Mine detail: Howes Gulch District

Previously called 'Snow Drift, MS 13435BonitaCopper DistrictClaims: Empire, MS 5721Eli 1-3, MS 13435Grand View, MS 13435Mona, MS 13435Pilo T, MS 13452Columbia, MS 13452Copper Blossom, MS 13452Unpate Nted Claims: Little EmpireCopper Boy 1-2Copper KingSavannahElkLondonMariaMerry ChristmasMoose'

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Location

Lat / long:

40.59109, -105.22559

Resource(M)

Primary:	Copper, Gold, Silver
Ore:	Chalcopyrite, Pyrite, Pyrrhotite
Discovery year:	1873

Production

Operation type:	Unknown
Deposit type:	Vein
Production size:	Small
Development status:	Producer

Geology

Host rock:	Metasedimentary Rocks--Quartzofeldspathic Schist And Gneiss;Amphibolite
Host type:	Gneiss
Associated rock:	Boulder Creek Granodiorite
Associated type:	Diorite
Structure:	Front Range Uplift, Cheyenne Basin, Thompson Anticline, Nw- And East-West-Trending Faults
Tectonic:	Central Cordillera (Southern Rocky Mtns)
Alteration processes:	Fe Sulfide Oxidation

References

MRDS	D010557
DEP	10013977
Reference	{Deposit:: LEE, H.A., 1899, REPORT ON COPPER DISTRICT, LARIMER COUNTY, COLORAD O: COLORADO BUREAU OF MINES MINE MGR. REPT., 1901, P. 231}{Deposit:: COLTON, R.B., 1978, GEOLOGIC MAP OF THE BOULDER-FORT COLLINS-GREELE Y AREA, COLORADO: USGS MAP I-855-G.}
Reporter	Schwochow, Stephen D.