Nevada · Humboldt County
Past Producer

Preble Mine

Humboldt County, Nevada, United States
GoldBarium-BariteCopperMercuryAntimony
⌖ Show on mapUSGS source ↗
Description

Whit DelaMare.

Commodities
PrimaryGold
TertiaryBarium-Barite, Copper, Mercury, Antimony
Commodity typeB
Deposit
Deposit typereplacement/fault zone; sediment-hosted disseminated gold
Model173: Sediment-hosted Au
Deposit sizeS
Orebody formtabular
Ore controlMineralization at Preble is largely confined to a broad NE-trending zone of shearing, brecciation, and silicification that roughly parallels bedding, dipping 30 degrees southeast. Mineralization is evenly disseminated in the zone, with grades terminating abruptly at the hanging wall and footwall of the shear zone.
Materials
Ore mineralsGold
Geology
Host rockPhyllite,Carbonate,Shale · "Preble Formation", "Comus Formation"
Associated rockVolcanic Rock (Aphanitic)
AlterationRocks have been subjected to a moderate amount of silicification (jasperiod development), but not as much as at the Pinson Mine. A small sill along the footwall shear in the center of the deposit has been argillically altered.
Economic & production
Development statusPast Producer
Production years1985-1990
First production1985
Last production1990
Discovery year1972
Identification
Deposit ID10310314
MRDS IDM232748
RegionNA
Data scoreB
Coordinates40.99795, -117.39207
References
Decker, D.J., 1974; Mineral resource ownership investigation, Nevada Garvey Ranch, Humboldt and Elko Counties,Nevada: Unpublished report on file at NBMG.Nev. Min Assn. Bull. Sept., 1979, Consortium Budgets $14 Million to Open Pinson Gold Mine.The Northern Miner Newspaper, Jan. 3, 1980, "Lacanex Supervising Cordex I Syndicate Feasibility Study."Garside, L.J., 1984, NBMG Field Examination 19 June, 1984, and sample analysis.Crone, W.R., 1982, M.S. Thesis, Univ. Nev. Reno.Crone, W.R., Larsen, T.T., Carpenter, R.H., Chao, T.T., and Sanzolone, R.F., 1984, Jour. of Geochem. Explor., vol. 20, p. 161-178.USGS, 1974, Map GQ-1174.The Mining Record, Aug. 29, 1984.Minesearch Annual, 1984-85, Vol VII, p. 362-367, Metals Economics Group, Boulder, Co.Numerous Clippings, 1982-1984.Geol. Soc. Nevada, 1987, Bulk Mineable Precious Metals Symposium.Bonham, H.F., 1986, NBMG Map 91.NBMG MI-1987, MI-1994-2003.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.Geological Society of Nevada, 1989, Geology & Gold Deposits of the Osgood Mtns, NV: Pinson; Preble; Chimney Creek, 104 p.Geological Society of Nevada, 2000, Geology & Ore Deposits of the Getchell Region, Humboldt County, NV: Twin Creeks, Getchell, Pinson, & Preble Mines; FT09, 153 p.Oral History of John Livermore, Online Archive of California.