Mine detail: Ruby Reef Claims

Previously called 'Ruby Reef No. 1'

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Location

Lat / long:

43.69302, -103.60917

Resource(N)

Primary:	Mica
Ore:	Mica
Gangue:	Oligoclase, Quartz, Sillimanite, Tourmaline
Orebody form:	LENTICULAR TO TABULAR
Discovery year:	1943

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
First production started:	1943
Last production ended:	1944

Geology

Host type:	Quartzite,Mica Schist
Associated type:	Gneiss,Pegmatite

References

MRDS	D008095
DEP	10012455
Reference	{Deposit:: U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707.}{Deposit:: USGS PP 247, P. 186-188.}{Deposit:: ROBERTS, W.L., AND RAPP, GEORGE, 1965, MINERALOGY OF THE BLACK HILLS: SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY BULLETIN 18.}{Production:: USGS PP 247, P. 186.}
Reporter	Barari, Rachel A.