Commodities
PrimaryFeldspar, Mica
SecondaryBeryllium
TertiaryTantalum, Niobium (Columbium)
Commodity typeB
Deposit
Deposit sizeS
WorkingsSurface/Underground
Orebody formDIKE IN AN ANTICLINAL FOLD
Materials
Ore mineralsBeryl, Feldspar, Muscovite
GangueQuartz
Geology
Host rockPegmatite
Associated rockPegmatite · Pegmatite Dike
StructureAnticlinal Fold
Economic & production
Development statusPast Producer
Identification
Deposit ID10104221
MRDS IDSD02136
RegionNA
Data scoreB
Coordinates43.79468, -103.64335
References
US BUREAU OF MINES, 1955 , BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2 , BUREAU OF MINES INFORMATION CIRCULAR 7707US BUREAU OF MINES, 1955 , BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2 , BUREAU OF MINES INFORMATION CIRCULAR 7707 .