Description
Duncan Mckercher And Others (Claimants)
Commodities
PrimarySilver, Gold
SecondaryCopper, Lead
TertiaryZinc, Manganese
Commodity typeM
Deposit
Deposit typeVein
Model85: Polymetallic veins
Deposit sizeS
WorkingsUnderground
Ore controlMetalliferous Veins Controlled By Regional Rectangular Fracture System In Granites And By Local Radial Fracture System Associated With Emplacement Of Chicago Basin Stock.
Materials
Ore mineralsArgentite, Chalcopyrite, Silver, Sphalerite, Tetrahedrite
GangueFluorite, Quartz, Rhodochrosite
Geology
Host rockQuartz Monzonite,Granite · Eolus Granite
Associated rockQuartz Monzonite,Rhyolite,Granite · Eolus Granite;Intrusive Bodies And Related Rocks (Younger And Older Bodies Of Chicago Basin Stock)
StructureSan Juan Uplift, San Juan Basin, San Juan Volcanic Field, Needle Mtns Uplift, Chicago Basin Stock, Eolus Batholith, Trimble Stock
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
Economic & production
Development statusPast Producer
Identification
Deposit ID10014084
MRDS IDD010708
Alternate namesSouthern Corss, MS 4520, E.A.K., MS 4520, Patented Claims: Little Jim, MS 4520
RegionNA
Data scoreB
Coordinates37.61084, -107.60841
References
SCHMITT, L.J., AND RAYMOND, W.H., 1977, GEOLOGY AND MINERAL DEPOSITS OF THE NEEDLE MOUNTAINS DISTRICT, SOUTH-WESTERN COLORADO: USGS BULL. 1434, 40 P.STEVEN, T.A., AND OTHERS, 1969, MINERAL RESOURCES OF THE SAN JUAN PRIMITIVE AREA, COLORADO: USGS BULL. 1261-F, P. 30-32, 55-67, 96. 160-163.CROSS, WHITMAN, AND OTHERS, 1905, DESCRIPTION OF THE NEEDLE MOUNTAINS QUADRANGLE, COLORADO: USGS FOLIO 131.BLM MINERAL SURVEY MS 4520