Colorado · Huerfano County
Occurrence

McMillan Group

Huerfano County, Colorado, United States
GoldSilverTelluriumCopperBismuth
⌖ Show on mapUSGS source ↗
Commodities
PrimaryGold, Silver
TertiaryTellurium, Copper, Bismuth
Commodity typeM
Deposit
Deposit typeVein
Model82: Epithermal veins
Deposit sizeN
Orebody formTABULAR
Ore controlNw-Trending Precambrian Dike Swarm
Materials
Ore mineralsHessite, Sylvanite
Geology
Host rockMafic Intrusive Rock,Gneiss · Granodiorite Gneiss;Metaquartzite
Associated rockMafic Intrusive Rock,Hornblendite · Hornblende Diorite;Intermediate Stocks, Laccoliths, Plugs, Dikes, And Sills
StructureSierra Blanca Massif, Rio Grande Rift Zone, Ft. Garland Embayment, Sangre De Cristo Mtns Thrust Fault
Tectonic settingCentral Cordillera (Southern Rocky Mtns.)
Economic & production
Development statusOccurrence
Identification
Deposit ID10011673
MRDS IDD006754
Alternate namesCourthouse vein system
RegionNA
Data scoreB
Coordinates37.5903, -105.4864
References
VANDERWILT, J.W., 1947, MINERAL RESOURCES OF COLORADO: COLORADO MINERAL RESOURCES BD., P. 31.ECKEL, E.B., 1961, USGS BULL. 1114, P. 322-323.COLO. DIV. MINES 1901-02 BIENN. REPT., P. 97-98.