Mine detail: Great Excelsior Mine

Previously called 'Lincoln MinePresident Mine, Excelsior'

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Location

Lat / long:

48.8987, -121.80596

Resource(M)

Primary:	Gold, Silver
Tertiary:	Copper, Lead, Zinc, Arsenic, Antimony
Ore:	Chalcopyrite, Galena, Gold, Pyrite, Silver, Sphalerite, Tetrahedrite
Gangue:	Dolomite, Quartz
Orebody form:	BRECCIA PIPE, STOCKWORKS
Discovery year:	1900

Production

Operation type:	Unknown
Production size:	Small
Development status:	Producer
First production started:	1903
Last production ended:	1916

Geology

Host rock:	Wells Creek Volcanics;Wells Creek Volcanics;Wells Creek Volcanics;Wells Creek Volcanics;Wells Creek Volcanics
Host type:	Andesite
Structure:	West-Plunging Syncline Superimposed On West Limb Of Regional North-Trending Anticline, Strong Shears
Tectonic:	Cascade Volcanic Arc
Alteration processes:	Andesite Is Silicified And Sericitized

References

MRDS	M700046
DEP	10047768
Reference	{Deposit:: HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, P. 177.}{Deposit:: MOEN, W.S., 1969, MINES AND MINERAL DEPOSITS OF WHATCOM COUNTY, WASHINGTON: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 57, P. 86-87.}{Deposit:: MOEN, W.S., 1976, SILVER OCCURENCES OF WASHINGTON: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES BULLETIN 69, P. 160.}{Deposit:: GRANT, A.R., 1976, REPORT OF EVALUATION, MINERAL RESOURCE ANALYSIS STUDY ON UNITED STATES FOREST SERVICE LAND, STATE OF WASHINGTON: PREPARED FOR U.S. FOREST SERVICE - REGION 6, CONTRACT NO. 004724N, P. 26.}{Deposit:: DERKEY, R.E., JOSEPH, N.L., AND LASMANIS, RAYMOND, 1990, METAL MINES OF WASHINGTON - PRELIMINARY REPORT: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES OPEN-FILE REPORT 90-18, P. 557.}{Production:: MOEN, 1969; HUNTTING, 1956; DERKEY AND OTHERS, 1990}
Reporter	Caress, Mary E. (Evarts, Russ), Peterson, Jocelyn A.