Description
Cominco American Resources, Inc.
Commodities
PrimarySilver, Gold
Commodity typeM
Deposit
Deposit typeHot Spring
Model150: Epithermal vein, Comstock
Deposit sizeS
Ore controlA Breccia Pipe 30-60 Meters In Diameter Is Developed Below The Ore Zone Sub-Parallel To West Sinter Fault. The Pipe Hosts High-Grade Gold Mineralization And Appears To Be A Primary Conduit For Mineralizing Fluids.
Materials
GangueAlunite, Cristobalite
Geology
Host rockClaystone
StructureTwo Fault Sets Define Local Structure. An Older Set Of Nnw-Striking Normal Faults Are Downthrown On The West. This Fault Set Appears To Be A Primary Control Of Gold Deposition. A Younger Ene-Striking Range Front Fault Set (E.G. Crescent Fault) Offsets The Older Set And Serves To Localize Mineralization At Structural Intersections.
AlterationPervasive Cristobalite-Alunite Associated With Smectite Is Thought To Result From Acid Leaching Of The Deposit During The Last Stages Of Hydrothermal Activity. Lesser Silicification And Possible Decalcification Of Host Rocks.
Economic & production
Development statusProducer
Production years1988-1989
First production1988
Last production1989
Discovery year1985
Identification
Deposit ID10055081
MRDS IDRE00019
RegionNA
Data scoreB
Coordinates40.21713, -116.48148
References
JENNINGS, S., 1991, GEOLOGY OF THE WEST SINTER DEPOSIT AT THE BUCKHORN MINE, EUREKA COUNTY, NEVADA, IN GEOLOGY AND ORE DEPOSITS OF THE GREAT BASIN, SYMPOSIUM PROCEEDINGS, RAINES, G.L., ET AL, EDS., THE GEOLOGICAL SOCIETY OF NEVADA, RENO, P. 947-956JENNINGS, S., 1991, GEOLOGY OF THE WEST SINTER DEPOSIT AT THE BUCKHORN MINE, EUREKA COUNTY, NEVADA, IN GEOLOGY AND ORE DEPOSITS OF THE GREAT BASIN, SYMPOSIUM PROCEEDINGS, RAINES, G.L., ET AL, EDS., THE GEOLOGICAL SOCIETY OF NEVADA, RENO, P. 947-956.