Hollister gold Deposit

Elko County, Nevada, United States

GoldSilverMercuryCopperZincLeadAntimony

⌖ Show on map USGS source ↗

Description

United States Steel Corp.

Commodities

PrimaryGold, Silver, Mercury

TertiaryCopper, Zinc, Lead, Antimony

Commodity typeM

Deposit

Deposit typeHot-spring Au-Ag, fault zone

Model104: Hot-spring Au-Ag

Deposit sizeM

Orebody formbedded

Ore controlThe gold is closely related to mercury-bearing sinter and associated silicification that resulted from hot spring activity. The ore is semi-concordant and favors the disconformity between the Valmy Formation and the overlying tuffs and andesite in the lower portion of the volcanic sequence, and fractures in quartzite and argillite of the Valmy Formation. Local gold concentrations are controlled by the intersections of prominent northeast, northwest, and minor east-west striking structures.

Materials

Ore mineralsGold, Chalcedony, Kaolinite, Adularia, Alunite, Montmorillonite, Nontronite, Chlorite, Calcite, Pyrite

GangueQuartz

Geology

Host rockMixed Clastic/Volcanic Rock,Tuff,Andesite,Quartzite,Argillite · Vinnini Formation

Associated rockTuff,Andesite

StructureThe deposit occurs along the northern projection of the Carlin Trend, just south of the Midas Trough.

AlterationThe deposit is affected by silicification, argillization, and propylitization. The ore is generally argillized beneath a barren near surface silica cap. The ore is also locally silicified. Tuffaceous rocks are altered to quartz, chalcedony, kaolinite, adularia, and alunite. The andesite is altered to montmorillonite, nontronite, and chlorite, and is crosscut by fractures which contain silica, pyrite, and adularia.

Economic & production

Development statusProducer

Production years1915-1917; 1929-1943; 1990-PRESENT (1/92)

First production1915

Discovery year1915

Identification

Deposit ID10310531

MRDS IDW700379

Alternate namesButte #2, Clementine, Velvet, Rowena, Ivanhoe deposit, USX West, USX East, Butte #1, USX Mine

RegionNA

Data scoreA

Coordinates41.1149, -116.56177

References

Mining Magazine, March 1988, p. 166.Mining Magazine, January 1989, p. 44.Mining database, November 1991, Mining Journal/Montagu Mining Finance.ERT, an engineering company, 1988, Proposed Ivanhoe/USX Project Environmental Assessment Report.Bonham, 1989, Bulk-mineable Precious-Metal Deposits and Prospects in Nevada, NBMG Map M91.NBMG, 1987, The Nevada Mineral Industry - 1986, NMBG Special Publication MI-1986.NMBG, 1991, The Nevada Mineral Industry - 1990, NBMG Special Publication MI-1990.Hollister, V.F., 1986, unpublished report on the Ivanhoe District.Hollister, V., Hruska,D., Moore, R., 1992, A mine-exposed hot spring deposit and related epithermal gold resources, Economic Geology and the Bulletin of the Society of Economic Geologists, vol. 87,No. 2, Pages 421-424Putnam, Borden, 1990, Fall 1990 field trip guidebook; the Carlin and Cortez trends; comparisons and contrasts; Cortez, Gold Acres and Buckhorn vs Carlin, Post and Ivanhoe, Geological Society of Nevada. Special Publication No.12, 1990Tingley, J.V., and Bentz, J., 1983, NBMG Open File Report 83-10 (includes field reports for Ivanhoe District).Granger, et al., 1957, NBMG Bulletin 54.Bartlett, M.W., et al., 1991, Geology of the Hollister Gold Deposit, Ivanhoe District, Elko County, Nevada, in Raines, G.L., et al., eds., Geology and Ore Deposits of the Great Basin, the Geological Society of Nevada, Reno, p. 957-978.NBMG,1994, MI-1993.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.Great Basin Gold Ltd.,Press Release: December 12, 2005.