The Silver Dollar Mine is a mica mine located in Custer county, South Dakota at an elevation of 5,400 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
Elevation: 5,400 Feet (1,646 Meters)
Commodity: Mica
Lat, Long: 43.72278, -103.61611
Map: View on Google Maps
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 Dollar Mine MRDS details
Site Name
Primary: Silver Dollar Mine
Commodity
Primary: Mica
Tertiary: Beryllium
Location
State: South Dakota
County: Custer
District: Custer District
Land Status
Administrative Organization: Black Hills
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Owner Name: Custer Mining Account
Years: 1946 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1942
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Interior Plains
Physiographic Province: Great Plains Province
Physiographic Section: Black Hills
Mineral Deposit Model
Not available
Orebody
Form: LENTICULAR
Structure
Type: L
Description: Below The 55 Ft Level Is A Strong Fracture Zone Related To A Fault That Strikes N10w And Dips 20 Ne. There Is Little Displacement, But There Are Numerous Related Joints.
Alterations
Not available
Rocks
Name: Pegmatite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Muscovite
Ore: Beryl
Gangue: Apatite
Gangue: Tourmaline
Gangue: Kyanite
Gangue: Oligoclase
Gangue: Biotite
Gangue: Quartz
Comments
Comment (Commodity): FLAT, HARD, RUBY MICA. MOST BOOKS ARE SMALL.
Comment (Location): LIES A FEW HUNDRED FEET SOUTHEAST OF THE CHICAGO, BURLINGTON AND QUINCY RAILROAD TRACKS.
Comment (Deposit): ZONING IS PRONOUNCED.
Comment (Reserve-Resource): USGS PP 247, P. 191.
Comment (Workings): THE CUT IS 20 FT DEEP. A SHAFT IS 7 FT DEEP WITH SMALL DRIFTS AND RAISES AND A FEW STOPES.
Comment (Geology): THE QUARTZ-MICA SCHIST STRIKES N20W AND DIPS 45-70 DEG SW.
References
Reference (Deposit): U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707.
Reference (Deposit): USGS PP 247, P. 190-191.
Reference (Production): U.S. BUREAU OF MINES INFORMATION CIRCULAR 7707.
Reference (Deposit): ROBERTS, W.L., AND RAPP, GEORGE, 1965, MINERALOGY OF THE BLACK HILLS, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY BULLETIN 18.
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