Commodities
PrimaryFeldspar, Mica
TertiaryBeryllium
Commodity typeB
Deposit
Deposit sizeS
WorkingsSurface/Underground
Materials
Ore mineralsBeryl, Feldspar, Mica
GangueQuartz, Sillimanite
Geology
Host rockSchist · Schist
Associated rockPegmatite · Pegmatite
AlterationMost Of The Mica Is Badly Stained
Economic & production
Development statusPast Producer
Identification
Deposit ID10104252
MRDS IDSD02282
RegionNA
Data scoreB
Coordinates43.75218, -103.52112
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 18U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707