Mine detail: Buffalo Valley Molybdenum Prospect

Previously called ''

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Location

Lat / long:

40.54237, -117.25129

Resource(M)

Primary:	Copper, Molybdenum
Secondary:	Lead, Zinc
Ore:	Molybdenite, Chalcopyrite, Sphalerite, Galena, Pyrrhotite, Quartz, Diopside, Wollastonite, Garnet, Calcite, Tremolite, Actinolite, Chlorite, Epidote, Sericite, Feldspar, Biotite
Gangue:	Pyrite
Orebody form:	tabular

Production

Operation type:	Surface
Deposit type:	pluton-related, porphyry molybdenum
Production size:	Small
Development status:	Prospect

Geology

Host rock:	Buffalo Valley Stock, Mill Canyon Member of the Havallah Formation
Host type:	Quartz Monzonite,Porphyry,Quartzite,Chert,Shale,Limestone,Sandstone
Associated type:	Ash-Flow Tuff,Alluvium
Structure:	Northwest-striking structural zones are manifested by granodiorite porphyry dikes and larger elongated intrusive bodies, aeromagnetic lineaments, and regional alignment of mineralized areas. They generally are subtle features that trend N 30? to 40? W and that become evident only after regional mapping and compilation and are not as obvious as the north-striking fault zones. Three such northwest-striking zones have been delineated in the Battle Mountain mining district. The Northwest-striking structural zones in the Battle Mountain mining district are apparently pre-Late Cretaceous in age based on the orientation and age of the monzogranite of Trenton Canyon. The northwest zones may coincide with shattered hingelines of large-scale folds associated with a regional Jurassic compressional event (Doebrich and Theodore, 1996).
Alteration processes:	Alteration consists of varying degrees of contact metamorphism and metasomatism associated with the emplacement and hydrothermal alteration of the Buffalo Valley quartz monzonite porphyry stock. Carbonate sedimentary roacks were altered to cacl-silicate hornfels, quartzite, skarn, wollastonite. More pelitic units were altered to biotite hornfels, siliceous hornfels and quartzite. Hydrothermal alteration of the quartz monzonite stock is strong K-feldspar-botite alteration, sericitic, propylitic, and silicification.

References

DEP	10310568
Reference	{Deposit:: Roberts, R.J., and Arnold, D.C., Ore Deposits of the Antler Peak Quadrangle, Humboldt and Lander Counties, Nevada: U.S.G.S. Prof Paper 459-B.}{Deposit:: Long, K.R., DeYoung, J.H., Jr., and Ludington, S.D., 1998, Database of significant deposits of gold, silver, copper, lead, and zinc in the United States; Part A, Database description and analysis; part B, Digital database: U.S. Geological Survey Open-File Report 98-206, 33 p., one 3.5 inch diskette.}{Deposit:: Doebrich, Jeff, 1995, Geology and Mineral Deposits of the Antler Peak n7.5-minute quadrangle, Lander County, Nevada, NBMG Bull 109, 44 p.}{Deposit:: Geological Society of Nevada, 1999, Geology and Gold Mineralization of the Buffalo Valley Area, Northwestern Battle Mountain Trend; GSN Special Publication No. 31, 1999 Fall field trip Guidebook.}{Deposit:: Doebrich, J.L., and Theodore, T.G. (1996) Geologic History of the Battle Mountain Mining District, Nevada, and Regional Controls on the Distribution of Mineral Systems in Coyner, Alan R. and Fahey, Patrick L., editors, Geology and Ore Deposits of the American Cordillera: Geological Society of Nevada Symposium Proceedings, p. 453-483.}{Deposit:: Wendt, Clancy, 2004, Technical Report on the? ICBM/COPPER BASIN Property, Lander and Humboldt Counties, Nevada, Staccato Gold website: http://www.staccatogold.com/i/pdf/icbm-43-101.pdf}{Deposit:: Thomas,T. J., 1985, Geology of the Buffalo Valley Prospect, Lander County, Nevada, M.S. Thesis, University of Nevada, Reno, 118 p.}
Reporter	LaPointe, D.D., Schruben, Paul G.