Mine detail: Morrison Mine

Previously called 'George Washington Mine'

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Location

Lat / long:

44.38489, -114.73233

Resource(M)

Primary:	Gold
Tertiary:	Copper, Silver
Ore:	Chalcopyrite, Malachite
Gangue:	Calcite, Pyrite, Quartz

Production

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

Geology

Host type:	Andesite
Associated rock:	Challis Volcanics-Andesite Flow
Associated type:	Andesite
Alteration processes:	Silicified, Sericitized

References

MRDS	W014310
MAS	160370299
DEP	10071094
Reference	{Deposit:: Umpleby, J. B., 1913, Some Ore Deposits In Northwestern Custer County, Idaho: USGS Bulletin 539, 104 P.}{Deposit:: Anderson, A. L., 1949, Silver - Gold Deposits Of The Yankee Fork District Custer County, Idaho: Idaho Bureau Of Mines And Geology Pamphlet 83, 37 P.}{Deposit:: U.S. Bureau Of Mines Open-File Report MLA 6-91, 1991, Table A-3, No. 427, P. 206.}{Production:: Umpleby, J. B., 1913, USGS Bulletin 539}
Reporter	Siefken, Robert R. (Miller, Pat), Western Field Operations Center (WFOC)