South Dakota · Custer County
Occurrence
Ixl Fraction
Custer County, South Dakota, United States
Feldspar
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USGS source ↗
Commodities
Primary
Feldspar
Commodity type
N
Deposit
Deposit size
N
Workings
Surface
Materials
Ore minerals
Feldspar
Gangue
Mica, Quartz, Tourmaline
Geology
Host rock
Schist · Schist
Associated rock
Pegmatite · Pegmatite
Economic & production
Development status
Occurrence
Identification
Deposit ID
10055694
MRDS ID
SD02313
Region
NA
Data score
C
Coordinates
43.70607, -103.53778
References
U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707