The Silver Circle is a copper 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
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.
Silver Circle MRDS details
Site Name
Primary: Silver Circle
Secondary: Queen of the Hills Mine
Commodity
Primary: Copper
Secondary: Silver
Secondary: Lead
Secondary: Gold
Location
State: Nevada
County: Elko
District: Contact (48)
Land Status
Not available
Holdings
Not available
Workings
Type: Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1928
Discovery Year: 1928
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Columbia Plateau
Physiographic Section: Snake River Plain
Mineral Deposit Model
Model Name: Skarn Cu
Orebody
Form: IRREGULAR TO TABULAR
Structure
Type: L
Description: Granodiorite Stock With Assoc. Faults, Fractures
Alterations
Alteration Type: L
Alteration Text: Silicification, Oxidation
Rocks
Name: Diorite
Role: Host
Age Type: Associated Rock Unit
Age Young: Late Jurassic
Name: Diorite
Role: Host
Age Type: Host Rock Unit
Age Young: Late Permian
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Ore: Bornite
Ore: Galena
Ore: Chalcocite
Gangue: Diopside
Gangue: Chlorite
Gangue: Garnet
Gangue: Actinolite
Gangue: Biotite
Gangue: Tremolite
Gangue: Axinite
Comments
Comment (Geology): SULFIDE ORE PRESENT IN OUTCROPS DUE TO IMPERVIOUS AND RESISTANT NATURE OF ACTINOLITE.
Comment (Deposit): LITTLE DONE HERE PRIOR TO 1928. 1,000 TONS OF SULFIDE ORE SHIPPED FROM 1928 TO MID-1930. ORE CONTAINED 11-29% CU, WITH A LITTLE PB AND AG. THE MINE IS OPENED TO 250 FT. BY A SHAFT INCLINED 50 SOUTH AND TUNNELS DRIVEN NE-WARD. THE META-LIMESTONE IS 100 WIDE ALONG THE GRANODIORITE CONTACT, AND THE PRINCIPAL ORE ZONE WITHIN IT IS 4 1/2 TO 10 FEET WIDE (SCHRADER, 1935, P 31-2.) ; INFO.SRC : 1 PUB LIT
Comment (Production): $5,000-$100,000
Comment (Development): LITTLE DONE HERE PRIOR TO 1928. 100 TONS ORE SHIPPED FROM 1928-1930, CONTAINING 11-29% CU WITH A LITTLE PB AND AG.
Comment (Deposit): IGNEOUS CONTACT ZONE
Comment (Workings): SHAFT, TUNNELS
References
Reference (Deposit): SMITH, R.M. (1976) MINERAL RESOURCES OF ELKO CO., NEV: USGS OFR 76-56, P 39-45.
Reference (Production): SCHRADER (1935) P. 31-32
Reference (Deposit): SCHRADER, F.C. (1935) THE CONTACT MINING DISTRICT, NEVADA: USGS BUL. 847-A
Reference (Deposit): HOPE, R.A. & COATS, R.R. (1976) PRELIM. GEOLOGIC MAP OF ELKO CO., NEV: USGS OFR 76-779
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.
