South Dakota · Custer County
Past Producer
Beryl Feldspar Mine
Custer County, South Dakota, United States
Feldspar
Beryllium
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USGS source ↗
Commodities
Primary
Feldspar
Secondary
Beryllium
Commodity type
B
Deposit
Deposit size
S
Materials
Ore minerals
Beryl, Feldspar
Gangue
Mica
Geology
Host rock
Pegmatite
Associated rock
Pegmatite
Economic & production
Development status
Past Producer
Identification
Deposit ID
10055761
MRDS ID
SD02504
Region
NA
Data score
C
Coordinates
43.85413, -103.36862
References
USBM INFO CIRC 7707, P. 67-68