Mine detail: Eagan Mine

Previously called 'Egan'

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Location

Lat / long:

44.57176, -117.07271

Resource(M)

Primary:	Copper, Silver
Tertiary:	Antimony, Lead, Zinc
Ore:	Chalcopyrite, Galena, Sphalerite, Tetrahedrite
Gangue:	Barite, Calcite, Pyrite, Quartz, Siderite
Orebody form:	LENTICULAR
Discovery year:	1895

Production

Operation type:	Underground
Production size:	Medium
Development status:	Past Producer

Geology

Host rock:	Seven Devils Volcanics
Host type:	Quartz Latite
Associated rock:	Seven Devils Volcanics-Quartz Latite;Diorite
Associated type:	Diorite
Structure:	Area Appears To Be On The North Limb Of A Faulted Anticline Of General N.E. Trend
Tectonic:	Island Arc
Alteration processes:	Oxidation

References

MRDS	W012765
MAS	160870032
DEP	10070085
Reference	{Deposit:: ANDERSON, A. L., AND WAGNER, W. R., 1952, RECONNAISSANCE GEOLOGY AND ORE DEPOSITS OF THE MINERAL DISTRICT, IDAHO: IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 95, 26 P.}{Deposit:: SMOLAK, G.M., 1924 , AN INVESTIGATION OF THE METALLURGICAL TREATMENT OF A LOW GRADE SILVER ORE FROM THE MINERAL MINE AT MINERAL, IDAHO: MOSCOW, IDAHO, UNIV. OF IDAHO, M.S. THESIS; 51 P.}{Deposit:: 1952 RECON IDAHO BUREAU OF MINES AND GEOL., PAMPHLET 9}{Deposit:: IDAHO BUREAU OF MINES & GEOLOGY PAMPHLET 13, P. 27.}
Reporter	Benjamin, David A.; Miller, Pat, Winters, Dick