Commodities
PrimarySilver
SecondaryCopper
Commodity typeM
Deposit
Deposit typeVein
Model85: Polymetallic veins
Deposit sizeN
Ore controlProbable Fault Zone Cutting Gneiss
Materials
Ore mineralsPyrite
GangueLimonite, Quartz
Geology
Host rockGneiss · Twilight Gneiss
Associated rockMonzonite,Gabbro · Electra Lake Gabbro;Monzonite Porphyry
StructureSan Juan Uplift, Needle Mtns Uplift
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
AlterationFe Oxidation
Economic & production
Development statusOccurrence
Identification
Deposit ID10014201
MRDS IDD010870
RegionNA
Data scoreC
Coordinates37.61668, -107.80564
References
SCOTT, D.C., 1983, MINERAL INVESTIGATION OF THE WEST NEEDLE WILDERNESS STUDY AREA AND THE BLM WEST NEEDLE CONTIGUOUS WILDERNESS STUDY AREA,LA PLATA AND SAN JUAN COUNTIES, COLORADO: USBM MLA 35-83, P. 18.BARKER, FRED, 1969, PRECAMBRIAN GEOLOGY OF THE NEEDLE MOUNTAINS, SOUSOUTHWESTERN COLORADO: USGS PROF. PAPER 644-A.CROSS, WHITMAN, AND HOLE, A.D., 1910, DESCRIPTION OF THE ENGINEER MOUNTAIN QUADRANGLE: USGS FOLIO 171.