Commodities
PrimaryGold
SecondarySilver
TertiaryArsenic, Antimony, Mercury, Barium-Barite, Tungsten
Commodity typeB
Deposit
Deposit typeFAULT ZONE
Model173: Sediment-hosted Au
Deposit sizeS
Orebody formTABULAR
Ore controlOre formation is controlled by NE-trending fault zones and permeability of the host rocks. Near-vertical, east-west, mineralized shear zones.
Materials
Ore mineralsGold
GangueQuartz, Pyrite, Arsenopyrite, Scheelite, Cinnabar, Stibnite, Sphalerite, Chalcopyrite, Tennantite, Tetrahedrite, Pyrrhotite
Geology
Host rockSiltstone,Phyllite,Slate,Quartzite,Marble,Limestone · "Grass Valley Formation", "Boyer Ranch Formation"
Associated rockGranite,Aplite
StructureNE-trending faults, Low-angle thrust faults have emplaced Jurassic limestone and quartzites over the earlier host rocks. Basin and Range normal faulting has produced the north- to northeast-trending horst block that is the Stillwater Range
Tectonic settingBasin and Range
AlterationSILICIFICATION
Economic & production
Development statusProducer
Discovery year1870
Identification
Deposit ID10310504
MRDS IDM242934
Alternate namesColorado Deposit, Reed Deposit, South Mouth Deposit, Paperweight-Half Moon, Hamburger Hill
RegionNA
Data scoreB
Coordinates39.80407, -118.20403
References
Tenneco Minerals Company, 1989, Draft Environmental Assessment for the Tenneco Minerals Company Fondaway Canyon ProjectNBMG MI-1984-MI-1997Press Clippings, 1983-1990Summex Mining Company Press Release, 4/96Long, 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.Strachan, Donald, 2003, Proposals to upgrade South Pit, Deep Dive, Half Moon, Paperweight, and Hamburger Hill to a measured gold resource Fondaway Canyon, Churchill County, Nevada; technical report available online at:http://www.royalstandardminerals.com/sites/default/files/shared/Fondaway-NI43-101.pdf