Commodities
PrimaryFeldspar, Mica, Beryllium
TertiaryLithium
Commodity typeB
Deposit
Deposit sizeS
WorkingsSurface/Underground
Orebody formDIKE
Materials
Ore mineralsAlbite, Beryl, Lithiophilite, Muscovite
GangueCleavelandite, Microcline, Quartz, Tourmaline, Triphylite
Geology
Host rockSandstone · Quartz Sandstone And Graywacke
Associated rockPegmatite · Pegmatite
AlterationAlbitization Has Been Prevasive
Economic & production
Development statusPast Producer
First production1937
Identification
Deposit ID10055682
MRDS IDSD02296
RegionNA
Data scoreB
Coordinates43.75246, -103.52806
References
U.S. BUREAU OF MINES, 1954, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 1, BUREAU OF MINES INFORMATION CIRCULAR 7688FISHER, D.J., 1945, PRELIMINARY REPORT ON THE MINERALOGY OF SOME PEGMATITES NEAR CUSTER, SOUTH DAKOTA GEOLOGICAL SURVEY REPORT OF INVESTIGATIONS 50U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707