The Tuscarora Deposit is a gold mine located in Elko county, Nevada.
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
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Tuscarora Deposit MRDS details
Site Name
Primary: Tuscarora Deposit
Secondary: Dexter Mine
Commodity
Primary: Gold
Secondary: Silver
Tertiary: Titanium
Location
State: Nevada
County: Elko
District: Tuscarora
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.
Administrative Organization: Elko BLM Administrative District
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Tuscarora Gold Mines, Inc.
Owner Name: Granges Exploration Ltd.
Home Office: Canada
Info Year: 1988
Owner Name: Horizon Gold Shares, Inc.
Home Office: Colorado
Info Year: 1988
Owner Name: Homestake Canada Ltd
Home Office: Canada
Info Year: 1996
Years: 1991 -
Owner Name: Carlin Resources Corp.
Percent: 40.00
Home Office: Canada
Info Year: 1996
Owner Name: Fischer-Watt Gold Co., Inc.
Percent: 15.00
Home Office: Idaho
Info Year: 1996
Owner Name: Silver Standard Resources Inc. (3%Nsr)
Home Office: Canada
Info Year: 1996
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: stockwork
Plant Type: Leach
Plant Subtype: Precipitation
Operation Type: Surface
Mining Method: Open Pit
Milling Method: Leach-Precipitation
Year First Production: 1875
Discovery Year: 1875
Years of Production:
Organization:
Significant: Y
Deposit Size: L
Physiography
Not available
Mineral Deposit Model
Model Name: Epithermal vein, Comstock
Orebody
Form: STOCKWORK
Structure
Type: L
Description: N.E. STRIKING NORMAL FAULTS, DIPPING NW
Alterations
Alteration Type: L
Alteration Text: POTASSIC ALTERATION OF BEDDED ANDESITE
Rocks
Name: Andesite
Role: Host
Description: adularized
Age Type: Host Rock
Age Young: Tertiary
Analytical Data
Not available
Materials
Ore: Gold
Ore: Adularia
Ore: Dickite
Ore: Chlorite
Gangue: Quartz
Comments
Comment (Development): LARGE, LOW-GRADE GOLD DEPOSIT, DISCOVERED AFTER THE SILVER MINES HAD BEEN DEVELOPED. IT WAS WORKED UNTIL 1898, WHEN THE INFLUX OF WATER BECAME TOO GREAT
Comment (Geology): GEOL.COM: THE DEPOSITS ARE STOCKWORKS ALONG FRACTURES THAT TREND EASTWARD AND DIP NORTHWARD IN ADULARIZED BEADED ANDESITE. THE FRACTURE ZONE IS 1,400 FT LONG, 200 FT. WIDE AND WAS MINED TO A 300' DEPTH. ZONE CONTAINS MANY CLOSELY SPACED VEINLETS OF QUARTZ AND ADULARIA. FREE GOLD IS DEPOSITED IN DRUSY CAVITIES IN THE VEINLETS AND ALSO REPLACING BEDDED ANDESITE. SILVER CONTENT SO DISPERSED THAT VERY LITTLE SECONDARY ENRICHMENT OCCURRED
Comment (Identification): This record incorporates all material from record No. W700395 which is a very incomplete record and should be deleted from the database.
Comment (Deposit): DEPOSITS ARE STOCKWORKS ALONG FRACTURES THAT TREND EASTWARD AND DIP NORTH IN ADULARIZED ANDESITE. ZONE CONTAINS MANY CLOSELY-SPACED VEINLETS OF QUARTZ AND ADULARIA. FREE GOLD IS DEPOSITED IN DRUSY CAVITIES IN THE VEINLETS.
Comment (Commodity): Gangue Materials: GANGUE: QUARTZ, ADULARIA, DICKITE, CHLORITE, TITANIUM MINERALS
Comment (Commodity): Ore Materials: NATIVE GOLD
Comment (Production): http://www.terracogold.com/files/Tuscarora_43-101_FinalV2_screen.pdf Total production in the district was seven million ounces of silver and 500,000 ounces of gold up to 1995, according to the report by Cruson (1995). Of the reported production, 25,000 ounces of the gold and 200,000 ounces of silver were mined from the Dexter Mine between 1989 and 1990. Placer deposits are reported to have contributed 300,000 ounces of the total gold, but the number ?is not well documented.?
References
Reference (Deposit): Cruson, Michael G., (1995), Progress Report on the Tuscarora District Elko County, Nevada; Cruson & Pansze, Geologists.
Reference (Ownership): AMERICAN MINES HANDBOOKS, 1987-1996.
Reference (Deposit): NEV. DIV. MINE INSPECTION, 1983, DIRECTORY OF NEVADA MINE OPERATIONS ACTIVE DURING CALENDAR YEAR 1982.
Reference (Ownership): RANDOL MINING DIRECTORY, 1996/97, U.S. MINES AND MINING COMPANIES, P277.
Reference (Ownership): RANDOL MINING DIRECTORY, 1994/95, U.S. MINES AND MINING COMPANIES, P357.
Reference (Deposit): NEV. DIV. MINE INSPECTION, 1991, DIRECTORY OF NEVADA MINE OPERATIONS ACTIVE DURING CALENDAR YEAR 1990, P. 23.
Reference (Deposit): SMITH R. M. (1976-56) MINERAL RES. OF ELKO CO. NEV., USGS OPEN-FILE REPORT
Reference (Deposit): NOLAN, T. B. (1936) TUSCARORA MINING DISTRICT, ELKO CO. NEV., NEV. BUR. OF MINES BULL 25
Reference (Deposit): EMMONS W. H. (1910) RECONNAISSANCE OF ELKO LANDER AND EUREKA CO'S NEV., USGS BULL 408
Reference (Deposit): NBMG, 1994, MI-1993
Reference (Deposit): Long, K.R., DeYoung, J.H., Jr., and Ludington, S.D., 1998, Significant deposits of gold, silver, copper, lead, and zinc in the United States: U.S. Geological Survey Open-File Report 90-206A, 33 p.; 98-206B. one 3.5 inch diskette.
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.
