Beryl Mica Lode

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

Name: Beryl Mica Lode  

State:  South Dakota

County:  Custer

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.


Satelite image of the Beryl Mica Lode

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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