Commodities
PrimaryFeldspar, Mica, Beryllium
Commodity typeB
Deposit
Deposit sizeS
WorkingsSurface
Materials
Ore mineralsBeryl, Feldspar, Mica
GangueAndalusite, Cleavelandite, Muscovite, Sillimanite, Tourmaline, Triphylite
Geology
Host rockQuartzite
Associated rockPegmatite
Economic & production
Development statusPast Producer
Last production1940
Identification
Deposit ID10055780
MRDS IDSD02532
Alternate namesTinsley Mine
RegionNA
Data scoreB
Coordinates43.7469, -103.51667
References
USBM INFO CIRC 7707, P.SDSMT BULL 18USGS PP 247, P. 114-118.USBM INFO CIRC 7707, P. 103; USGS PP 247, P. 115