Mine detail: Difficult Creek District

Previously called 'See Last Page'

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Location

Lat / long:

39.04582, -106.73951

Resource(M)

Primary:	Gold, Copper
Secondary:	Silver
Tertiary:	Manganese
Ore:	Chalcopyrite, Pyrite
Gangue:	Malachite
Discovery year:	1892

Production

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

Geology

Host rock:	Biotite Gneiss And Migmatite
Host type:	Schist,Gneiss
Associated type:	Quartz Monzonite,Pegmatite
Structure:	Sawatch Uplift, Castle Creek Fault Zone, Grizzly Caldera
Tectonic:	Central Cordillera (Southern Rocky Mtns)
Alteration processes:	Fe And Mn Oxides

References

MRDS	D009703
DEP	10013421
Reference	{Deposit:: BRYANT, BRUCE, 1979, GEOLOGY OF THE ASPEN 15-MINUTE QUADRANGLE, PITKIN AND GUNNISON COUNTIES, COLORADO: USGS PROF. PAPER 1073, P. 120-122}{Deposit:: BLM MINERAL SURVEYS MS 7437,7438,8666,8880,9262,9844,9895,12220,12910,12911}
Reporter	Schwochow, Stephen D.