South Dakota · Custer County
Past Producer
Big Bull Lode
Custer County, South Dakota, United States
Feldspar
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USGS source ↗
Commodities
Primary
Feldspar
Commodity type
N
Deposit
Deposit size
S
Workings
Surface
Orebody form
BLOW UP
Materials
Ore minerals
Feldspar
Gangue
Tourmaline
Geology
Host rock
Pegmatite
Associated rock
Pegmatite
Tectonic setting
Southern Black Hills
Economic & production
Development status
Past Producer
Identification
Deposit ID
10055718
MRDS ID
SD02442
Region
NA
Data score
C
Coordinates
43.66885, -103.58139
References
U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707