: NEVADA. V. 34, NO. 5, 1981,

Reference (Deposit): WORLD MINING (SAN FRANCSICO) WHAT'S GOING ON IN

Reference (Deposit): NUMBER 12, NOV. 7, 1982, P. 3.

Reference (Deposit): BUCKHORN GOLD MINE SET TO COME ON LINE IN EARLY 1984.

Reference (Deposit): WESTERN MINING LETTER (BISBEE, AZ). COMINCO'S

Reference (Deposit): SEPTEMBER 9, 1983, P. 17.

Reference (Deposit): ISOCHRON/WEST, NO. 8, 1973, P. 37.

Reference (Deposit): WENATCHEE (WA) WORLD. GOLD IN NEVADA.

Reference (Deposit): MINERALIZATION AT BUCKHORN, EUREKA COUNTY, NEVADA.

Reference (Deposit): WELLS, J. D., AND M. L. SILBERMAN. K-AR AGE OF

Reference (Deposit): PAPER 750-C, 1971, PP. C127-C135.

Reference (Deposit): CORTEZ-BUCKHORN AREA, NEVADA. U.S. GEOL. SURV. PROF.

Reference (Deposit): AGE OF THE IGNEOUS ROCKS ASSOCIATED WITH ORE DEPOSITS,

Reference (Deposit): PP.

Reference (Deposit): WELLS, J. D., J. E. ELLIOTT, AND J. D. OBRADOVICH.

Reference (Deposit): MOUNTAINS, NEVADA. U.S. GEOL. SURV. BULL. 1312P, 1971, 18

Reference (Deposit): RECONNAISSANCE OF THE CORTEZ-BUCKHORN AREA, SOUTHERN CORTEZ

Reference (Deposit): WELLS, J. D., AND J. E. ELLIOTT. GEOCHEMICAL

Reference (Deposit): REPORT 69-315, 1969, 43 PP.

Reference (Deposit): EUREKA COUNTY, NEVADA. U.S. GEOLOGICAL SURVEY OPEN FILE

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.