Commodities
PrimaryFeldspar
TertiaryBeryllium
Commodity typeB
Deposit
Deposit sizeS
WorkingsSurface
Materials
Ore mineralsBeryl
GangueQuartz, Tourmaline
Geology
Host rockSchist
Associated rockPegmatite
Economic & production
Development statusPast Producer
Identification
Deposit ID10012488
MRDS IDD008139
RegionNA
Data scoreB
Coordinates43.6219, -103.5275
References
U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707.FISHER, D. JEROME, 1945, PRELIMINARY REPORT ON THE MINERALOGY OF SOME PEGMATITES NEAR CUSTER, SOUTH DAKOTA GEOLOGICAL SURVEY REPORT OF INVESTIGATIONS 50.USBM INFO CIRC 7707.