Mine detail: Spotted Horse Mine

Previously called 'Spotted Horse ClaimKentucky Favorite ClaimGold HillMcGinnisSmith CutMaginBonanza'

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Location: Fergus County, Montana, United States, North America
Lat / long: 47.17631, -109.21107
dep_id: 10071386
mrds_id: W014732
Commodity type: metallic
Major mineral: Gold, Silver
Minor mineral: Lead, Copper, Tellurium, Zinc
Operation type: Underground
Deposit type: Au-Ag-Te vein
Production size: Production occurred
Development status: Producer
ore: Galena, Sphalerite, Sylvanite, Tetrahedrite
gangue: Fluorite, Kaolinite, Quartz, Roscoelite
orebody_fm: IRREGULAR SHOOTS AND PIPES
work_type: Underground
model: 84: Alkaline Au-Te (Au-Ag-Te veins)
alteration: Silicification, Sericitization, Argillization
conc_proc: Supergene Enrichment
ore_ctrl: Contacts Of Quartz Monzonite, Syenite, Limestone; And Breccias Produced By Faulting, One Instance Of Cave Filling.
Reporter: Mlynarczyk, Meg S.
hrock_unit: Madison Series, Massive Limestones;Pilgrim Lms, Green Shale, Grey Thin Bedded Limestone;Colorado Group, Black Shales, And Sandstones
hrock_type: Quartz Monzonite,Limestone
arock_unit: Cret-Tert
arock_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
disc_yr: 1881
discr: Anderson And Jones
References:
  • 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.
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