The Mountain Rose Mine is a feldspar, beryllium, and mica mine located in Custer county, South Dakota at an elevation of 5,000 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: 5,000 Feet (1,524 Meters)
Commodity: Feldspar, Beryllium, Mica
Lat, Long: 43.62111, -103.60306
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.
Mountain Rose Mine MRDS details
Site Name
Primary: Mountain Rose Mine
Secondary: Mountain Queen Mine
Secondary: Lofton Mine
Commodity
Primary: Feldspar
Primary: Beryllium
Primary: Mica
Location
State: South Dakota
County: Custer
District: Pringle District
Land Status
Administrative Organization: Black Hills
Holdings
Not available
Workings
Type: Surface
Ownership
Owner Name: Mrs. Laura Lofton
Home Office: Pringle, S.D.
Owner Name: Ray Mason Of Pringle, S.D. And S. T. Gamber Of Custer, S.D.
Production
Year: 1942
Time Period: -1942
Year: 1942
Time Period: -1942
Year: 1942
Time Period: -1942
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year Last Production: 1945
Discovery Year: 1932
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: DIKE
Structure
Not available
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
Analytical Data: MATERIAL FROM THE MAIN CUT AVERAGED 0.5% BE, NEARLY 22% FLD, AND 2.5% MIC2.
Materials
Ore: Beryl
Ore: Muscovite
Ore: Feldspar
Gangue: Tourmaline
Gangue: Quartz
Gangue: Chrysoberyl
Comments
Comment (Workings): THE MAIN CUT NARROWS TO 5 FT AND IS 6 TO 30 FT DEEP. SMALLER CUTS HAVE BEEN MADE IN THE OTHER 2 OUTCROPS.
Comment (Deposit): AVERAGE STRIKE AND DIP. 20 ACRE UNPATENTED CLAIM.
References
Reference (Production): USBM INFO CIRC 7707, P. 162-163.
Reference (Deposit): U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, 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.
Reference (Deposit): USGS PP 247, P. 144.
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