Mine detail: Griffy Mn Prospect

Previously called 'Horse Mountain'

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Location

Lat / long:

30.8352, -98.67589

Resource(M)

Primary:	Manganese
Ore:	Piedmontite, Spessartite
Gangue:	Feldspar, Magnetite, Quartz
Orebody form:	LENSE

Production

Operation type:	Unknown
Deposit type:	Stratabound
Production size:	None
Development status:	Occurrence

Geology

Host rock:	Valley Spring Gneiss
Host type:	Gneiss
Alteration processes:	Exposures Of Mn Silicates Oxidized To Black Oxides.

References

MRDS	TC40193
DEP	10065156
Reference	{Deposit:: PAIGE, S., 1912, GEOLOGIC ATLAS OF THE UNITED STATES LLANO-BURNET FOLIO, TEXAS: USGS FOLIO 183, 16 P}{Other Database:: CIMRI}
Reporter	Long, Keith R.