Mine detail: Mule Canyon Mine

Previously called 'Ashcraft ZoneSection 9 ZoneWest ZoneMain ZoneSouth ZoneNorth Zone'

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Location

Lat / long:

40.5999, -116.68393

Resource(M)

Primary:	Silver, Gold
Tertiary:	Lead, Copper, Selenium, Mercury, Antimony, Arsenic, Zinc
Ore:	Electrum, Arsenopyrite, Tetrahedrite, Pyrargyrite, Argentite, Acanthite, Aguilarite, Naumannite, Polybasite, Adularia, Pyrite, Marcasite, Calcite, Zeolite
Gangue:	Quartz
Orebody form:	Orebodies are tabular to lenticular in form, following steeply-dipping NNW structures.
Discovery year:	1986

Production

Operation type:	Surface
Deposit type:	Hot Spring
Production size:	Small
Development status:	Producer

Geology

Host type:	Basalt,Andesite,Tuff,Pyroclastic Rock
Associated rock:	Slaven Chert, Elder Sandstone, Valmy Formation
Structure:	The Mule Canyon deposit is localized along NNW-trending faults that define the western margin of a graben that is part of the Northern Nevada rift zone, developed contemporaneously with Miocene volcanism., The NNW-trending Oregon-Nevada lineament is a narrow, deep-seated crustal flaw exhibited in this area by a diking event that may have provided the feeders for the ore-host volcanic rocks of the deposit.
Tectonic:	INTRACONTINENTAL RIFT?
Alteration processes:	Alteration consists predominantly of pervasive argillization and to a lesser extent, silicification. Alteration is laterally zoned and consists of an intensely altered illite-smectite-quartz-adularia core zone surrounded by an iron-rich smectite-nontronite zone, with an outer propylitic halo of calcite-chlorite-minor smectite alteration.

References

DEP	10310546
Reference	{Deposit:: NBMG MI-1992}{Deposit:: Thomson and others, 1993, Geology and geochemistry of the Mule Canyon gold deposit, Lander County, NV, SME Preprint}{Deposit:: NBMG MI-1995}{Deposit:: NBMG MI-1996}{Deposit:: Santa Fe Pacific Gold, 1996 SEC Form 10K}{Deposit:: Pay Dirt, 2/1/96, 4/1/96}{Deposit:: The Denver Mining Record, 12/11/96}{Deposit:: Engineering and Mining Journal,10/1/95}{Deposit:: Long, K.R., DeYoung, J.H., Jr., and Ludington, S.D., 1998, Significant deposits of gold, silver, copper, lead, and zinc in the United States: U.S. Geological Survey Open-File Report 90-206A, 33 p.; 98-206B. one 3.5 inch diskette.}
Reporter	La Pointe, D. D., Schruben, Paul G.