Commodities
PrimaryGold, Silver
TertiaryLead, Copper
Commodity typeM
Deposit
Deposit typevolcanic-hosted disseminated
Model150: Epithermal vein, Comstock
Deposit sizeS
Orebody formdisseminated; lode; tabular; vein/shear zones
Ore controlmineralized faults or veins in the rhyolite
Materials
Ore mineralsPyrite, Gold, Cerargyrite, Limonite, Chalcocite, Galena
GangueQuartz, Calcite, Limonite, Alunite
Geology
Host rockAsh-Flow Tuff,Rhyolite
Associated rockQuartzite,Mica Schist,Limestone,Shale,Basalt,Quartz Latite
StructureRegional 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 settingcontinental magmatic arc
Alterationoxidation, silicification
Economic & production
Development statusProducer
Identification
Deposit ID10310374
MRDS IDM242413
Alternate namesBonanza Mountain, Bullfrog, Montgomery-Shoshone, North Extension, Phase IV, Phase V, Polaris, Southwest Extension
RegionNA
Data scoreA
Coordinates36.8794, -116.85395
References
NBMG Map 84, 1983, Active Mines and Oil Fields.Division of Mine Inspection, Dec. 1983, Directory of Nevada Mine Operations Active During Calendar Year 1983.Kral, V E, 1951, Mineral Resources of Nye Co, Nevada; Nev. Univ. Bull, v. 45, no 3, Geology and Mining Ser. 50, p. 29Ransome, F.L., Emmons, W. H., and Garrey, G. H. 1910, Geology and Ore Deposits of the Bullfrog Dist. Nev. USGS Bull. 407, 130 p.Koschmann, A H and Bergendahl, M H, 1968, Principal Gold Producing Districts of the U.S.: USGS Prof. Paper 610, p. 191-192Ball, S H, 1907, Reconn. SE Nevada and E Calif: USGS Bull. 308, p 176-182NBMG, 1994, MI-1993-2004Nevada Division of Minerals, 1994Long, 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.