Commodities
PrimaryGold
SecondarySilver, Copper, Lead, Zinc
TertiaryAntimony
Commodity typeM
Deposit
Deposit typeStockwork
Model173: Sediment-hosted Au
Deposit sizeM
Orebody formStockwork
Ore controlOre is localized on a north-striking, high angle fault developed along a competency contrast between massive Devonian Bootstrap carbonates and platform-slope talus debris within the Bootstrap Llimestone. West-dipping, late Cretaceous to Tertiary dikes intruded along the fault. Later tectonism accentuated initial structural breaks, enhancing permeability and porosity. Mineralization is strongly controlled by strata (particularly at Tara) however the dominant control is structural.
Materials
Ore mineralsGold, Quartz
GangueClay
Geology
Host rockMudstone,Siltstone,Quartz Latite,Dacite · Bootstrap Limestone
StructureRoberts Mountains Thrust Fault, A complex fault zone is exposed along the crest of the Bootstrap window. Steep north trending faults have been intruded by dikes.
AlterationHost rocks have been affected by pervasive hydrothermal alteration: sericitization, silicification, and argillization. Dikes are sericitized. Within carbonate sediments, cherty replacement silicification along faults and joints diminishes laterally in intensity and grades into argillic alteration. Argillized zones grade into fresh country rock.
Economic & production
Development statusProducer
Production years1918; 1958-1959; 1974-1984; 1987
First production1918
Discovery year1914
Identification
Deposit ID10310520
MRDS IDM232818
Alternate namesAntimony Pete (originally), Antimony Ike
RegionNA
Data scoreB
Coordinates41.01879, -116.41704
References
Smith, R.M. (1976-56) Mineral Resources of Elko Co. Nev, USGS Open-File ReportLawrence (1963) Antimony Deposits of Nev., NBMG Bull. 61.State Inspector of Mines (1981) Directory of Nevada Mine Operations Active In 1980Bonham, H.F., 1986, Bulk-Mineable Precious-Metal Deposits and Prospects In Nevada, NBMG Map 91.NBMG, 1987, The Nevada Mineral Industry 1986, NBMG Special Publication MI-1986Baker, E.D., 1991, Geology and Ore Deposits of the Bootstrap Subdistrict, Elko County, Nevada, in Geology And Ore Deposits of the Great Basin, Raines, G.L., et al., eds., the Geological Society of Nevada, Reno, p. 619-623.NBMG, 1991, The Nevada Mineral Industry 1990, NBMG Special Publication MI-1990.Newmont Gold 1985 SEC Form 10KE/MJ 8/1986 p. 41Geology and Ore Deposits of Northeastern Nevada; Geological Society of Nevada, 1997 Spring Field Trip Guidebook, Special Publication No. 25, p. 55.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.