Mine detail: McMillan Group

Previously called 'Courthouse vein system'

<< Back to the map

Location

Lat / long:

37.5903, -105.4864

Resource(M)

Primary:	Gold, Silver
Tertiary:	Bismuth, Copper, Tellurium
Ore:	Hessite, Sylvanite
Orebody form:	TABULAR

Production

Operation type:	Unknown
Deposit type:	Vein
Production size:	None
Development status:	Occurrence

Geology

Host rock:	Granodiorite Gneiss;Metaquartzite
Host type:	Mafic Intrusive Rock,Gneiss
Associated rock:	Hornblende Diorite;Intermediate Stocks, Laccoliths, Plugs, Dikes, And Sills
Associated type:	Mafic Intrusive Rock,Hornblendite
Structure:	Sierra Blanca Massif, Rio Grande Rift Zone, Ft. Garland Embayment, Sangre De Cristo Mtns Thrust Fault
Tectonic:	Central Cordillera (Southern Rocky Mtns.)

References

MRDS	D006754
DEP	10011673
Reference	{Deposit:: VANDERWILT, J.W., 1947, MINERAL RESOURCES OF COLORADO: COLORADO MINERAL RESOURCES BD., P. 31.}{Deposit:: ECKEL, E.B., 1961, USGS BULL. 1114, P. 322-323.}{Deposit:: COLO. DIV. MINES 1901-02 BIENN. REPT., P. 97-98.}
Reporter	Schwochow, Stephen D.