Mine detail: Gold Coin Mine

Previously called 'Jumbo Extension Mining Co. Ground'

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Location

Lat / long:

37.74467, -117.18813

Resource(M)

Primary:	Gold, Silver
Tertiary:	Tellurium
Ore:	Cerargyrite, Gold
Gangue:	Alunite, Limonite, Quartz
Orebody form:	TABULAR

Production

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

Geology

Host type:	Andesite
Associated rock:	Milltown Andesite
Associated type:	Andesite
Alteration processes:	Silicification, Alunitization

References

MRDS	M241908
DEP	10104102
Reference	{Deposit:: RANSOME, F.L., 1909, USGS PP 66, P. 110, P. 250.}{Deposit:: NBMG REPORT 19, P. 65-66}{Production:: RANSOME, F.L., 1909, USGS PP 66 P. 250.}
Reporter	La Pointe, D.D. (Tingley, J.V.)