Ore controlFault Zone At The Contact Between Shales And Underlying Carbonates. Faulting Is Parallel To Bedding.
Materials
GangueCalcite, Kaolinite, Quartz
Geology
Host rockLimestone · Comus Formation
Associated rockMafic Intrusive Rock · Felsic Dikes
StructureNortheasterly "Pinson Trend". Deposit Is In The Overturned (West) Limb Of A N30e-Striking Anticline., In Addition To The N30e Ore-Bearing Fault, There Are Several Sets Of Joints, The Most Prominent Of Which Strikes N34e And Dips 13 Nw.
AlterationDecalcification And Bleaching Is The Most Prevalent In The Ore Zone. This Alteration Extends For Short Distances Into The Barren Wall Rocks. Within This Zone Of Decalcification There Are Localized Areas Of Jasperoidal Silicification And Kaolinization. Limonitic Silicification Occurs In The Rare High-Grade Areas Of The Deposit.
Economic & production
Development statusProducer
Production years1989 - 1992
First production1989
Last production1992
Discovery year1971
Identification
Deposit ID10055096
MRDS IDRE00040
RegionNA
Data scoreB
Coordinates41.12517, -117.27429
References
MRDS QUESTIONNAIRE COMPLETED BY JOSEPH FOSTER, MINE GEOLOGIST, PINSON MINING COMPANY, MARCH, 1992