Mine detail: Star Group

Previously called 'Evening StarLondonMorning Star'

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Location

Lat / long:

46.94435, -110.74667

Resource(M)

Primary:	Silver, Lead
Secondary:	Gold, Copper, Zinc
Ore:	Galena, Pyrargyrite, Silver, Sphalerite, Stephanite
Gangue:	Quartz
Orebody form:	SHOOTS

Production

Operation type:	Unknown
Production size:	Yes
Development status:	Past Producer
First production started:	1925

Geology

Host type:	Diorite,Gneiss
Associated rock:	Pre Beltian Gneisses & Schists;Pinto Diorite
Associated type:	Diorite,Rhyolite
Structure:	Zone Of Igneous Intrusions Covering Over 800 Square Km., The Vein Has Been Offset By Several Cross Faults & Some Strike Faults That Have Crushed The Ore
Tectonic:	Rocky Mountain Foreland

References

MRDS	W014723
DEP	10071378
Reference	{Deposit:: HERDLICK, J. A., 1949, INVESTIGATION OF THE STAR MINE, NEIHART DISTRICT, CASCADE COUNTY, MT, U.S. BUREAU MINES REPT. INVEST. 4474.}{Deposit:: SCHAFER, P. A., 1935, GEOLOGY & ORE DEPOSITS OF THE NEIHART MINING DISTRICT, CASCADE CO., MT, M.B.M.G. MEMOIR 13.}{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.