South Dakota · Custer County
Past Producer
Evergreen Group
Custer County, South Dakota, United States
Beryllium
Feldspar
⌖ Show on map
USGS source ↗
Commodities
Primary
Beryllium, Feldspar
Commodity type
B
Deposit
Deposit size
S
Orebody form
DIKES
Materials
Ore minerals
Beryl, Feldspar, Microcline
Gangue
Quartz
Geology
Host rock
Pegmatite
Associated rock
Pegmatite
Tectonic setting
Southern Black Hills
Economic & production
Development status
Past Producer
Identification
Deposit ID
10104266
MRDS ID
SD02460
Alternate names
Evergreen No. 1
Region
NA
Data score
B
Coordinates
43.73079, -103.58945
References
U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707