The Sunshine Mica Prospect is a feldspar and mica mine located in Custer county, South Dakota at an elevation of 5,591 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: 5,591 Feet (1,704 Meters)
Commodity: Feldspar, Mica
Lat, Long: 43.78528, -103.60194
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.
Sunshine Mica Prospect MRDS details
Site Name
Primary: Sunshine Mica Prospect
Commodity
Primary: Feldspar
Primary: Mica
Secondary: Beryllium
Location
State: South Dakota
County: Custer
District: Custer District
Land Status
Land ownership: National Forest
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: Black Hills National Forest
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Howard Townsend And Gus Hendrickson
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Interior Plains
Physiographic Province: Great Plains Province
Physiographic Section: Black Hills
Physiographic Detail: Buckhorn Mountain
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Mica Is Air-Stained, Mineral-Stained And Badly Reeved.
Rocks
Name: Pegmatite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Neoproterozoic
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: Beryl
Ore: Microcline
Ore: Biotite
Ore: Muscovite
Ore: Albite
Gangue: Quartz
Comments
Comment (Deposit): ONE PEGMATITE IS ZONED; ONE IS UNZONED
Comment (Workings): 2 OPEN PITS, ONE IN EACH DIKE
Comment (Commodity): MICA OCCURS IN BOOKS UP TO 6 INCHES IN DIAMETER
Comment (Location): SE 1/4
Comment (Production): CUMULATIVE PRODUCTION INFORMATION - NO DATE WAS GIVEN.
Comment (Development): ECON.COM: ABOUT 25 LB OF THE SHEET MICA WAS CUT FROM 600 LB OF CRUDE MICA, INDICATING 4.2% RECOVERY.
References
Reference (Production): U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707
Reference (Deposit): U. S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707
The Top Ten Gold Producing States
These ten states contributed the most to the gold production that built the West from 1848 through the 1930s. The Top Ten Gold Producing States.
