Mine detail: Barrick Bullfrog Gold Mine

Previously called 'Bonanza MountainBullfrogMontgomery-ShoshoneNorth ExtensionPhase IVPhase VPolarisSouthwest Extension'

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Location

Lat / long: 36.8794, -116.85395

Resource(M)

Primary: Gold, Silver
Tertiary: Lead, Copper
Ore: Pyrite, Gold, Cerargyrite, Limonite, Chalcocite, Galena
Gangue: Quartz, Calcite, Limonite, Alunite
Orebody form: disseminated; lode; tabular; vein/shear zones

Production

Operation type: Surface-Underground
Deposit type: volcanic-hosted disseminated
Production size: Small
Development status: Producer

Geology

Host type:Ash-Flow Tuff,Rhyolite
Associated type:Quartzite,Mica Schist,Limestone,Shale,Basalt,Quartz Latite
Structure:Regional structures are normal faults trending N to NW, blocks tilted east, the E-W-trending Bullfrog fault with dip greater than 20 degrees north., Veins strike N-S, dip greater than 50 deg; E-W, dip 20 deg N.
Tectonic:continental magmatic arc
Alteration processes:oxidation, silicification

References

MRDSM242413
DEP10310374
Reference{Deposit:: NBMG Map 84, 1983, Active Mines and Oil Fields.}{Deposit:: Division of Mine Inspection, Dec. 1983, Directory of Nevada Mine Operations Active During Calendar Year 1983.}{Deposit:: Kral, V E, 1951, Mineral Resources of Nye Co, Nevada; Nev. Univ. Bull, v. 45, no 3, Geology and Mining Ser. 50, p. 29}{Deposit:: Ransome, F.L., Emmons, W. H., and Garrey, G. H. 1910, Geology and Ore Deposits of the Bullfrog Dist. Nev. USGS Bull. 407, 130 p.}{Deposit:: Koschmann, A H and Bergendahl, M H, 1968, Principal Gold Producing Districts of the U.S.: USGS Prof. Paper 610, p. 191-192}{Deposit:: Ball, S H, 1907, Reconn. SE Nevada and E Calif: USGS Bull. 308, p 176-182}{Deposit:: NBMG, 1994, MI-1993-2004}{Deposit:: Nevada Division of Minerals, 1994}{Deposit:: 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.}
ReporterLaPointe, D.D., Schruben, Paul G.