Description
Pinson Mining Co.
Commodities
PrimaryGold
SecondarySilver
TertiaryMercury, Arsenic, Antimony, Tungsten, Thallium, Barium-Barite, Fluorine-Fluorite, Molybdenum, Nickel, Zinc, Cobalt, Lead
Commodity typeB
Deposit
Model172: Carbonate-hosted Au-Ag
Deposit sizeS
WorkingsSurface
Orebody formTABULAR
Ore controlNe And Nw Striking Extensional Faults Are Structural Controls. Calcareous Argillite And Shale Of The Comus Formation Are The Stratigraphic Controls.
Materials
GangueBarite, Bournonite, Chalcopyrite, Cinnabar, Copper, Covellite, Famatinite, Galena, Geocronite, Iron, Marcasite, Pyrite, Quartz, Realgar, Sphalerite, Stibnite
Geology
Host rockArgillite · Comus Formation
StructureTwo Orientations Of Extensional Faulting Are Recognized. The Dominant Trend Strikes N-S To N30w, Dips 40-65 East, And Mimics The Strike Of The Orebody. The Second Strikes N30-60e, Dips 50-65 Se, And Offsets Quaternary Alluvium.
AlterationHypogene Decalcification, Leaching, Silicification, Kaolinization Are Spatially Associated With Ore. Supergene Weathering Of Pyrite To A Depth Of 200 Ft. Calcite Veining Common Only In Massive, Unmineralized Limestone. Jasperoids Formed Coeval With Au Deposition, But Botryoidal, Chalcedonic Silica Is Younger Than Au Deposition.
Economic & production
Development statusProducer
Production years1987 - PRESENT (12/91)
First production1987
Discovery year1984
Identification
Deposit ID10055089
MRDS IDRE00029
RegionNA
Data scoreB
Coordinates41.13878, -117.25235
References
FOSTER, J.M., AND KRETSCHMER, E.L., 1991, GEOLOGY OF THE MAG DEPOSIT, PINSON MINE, HUMBOLDT COUNTY, NEVADA, IN RAINES, G.L., ET AL, EDS., GEOLOGY AND ORE DEPOSITS OF THE GREAT BASIN, THE GEOLOGICAL SOCIETY OF NEVADA, RENO, P. 845-856