Commodities
PrimaryGold, Silver
SecondaryAntimony, Lead, Zinc, Arsenic
TertiaryMercury, Thallium, Copper, Barium-Barite, Tungsten, Molybdenum
Commodity typeB
Deposit
Model172: Carbonate-hosted Au-Ag
Deposit sizeS
WorkingsSurface
Orebody formTABULAR
Ore controlThe Santa Fe Fault Zone Controls Both Hydrothermal Alteration And Au-Ag Deposition. Au Mineralization Is Entirely Hosted By The Triassic Luning Formation Along The Santa Fe Fault At Its Intersection With The Calvada Fault. All The Significant Gold Concentrations Occur Where The Luning Has Been Fractured Along The Trends Of The Main Faults. Mineralization Is Associated With Either Jasperoid Or Breccia Zones Of Various Kinds.
Materials
Ore mineralsBarite, Boulangerite, Calcite, Chalcedony, Chalcopyrite, Freibergite, Galena, Hematite, Jasper, Kaolinite, Limonite, Marcasite, Miargyrite, Pyrite, Quartz, Realgar, Sericite, Sphalerite, Stibnite
Geology
Host rockLimestone · Luning
Associated rockRhyodacite · Todd Mountain Stock;Mickey Pass Tuff;;
StructureWalker Lane, The Santa Fe Fault Forms The Contact Between The Luning Formation And Mickey Pass Tuff And Consists Of A Breccia Zone Up To 125 Meters Wide.
AlterationArgillization, Decalcification, Silicification, Carbonaceous Alteration, Propylitization. Stearns (1982) Proposes 3 Separate Pulses Of Hydrothermal Alteration Within The Santa Fe Fault Zone. These Events Are 1) Early Quartz-Sericite-Kaolinite Alternation Known As "White Breccia Clasts", 2) Main Stage Carbonaceous, Jasperoid, And Stockwork Veining, And 3) Late Stage Hydrothermal Leaching. Au-Ag Deposition Is Associated With The Second (Main) Event. Jasperoids Are Commonly Very Pyritic.
Economic & production
Development statusProducer
Production years1988-PRESENT (2/92)
First production1988
Discovery year1962
Identification
Deposit ID10047580
MRDS IDM242955
RegionNA
Data scoreA
Coordinates38.59436, -118.14345
References
FINNACA, MIKE, 1987, GSN BULK MINEABLE PRECIOUS METALS SYMPOSIUM FIELD TRIP GUIDEBOOK AND TECHNICAL VOLUME AND GSN 1986 FALL FIELD TRIP GUIDEBOOK.BONHAM, H.F., 1988, NBMG MI-1987.BONHAM, H.F., 1986, NBMG MAP 91.NBMG MINING DISTRICT FILE #207, PRESS CLIPPINGS.STEARNS, S.W., 1982, DISSEMINATED EPITHERMAL PRECIOUS METALS IN THE SANTA FE DISTRICT, MINERAL COUNTY, NV: MS THESIS, STANFORD UNIV.ALBINO, G.V., GILES, D.A., JANNEY, D.W., KURRASCH, D., 1990, GEOLOGY OF THE SANTA FE GOLD DEPOSIT, MINERAL COUNTY, NEVADA, IN BUFFA, R.H., AND COYNER, A.R., EDS., GEOLOGY AND ORE DEPOSITS OF THE GREAT BASIN - FIELD TRIP GUIDEBOOK COMPENDIUM, THE GEOLOGICAL SOCIETY OF NEVADA, RENO, P. 494-502MINING JOURNAL/MONTAGU MINING FINANCE, 8/10/91, MINING DATA BASE.LOWE, N.T., ET AL, PRINCIPAL DEPOSITS OF STRATEGIC AND CRITICAL MINERALS IN NEVADA, USBM INFORMATION CIRCULAR 9035, P. 164.NBMG, 1994, MI-1993CORONA CORP, 1989NEVADA DIVISION OF MINERALS, 1994MINING JOURNAL/MONTAGU MINING FINANCE, 8/10/91, MINING DATA BASE. NBMG MI-1993