Mine detail: Sunset Shaft

Previously called ''

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Location

Lat / long:

38.11529, -105.35001

Resource(M)

Primary:	Silver
Ore:	Chalcopyrite, Galena, Sphalerite, Pyrite
Gangue:	Barite, Quartz
Discovery year:	1882

Production

Operation type:	Underground
Deposit type:	Vein
Production size:	Small
Development status:	Past Producer

Geology

Host rock:	Bunker Trachyandesite;Game Ridge Trachyte
Host type:	Trachyandesite
Structure:	Rosita Volcanic Center, Wet Mtns, Fault To North
Tectonic:	Central Cordillera (Southern Rocky Mtns)
Alteration processes:	Strong Argillization

References

MRDS	D007869
DEP	10012313
Reference	{Deposit:: CROSS, WHITMAN, 1896, GEOLOGY OF SILVER CLIFF AND THE ROSITA HILLS, COLORADO: USGS 17TH ANN. REPORT, PT 2, P. 263-403.}{Deposit:: SHARP, W.M., 1978, GEOLOGIC MAP OF THE SILVER CLIFF AND ROSITA VOLCANIC CENTERS, CUSTER COUNTY, COLORADO: USGS MAP I-1081.}
Reporter	Collins, Donna B.