Mine detail: Eagle Mine

Previously called 'Eagle-Hawk Mine Eagle and Hawk Claims'

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Location

Lat / long:

38.26862, -106.12921

Resource(M)

Primary:	Silver, Lead
Secondary:	Copper, Gold
Tertiary:	Manganese, Zinc, Bismuth
Ore:	Argentite, Cerargyrite, Chalcocite, Chalcopyrite, Galena, Proustite, Pyrargyrite, Pyrite, Silver, Sphalerite, Tennantite
Gangue:	Fluorite, Nontronite, Psilomelane, Quartz, Rhodochrosite, Wad
Orebody form:	TABULAR TO PINCH-AND-SWELL
Discovery year:	1882

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
First production started:	1898
Last production ended:	1922

Geology

Host rock:	Eagle Gulch Latite
Host type:	Latite
Associated rock:	Eagle Gulch Latite
Associated type:	Latite
Structure:	Bonanza Caldera, Sawatch Range, San Juan Volcanic Field, Rio Grande Rift
Tectonic:	Central Cordillera (Southern Rocky Mtns.)
Alteration processes:	Early Barren Stage Of Alteration By Fumarolic Or Acid-Hot Spring Activity Resulted In Intense Silicification, Wallrock Replacement By Jasper And Alteration Products Hematite, Diaspore, Alunite, Barite, Zunyite, Rutile, And Kaolin Minerals. Later Mineralizing Stage By Alkaline Or Neutral Solution Deposited Ore And Gangue And Caused Micaceous Alteration (Sericite And Chlorite) And Calcite, Quartz, And Pyrite.

References

MRDS	D008248
DEP	10012566
Reference	{Deposit:: PATTON, H.B., 1916, GEOLOGY AND ORE DEPOSITS OF THE BONANZA DISTRICT, SAGUACHE COUNTY, COLORADO: COLORADO GEOLOGICAL SURVEY BULL. 9, 136 P.}{Deposit:: BURBANK, W.S., 1932, GEOLOGY AND ORE DEPOSITS OF THE BONANZA MINING DISTRICT, COLORADO: USGS PROF. PAPER 169, 166 P.}{Deposit:: WUENSCH, C.E., 1923, SECONDARY ENRICHMENT AT THE EAGLE MINE, BONANZA, COLO.: AIME TRANS., V. 69, P. 96-109.}{Production:: BURBANK, 1932, P.151, AS COMPILED FROM USGS AND USBM RECORDS}
Reporter	Schwochow, Stephen D.