Description
FMC Corporation
Commodities
PrimaryGold
TertiaryArsenic, Antimony
Commodity typeM
Deposit
Deposit typeSediment-hosted Au
Model173: Sediment-hosted Au
Deposit sizeS
Orebody formThe four major ore zones are all very narrow, tabular, concentrated along pre-existing structures and about 3600 feet long.
Ore controlThere is strong structural control of the thin quartz-calcite veinlets and gold mineralization, which are concentrated along pre-existing NNE-trending faults.
Materials
Ore mineralsGold, Pyrite, Arsenopyrite, Calcite
GangueQuartz
Geology
Host rockLimestone,Shale,Siltstone · "Antelope Valley Limestone", "Nine Mile Shale", "Valmy Formation"
StructureShallow thrust faults, normal faults and folding have affected the rocks in the mine area., The deposit is located in the Birch Creek window through the Roberts Mountains Thrust.
AlterationThe deposit is distinctive in its lack of significant hydrothermal alteration of wall rocks. It lacks intense silicification or clay alteration. Small amounts of pyrite, sericite and clay are common in wallrock adjacent to veins, but are not extensively developed.
Economic & production
Development statusPast Producer
Production years1986-1989
First production1986
Last production1989
Discovery year1980
Identification
Deposit ID10310547
MRDS IDW700418
Alternate namesDry Canyon Deposit, Quito Mine
RegionNA
Data scoreA
Coordinates39.3847, -117.0918
References
NBMG Mining District File 149, numerous press clippings 1985-1987Droste, K.J., et al., 1988, "The Austin Gold Venture", In Bulk Mineable Precious Metals Deposits of the Western U.S., GSN. Symposium.Bonham, H.F., 1986, NBMG Map 91.Bonham, H.F., 1988, in NBMG MI-1987.NBMG, 1994, MI-1993NBMG, 1995, MI-1994Inspiration Resources 1986-1989 SEC Form 10KInspiration Mines Inc., 1985, Plan of Operation for the Austin Gold Venture, Lander County, NV.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.USFS memoranda, 2001.STAFF, 1988, DIRECTORY OF NEVADA MINE OPERATIONS ACTIVE DURING CALENDAR YEAR 1987: NEVADA DIVISION OF MINE INSPECTION, 84 P