Commodities
PrimaryFeldspar
SecondaryBeryllium
Commodity typeB
Deposit
Deposit sizeS
WorkingsSurface/Underground
Orebody formDIKE
Ore controlMost Of The Feldspar Is In The Core Of The Dike. The Beryl Is Found In A Wall Zone 6 To 8 Ft Thick.
Materials
Ore mineralsBeryl, Feldspar
GangueColumbite, Mica, Quartz, Tantalite, Tourmaline
Geology
Host rockPegmatite
Associated rockPegmatite
Economic & production
Development statusPast Producer
Last production1943
Identification
Deposit ID10012474
MRDS IDD008120
RegionNA
Data scoreB
Coordinates43.72163, -103.6814
References
U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707.ROBERTS, W. L., AND RAPP, GEORGE, 1965, MINERALOGY OF THE BLACK HILLS, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY BULLETIN 18.USGS PP 247, P. 177-178.