Commodities
PrimaryBeryllium, Feldspar
SecondaryMica
TertiaryTantalum
Commodity typeB
Deposit
Deposit sizeS
Orebody formLENTICULAR
Ore controlMica Is Found Only In A Contact Between The Pegmatite And The Schist
Materials
Ore mineralsAlbite, Beryl, Mica, Microcline
GangueApatite, Quartz, Spodumene
Geology
Host rockMica Schist
Associated rockPegmatite
Tectonic settingSouthern Black Hills
Economic & production
Development statusPast Producer
Identification
Deposit ID10104268
MRDS IDSD02469
RegionNA
Data scoreB
Coordinates43.71274, -103.69668
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 18