Mine detail: Ballard Mine

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Location

Lat / long:

43.79468, -103.64335

Resource(B)

Primary:	Feldspar, Mica
Secondary:	Beryllium
Tertiary:	Tantalum, Niobium (Columbium)
Ore:	Beryl, Feldspar, Muscovite
Gangue:	Quartz
Orebody form:	DIKE IN AN ANTICLINAL FOLD

Production

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

Geology

Host type:	Pegmatite
Associated rock:	Pegmatite Dike
Associated type:	Pegmatite
Structure:	Anticlinal Fold

References

MRDS	SD02136
DEP	10104221
Reference	{Deposit:: US BUREAU OF MINES, 1955 , BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2 , BUREAU OF MINES INFORMATION CIRCULAR 7707}{Production:: US BUREAU OF MINES, 1955 , BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2 , BUREAU OF MINES INFORMATION CIRCULAR 7707 .}
Reporter	Barari, Rachel A.