Mine detail: Moulton Mine

Previously called ''

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Location

Lat / long:

46.93935, -110.73445

Resource(M)

Primary:	Silver
Secondary:	Lead, Zinc
Ore:	Polybasite, Proustite, Pyrite
Gangue:	Barite, Rhodochrosite
Orebody form:	TABULAR
Discovery year:	1882

Production

Operation type:	Unknown
Production size:	Yes
Development status:	Producer
First production started:	1895

Geology

Host rock:	Belt, Neihart Quartzite;Gneiss And Schist
Host type:	Gneiss
Associated rock:	Snow Creek Porphyry-Pluton And Dikes Of Rhyolite Porphyry;Pinto Diorite-Large Phenocrysts Of Feldspar & Hornblende
Associated type:	Diorite,Rhyolite
Structure:	Zone Of Igneous Intrusions Covering Over 800 Square Km, Moulton Fault - With N 70 Deg W Strike And Steep 85 Deg N Dip. - Suggested To Be Pre-Mineral
Tectonic:	Rocky Mountain Foreland
Alteration processes:	Sericitization & Carbonatization

References

MRDS	W014736
DEP	10071389
Reference	{Deposit:: SCHAFER, 1935, GEOLOGY & ORE DEPOSIT S - NEIHART MINING DISTRICT, CASCADE COUNTY, MONTANA, MT BUREAU MINES & GEOLOGY MEMOIR 13.}{Deposit:: LAWSON, D. C., 1976, DIRECTORY OF MINING ENTEPRISES FOR 1975, MONTANA BUREAU MINES & GEOLOGY BULL. 100.}{Deposit:: ROBERTSON, A. F., 1951, MINES & MINERAL DEPOSITS - CASCADE COUNTY, U. S. BUREAU MINES INF. CIRC. 7589.}{Deposit:: KLEINKOPF, M. D., WITKIND, I. J., AND KEEFER, W. R., 1972, AEROMAGNETIC, BOUGUER GRAVITY, AND GENERALIZED GEOLOGIC MAPS OF THE CENTRAL PART OF THE LITTLE BELT MOUNTAINS, MONTANA: U.S. GEOLOGICAL SURVEY MAP GP-837}{Production:: ROBERTSON, 1951, U.S.B.M. INF. CIRC. 7589}
Reporter	Mlynarczyk, Meg S.