The Beryl Mica Lode is a mine located in Custer county, South Dakota at an elevation of 5,220 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: 5,220 Feet (1,591 Meters)
Commodity:
Lat, Long: 43.6344, -103.54390
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.
Beryl Mica Lode MRDS details
Site Name
Primary: Beryl Mica Lode
Secondary: Dakota Feldspar Company Mines
Secondary: Dakota Feldspar
Commodity
Tertiary: Niobium (Columbium)
Tertiary: Mica
Tertiary: Tantalum
Tertiary: Beryllium
Location
State: South Dakota
County: Custer
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.
Holdings
Type: Located Claim
Workings
Not available
Ownership
Owner Name: Dakota Feldspar Co. Of Custer S Dakota
Percent: 33.00
Home Office: South Dakota
Info Year: 1976
Owner Name: Harry H Marks Of Custer S Dakota
Percent: 67.00
Home Office: South Dakota
Info Year: 1976
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Surface-Underground
Mining Method: Unknown
Years of Production:
Organization:
Significant: N
Physiography
General Physiographic Area: Interior Plains
Physiographic Province: Great Plains Province
Physiographic Section: Black Hills
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Not available
Comments
Comment (Deposit): HARD COPY FILE CONTAINS FILE REPORT PLUS MAPS.
Comment (Production): Guiteras (1940, p.43) cites a production of 10,000 tons of feldspar up to 1938, and at that time 20 tons of mica was stockpiled at the mine. Page and others (1959. p. 98) state that 615 pounds of sheet and 3,026 pounds of untrimmed punch mica was produced in 1943. About 600 pounds of beryl was produced along with the mica.
References
Reference (Deposit): PART:2 I C 7707 1955 P 186
Reference (Deposit): S BUMINES STAFF REGION V BLACK HILLS MINERAL ATLAS SOUTH D
Reference (Deposit): DAKOTA U.S G S PROF PAPER 247 1953 P 98
Reference (Deposit): PAGE LINCOLN R ET AL PEGMATITE INVESTIGATIONS 1942-43 BLACK
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