Mine detail: Roby Mica Mine

Previously called 'Tim Twiggs Mine'

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Location

Lat / long:

36.04065, -82.12817

Resource(N)

Primary:	Mica
Ore:	Mica
Gangue:	Chlorite, Pyrite
Orebody form:	IRREGULAR, LENS

Production

Operation type:	Unknown
Production size:	Yes
Development status:	Past Producer
Production years:	1910, 1920, 1942, 1956-1957

Geology

Host type:	Gneiss
Structure:	Pegmatite Is Concordant With Wall Rock Structure
Alteration processes:	Weathered (10 Ft)

References

MRDS	K000844
DEP	10025169
Reference	{Deposit:: LESURE, F.G., 1968, MICA DEPOSITS OF THE BLUE RIDGE IN NORTH CAROLINA: U.S. GEOLOGICAL SURVEY PROF. PAPER 577, P. 48-4}{Deposit:: 1968 COMPILE LESURE, F.G}{Production:: LESURE, F.G., 1968, U.S.G.S. PROF. PAPER 577}
Reporter	Fagan, James M.