Mine detail: Montana - Tonopah Mining Co.

Previously called 'Montana - Tonopah ShaftSilvertop Shaft'

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Location

Lat / long:

38.07188, -117.22592

Resource(M)

Primary:	Silver
Secondary:	Gold
Ore:	Polybasite, Stephanite
Gangue:	Calcite, Rhodochrosite

Production

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

Geology

Host rock:	West End Rhyolite;Mizpah Trachyte;Tonopah Formation
Host type:	Rhyolite
Structure:	Mizpah Fault (Striking N55w, Dipping 29 Ne)
Alteration processes:	Bleaching, Silicification

References

MRDS	M231774
DEP	10044368
Reference	{Deposit:: SPURR, J.E., 1905, GEOLOGY OF THE TONOPAH MINING DISTRICT: USGS PROF. PAPER 42, P. 168-176}{Deposit:: CARPENTER, JA, ET AL, 1953, HISTORY OF FIFTY YEARS OF MINING AT TONOPAH: NBMG BULL. 51}{Deposit:: NOLAN, TB, 1935, UNDERGROUND GEOL. OF THE TONOPAH MIN. DIST.: NBMG BULL. 23}{Production:: CARPENTER, ET AL, 1953, P. 149}
Reporter	Wong, George (Roberts, Ralph), La Pointe, D.D. (Tingley, J.V.)