Description
Robison Brothers
Commodities
PrimaryGold
SecondarySilver
Commodity typeM
Deposit
Deposit typePolymetallic vein; peraluminous granite-related
Model150: Epithermal vein, Comstock
Deposit sizeY
Orebody formlenticular
Ore controlOre is controlled by lithology, occurring in quartz lenses associated with the pegmatitic phase of alaskite. Ore is apparently also controlled by a NNW-trending structure.
Materials
Ore mineralsGold, Pyrite, Galena
GangueQuartz
Geology
Host rockLimestone,Alkali-Granite (Alaskite),Pegmatite
Associated rockSlate,Quartzite,Diorite,Rhyolite,Andesite,Basalt,Dacite,Mixed Clastic/Volcanic Rock,Sedimentary Rock,Coal,Alluvium
StructureNW-, EW-, and NS-trending faults., The Silver Peak Mountain Range lies in the southern Great Basin within the Walker Lane structural\ncorridor. NW-SE BELT OF FOLDED, FAULTED TERTIARY SEDS E OF SIERRAS, S TO MOJAVE, N TO N. NEVADA
Tectonic settingJUR-CRET UPLIFT, TERT VOLCANISM
AlterationSecondary sulfides have formed acompanying the decomposition of diorite.
Economic & production
Development statusProducer
First production1867
Discovery year1864
Identification
Deposit ID10310539
MRDS IDW002901
Alternate namesDrinkwater pit, Gold Wedge A pit, Gold Wedge B pit, Gold Wedge C pit, Mary-LC pit, Gordon Brodie pit, Mary-Liz pit, Unnamed pit, old Mary - Drinkwater Underground Mine
RegionNA
Data scoreA
Coordinates37.79411, -117.70509
References
Spurr, J E, 1906, Ore Deposits of the Silver Peak Quadrangle, Nevada: USGS Prof. Paper 55, 174 p.Nolan, T. B., 1936, Nonferrous-Metal Deposits; USGS Bull. 871, p. 60Koschmann, A H, and Bergendahl, M H, 1968, Principal Gold Producing Districts of the United States; USGS Prof. Paper 610Lincoln, F C, 1923, Mining Districts and Mineral Resources of Nevada: Reno p. 80-81.Amer. Mines (1996), 1995 thru Amer. Mines (2001), 2000BLM Claims Microfiche, 1999Goldfield Land Status, 1978NBMG MI-89 thru MI-99.Environmental Assessment, 1996Amer. Mines (1991-92), 1991 thru Amer. Mines (2001), 2000.Quarterly Rep. 5/15/01www.golden-phoenix.com; NBMG Bull 78Long, 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.2005 report on the Mineral Ridge Mine at http://www.golden-phoenix.com/documents/MRPDF.pdfGolden Phoenix Minerals, Inc. press release, 12/1/2004