Commodities
PrimaryLithium
SecondaryMica, Feldspar, Beryllium, Tantalum
Commodity typeB
Deposit
Deposit sizeS
Orebody formIRREGULAR DIKES
Materials
Ore mineralsBeryl, Feldspar, Muscovite, Spodumene
GangueAlbite, Calcite, Holmquistite, Hornblende, Pyrite, Quartz
Geology
Host rockPegmatite
Associated rockPegmatite
Tectonic settingSouthern Black Hills
AlterationThe Core Spodumene Crystals Range From Fresh To Highly Altered.
Economic & production
Development statusPast Producer
First production1917
Identification
Deposit ID10011957
MRDS IDD007164
Alternate namesBull Con, Hector Fraction, Sitting Bull, Gold Star Claims
RegionNA
Data scoreB
Coordinates43.88218, -103.40556
References
U.S. BUREAU OF MINES, 1954, 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