Mine detail: Stewart Mine

Previously called 'Crystal Victoria MineNancy Cleo Mine'

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Location

Lat / long:

39.04221, -106.57812

Resource(M)

Primary:	Gold
Secondary:	Silver, Lead, Zinc
Ore:	Altaite, Arsenopyrite, Chalcopyrite, Galena, Gold, Pyrite, Pyrrhotite, Sphalerite
Gangue:	Calcite, Quartz

Production

Operation type:	Underground
Development status:	Prospect

Geology

Host type:	Granodiorite,Volcanic Rock (Aphanitic)
Structure:	block faults around collapse structure (caldera)
Alteration processes:	widespread pyritization and silicification

References

MAS	80150266
DEP	10214779
Reference	{Deposit:: COLO BOM 1969}{Deposit:: Baskin, G. D., 1987, Mineral resources of the Collegiate Peaks Wilderness, Chaffee, Gunnison, Lake, and Pitkin Counties, Colorado: U.S. Bureau of Mines Open File Report MLA 45-87, 100 p.}{Deposit:: Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.}
Reporter	Intermountain Field Operations Center (IFOC), Beach, Richard A.