Mine detail: Big Tom Mine

Previously called 'Kem Lode'

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Location

Lat / long:

43.7219, -103.69418

Resource(B)

Primary:	Feldspar
Secondary:	Beryllium, Mica
Ore:	Beryl, Biotite, Muscovite
Gangue:	Albite, Amblygonite, Quartz, Tourmaline
Orebody form:	KNOB

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer

Geology

Host type:	Granite
Associated type:	Pegmatite
Tectonic:	Southern Black Hills

References

MRDS	SD02447
DEP	10055720
Reference	{Deposit:: U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707}{Deposit:: ROBERTS, W.L., AND RAPP, GEORGE, 1965, MINERALOGY OF THE BLACK HILLS, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY BULLETIN 18}
Reporter	Barari, Rachel A.