Commodities
PrimaryBeryllium, Mica, Tantalum, Feldspar
SecondaryTin
TertiaryLithium
Commodity typeB
Deposit
Deposit sizeS
WorkingsSurface
Orebody formIRREGULAR
Materials
Ore mineralsAlbite, Amblygonite, Beryl, Cassiterite, Muscovite, Spodumene, Tantalite
GangueGraphite, Quartz, Rhodochrosite, Topaz
Geology
Host rockSchist · Schist
Associated rockPegmatite · Pegmatite
AlterationSpodumene Altered To Sericite. Amblygonite Is Altered.
Economic & production
Development statusPast Producer
Identification
Deposit ID10101556
MRDS IDD004781
RegionNA
Data scoreB
Coordinates43.91913, -103.46278
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