Description
Battle Mountain Gold Company
Commodities
PrimaryGold
SecondaryCopper
Commodity typeM
Deposit
Deposit typesediment-hosted gold in part; pluton-related in part
Model75: Distal disseminated Ag-Au
Deposit sizeM
Orebody formtabular to irregular
Ore controlThere is a combination of lithologic and structural control of the Reona Project orebodies. The Bonanza deposit is in calcareous sediments adjacent to the Virgin Fault. Ore at the Sunshine Deposit is hosted in a sheared contact zone between chert of the Lithotectonic Unit 1 (LU-1) of the Havallah Sequence and granodiorite of Copper Canyon.
Geology
Host rockSandstone,Conglomerate,Shale,Limestone,Chert,Granodiorite · "Battle Formation", "Harmony Formation", "LU-1 of the Havallah Sequence", "Granodiorite of Copper Canyon"
StructureGolconda Thrust fault; Willow Creek Thrust fault, Virgin Fault.
Tectonic settingThe Battle Mountain Mining District has been affected by two major thrust-faulting events: the Antler orogeny in late Devonian-early Mississippian, which emplaced rocks of the Roberts Mountain allochthon from the east, and the Golconda thrust during the Permo-Triassic Sonoma orogeny, which emplaced rocks from the west. An autochthonous block of rocks remains at the center of these tectonic events, and it contains the Penn-Perm Battle Formation, Antler Peak Limestone, and Edna Formation, which rocks often form the host rocks for mineralization in many of the Battle Mountain skarn deposits.
AlterationAll rocks have been affected to some degree by contact metamorphism from the associated graniitc intrusions. The Copper Canyon granodiorite
Economic & production
Development statusProducer
Production years1994-2004
First production1994
Last production2004
Discovery year1990
Identification
Deposit ID10310321
MRDS IDMP90060
Alternate namesBonanza Deposit, South Canyon Deposit, Sunshine Deposit, Midas pit (new name for South Canyon and Bonanza pits), part of the Fortitude Complex, part of the Battle Mountain Complex, part of the Phoenix Project
RegionNA
Data scoreB
Coordinates40.5369, -117.1472
References
California Mining Journal, Dec., 1992Long, 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.Doebrich, Jeff, 1995, Geology and Mineral Deposits of the Antler Peak 7.5-minute quadrangle, Lander County, Nevada, NBMG Bull 109, 44 p.Denver Mining Record, 10/19/94Northern Miner, 10/17/94.NBMG MI-1994-2003.Geological Society of Nevada, 1999, Geology and Gold Mineralization of the Buffalo Valley Area, Northwestern Battle Mountain Trend; GSN Special Publication No. 31, 1999 Fall field trip Guidebook.Wendt, Clancy, 2004, Technical Report on the? ICBM/COPPER BASIN Property, Lander and Humboldt Counties, Nevada, Staccato Gold website, : http://www.staccatogold.com/i/pdf/icbm-43-101.pdf