Mine detail: Spotted Horse Mine

Previously called 'Spotted Horse ClaimKentucky Favorite ClaimGold HillMcGinnisSmith CutMaginBonanza'

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Location

Lat / long:

47.17631, -109.21107

Resource(M)

Primary:	Gold, Silver
Secondary:	Lead, Copper, Tellurium, Zinc
Ore:	Galena, Sphalerite, Sylvanite, Tetrahedrite
Gangue:	Fluorite, Kaolinite, Quartz, Roscoelite
Orebody form:	IRREGULAR SHOOTS AND PIPES
Discovery year:	1881

Production

Operation type:	Underground
Deposit type:	Au-Ag-Te vein
Production size:	Yes
Development status:	Producer

Geology

Host rock:	Madison Series, Massive Limestones;Pilgrim Lms, Green Shale, Grey Thin Bedded Limestone;Colorado Group, Black Shales, And Sandstones
Host type:	Quartz Monzonite,Limestone
Associated rock:	Cret-Tert
Associated type:	Syenite,Quartz Monzonite
Structure:	Judith Mts. - Domal Structures Intruded By Cret-Tert. Stocks, Gold Hill Quartz Monzonite Stock, A Syenite Porphyry Dike, Three Faults Or Fault Systems Intersect In The Mine Area, The Large East-West Warm Springs Creek Fault, A Northeast Fault System, And A Northwest Fault System
Alteration processes:	Silicification, Sericitization, Argillization

References

MRDS	W014732
DEP	10071386
Reference	{Deposit:: ROBERTSON, A. F., 1950, MINES & MINERAL DEPOSITS - FERGUS COUNTY, MT, U.S. BUREAU OF MINES INF. CIRC. 7544.}{Deposit:: LAWSON, D. C., 1974, DIRECTORY OF MINING ENTERPRISES FOR 1974, MT BUREAU OF MINES & GEOLOGY BULL. 95.}{Deposit:: CORRY, A. V., 1933, SOME GOLD DEPOSITS - BROADWATER, BEAVERHEAD, PHILLIPS, FERGUS CO., MT BUREAU OF MINES & GEOLOGY MEMOIR 10.}{Deposit:: FORREST, R. A., 1971, GEOLOGY AND MINERAL DEPOSITS OF THE WARM SPRINGS - GILT EDGE DISTRICT, FERGUS COUNTY, MONTANA M.S. THESIS. MONT. TECH}{Production:: ROBERTSON, 1950, U.S.B.M. INF. CIRC. 7544.}
Reporter	Mlynarczyk, Meg S.