Commodities
PrimaryGold, Silver
SecondaryLead, Copper
TertiaryMercury, Arsenic, Antimony
Commodity typeM
Deposit
Deposit typeepithermal gold system
Model104: Hot-spring Au-Ag
Deposit sizeN
Orebody formirregular
Ore controlMineralization may be controlled in part by an intrusive contact with metamorphic rocks.
Materials
Ore mineralsGold, Galena, Tennantite
GangueQuartz, Marcasite, Adularia, Calcite, Pyrite
Geology
Host rockRhyolite,Basalt,Hornfels,Metasedimentary Rock,Metavolcanic Rock,Conglomerate
Associated rockGranodiorite
StructureBasin and Range type extensional faulting, Shear zones; range-front fault on west side of the Granite Range.
AlterationA skarn-hornfels zone is developed adjacent to a Cretaceous age granitic intrusive body. Widespread argillic alteration is developed in poorly exposed Mid-Miocene flow-banded rhyolitic volcanic rocks.
Economic & production
Development statusProducer
Discovery year1938
Identification
Deposit ID10310432
MRDS IDM242563
RegionNA
Data scoreB
Coordinates40.84988, -119.50102
References
Jones, R.B., 1984, Field examination, 7-8-84Bonham, H.L., Jr, 1969, NBMG Bull 70,p. 59.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.Margolis, Jacob, Marlowe, Karl, 1996, Middle Miocene, selenide-rich, low-sulfidation, epithermal gold mineralization, Mountain View District, northwestern Nevada; Abstracts with Programs - Geological Society of America, vol.28, no.7, pp.93.NBMG MI-95; MI-96; MI-97 and MI-2002Vista Gold website, 2004Amer. Mines (1998), 1997