Ore controlThe Mica Is Found Near The Walls In A Border 1 Ft Thick.
Materials
Ore mineralsBeryl, Feldspar, Muscovite
GangueAlbite, Quartz
Geology
Host rockMica Schist
Associated rockGneiss,Pegmatite
Economic & production
Development statusPast Producer
First production1936
Discovery year1935
Identification
Deposit ID10012463
MRDS IDD008106
RegionNA
Data scoreB
Coordinates43.72052, -103.60139
References
U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707.USGS PP 247, P. 212-214.USGS PP 247, P. 214.