Mine detail: Bootstrap-Capstone-Tara Gold Mine

Previously called 'Antimony Pete (originally)Antimony Ike'

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Location

Lat / long:

41.01879, -116.41704

Resource(M)

Primary:	Gold
Secondary:	Silver, Copper, Lead, Zinc
Tertiary:	Antimony
Ore:	Gold, Quartz
Gangue:	Clay
Orebody form:	Stockwork
Discovery year:	1914

Production

Operation type:	Surface-Underground
Deposit type:	Stockwork
Production size:	Medium
Development status:	Producer
Production years:	1918; 1958-1959; 1974-1984; 1987
First production started:	1918

Geology

Host rock:	Bootstrap Limestone
Host type:	Mudstone,Siltstone,Quartz Latite,Dacite
Structure:	Roberts 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.
Alteration processes:	Host 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.

References

MRDS	M232818
DEP	10310520
Reference	{Deposit:: Smith, R.M. (1976-56) Mineral Resources of Elko Co. Nev, USGS Open-File Report}{Deposit:: Lawrence (1963) Antimony Deposits of Nev., NBMG Bull. 61.}{Deposit:: State Inspector of Mines (1981) Directory of Nevada Mine Operations Active In 1980}{Deposit:: Bonham, H.F., 1986, Bulk-Mineable Precious-Metal Deposits and Prospects In Nevada, NBMG Map 91.}{Deposit:: NBMG, 1987, The Nevada Mineral Industry 1986, NBMG Special Publication MI-1986}{Deposit:: Baker, 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.}{Deposit:: NBMG, 1991, The Nevada Mineral Industry 1990, NBMG Special Publication MI-1990.}{Deposit:: Newmont Gold 1985 SEC Form 10K}{Deposit:: E/MJ 8/1986 p. 41}{Deposit:: Geology and Ore Deposits of Northeastern Nevada; Geological Society of Nevada, 1997 Spring Field Trip Guidebook, Special Publication No. 25, p. 55.}{Deposit:: 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.}
Reporter	LaPointe, D.D., Schruben, Paul G.