Commodities
PrimaryFeldspar
SecondaryMica, Beryllium
Commodity typeB
Deposit
Deposit sizeS
WorkingsSurface/Underground
Orebody formLARGE DIKE
Materials
Ore mineralsBeryl, Mica, Microcline
GangueQuartz, Tourmaline
Geology
Host rockQuartzite
Associated rockPegmatite
Tectonic settingSouthern Black Hills
Economic & production
Development statusPast Producer
First production1920
Identification
Deposit ID10104265
MRDS IDSD02450
Alternate namesDakota Feldspar Mine
RegionNA
Data scoreB
Coordinates43.63329, -103.55667
References
U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707ROBERTS, W.L., AND RAPP, GEORGE, 1965, MINERALOGY OF THE BLACK HILLS, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY BULLETIN 18USBM INFO CIRC 7707, P. 186