Mine detail: Broadwater Mine

Previously called ''

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Location

Lat / long:

46.93435, -110.72501

Resource(M)

Primary:	Silver, Lead, Zinc
Secondary:	Copper, Gold
Ore:	Chalcopyrite, Polybasite, Proustite, Pyrargyrite, Pyrite, Sphalerite, Galena
Gangue:	Barite, Quartz
Orebody form:	TABULAR
Discovery year:	1881

Production

Operation type:	Unknown
Deposit type:	Polymetallic veins
Production size:	Yes
Development status:	Past Producer
First production started:	1886

Geology

Host rock:	Belt, Neihart Quartzite;Gneiss And Schist
Host type:	Diorite,Gneiss
Associated rock:	Snow Creek Porphyry-Pluton & 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., Pre-Mineral Moulton Fault, Domal Uplift Caused By Intrusion Of Snow Creek Porphyry
Tectonic:	Rocky Mountain Foreland

References

MRDS	W014725
DEP	10071380
Reference	{Deposit:: SCHAFER, 1935, GEOLOGY & ORE DEPOSITS - NEIHART MINING DISTRICT, CASCADE COUNTY, MONTANA, MT BUREAU MINES & GEOL. MEM. 13.}{Deposit:: LAWSON, 1976, DIRECTORY OF MINING ENTERPRISES 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.