Beryl Feldspar Mine

The Beryl Feldspar Mine is a feldspar mine located in Custer county, South Dakota at an elevation of 4,400 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

Name: Beryl Feldspar Mine  

State:  South Dakota

County:  Custer

Elevation: 4,400 Feet (1,341 Meters)

Commodity: Feldspar

Lat, Long: 43.85417, -103.36806

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 Feldspar Mine

Beryl Feldspar Mine MRDS details

Site Name

Primary: Beryl Feldspar Mine


Commodity

Primary: Feldspar
Secondary: Beryllium


Location

State: South Dakota
County: Custer
District: Unorganized 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


Holdings

Not available


Workings

Not available


Ownership

Owner Name: Consolidated Feldspar Corp. Of Trenton, Nj


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


Mineral Deposit Model

Not available


Orebody

Not available


Structure

Not available


Alterations

Not available


Rocks

Name: Pegmatite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic

Name: Pegmatite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic


Analytical Data

Not available


Materials

Ore: Beryl
Ore: Feldspar
Gangue: Mica


Comments

Comment (Workings): A LARGE CUT ON SOUTHWEST SIDE OF THE DIKE AND A SMALLER CUT ON THE NORTHEAST SIDE. MOST OF THE FELDSPAR COMES FROM THE SOUTHERN PIT; MOST OF THE BERYL COMES FROM THE NORTHERN PIT.

Comment (Deposit): UNPATENTED LODE CLAIM. 2 ZONES

Comment (Location): JUST SOUTH OF THE COUNTY LINE, EAST OF THE PUT CLAIM AND SOUTH OF THE BIG SMOKE NO. 1


References

Reference (Deposit): USBM INFO CIRC 7707, P. 67-68


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