Mine detail: Beal Mountain Mine

Previously called 'German Gulch'

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Location

Lat / long: 45.95429, -112.8831

Resource(M)

Primary: Gold
Secondary: Silver
Ore: Arsenopyrite, Gold, Sylvanite
Orebody form: PIPE (NEARLY VERTICAL)
Other material: Calcite, Chalcopyrite, Chlorite, Molybdenite, Pyrite, Pyrrhotite, Quartz, Sericite
Discovery year: 1864

Production

Operation type: Surface
Deposit type: Polymetallic veins, Au-Ag, Skarn, Au
Development status: Plant
First production started: 1989

Geology

Host rock:COLORADO GROUP (?); BLACKLEAF FORMATION; VAUGHN MEMBER
Host type:Quartzite
Associated rock:BOULDER BATHOLITH
Associated type:Diorite

References

MRDSW026570
MAS300930087
DEP10124641
Reference{Deposit:: BANISTER, D. P. GERMAN GULCH, SILVER BOW COUNTY, MONTANA. BUMINES HEAVY MINERALS SITUATION REPORT NO. 57, MARCH 1969, 10 PP.}{Deposit:: BEAL MOUNTAIN MINING INC. (PEGASUS GOLD CORP.). APPLICATION FOR A HARD ROCK OPERATING PERMIT, BEAL MOUNTAIN PROJECT, SILVER BOW COUNTY, MONTANA. FEBRUARY 1988.}{Deposit:: LAWSON, D. C. DIRECTORY OF MONTANA MINING ENTERPRISES FOR 1990. MONTANA BUREAU OF MINES AND GEOLOGY, BULL. 129, 1990.}{Deposit:: LYDEN, C. J. THE GOLD PLACERS OF MONTANA. MONTANA BUREAU OF MINES AND GEOLOGY, MEM. NO. 26, 1948, P. 142.}{Deposit:: MUNDSTOCK, W. GERMAN GULCH MINING OPERATIONS MAY START BY THIS FALL, SAYS PEGASUS OFFICIAL. WALLACE MINER. FEBRUARY 11, 1988, P. 2.}{Deposit:: NORTHERN MINER (TORONTO, CANADA). PEGASUS DOUBLES ORE RESERVES AT MONTANA LEACHING PROJECT. JANUARY 17, 1985.}{Deposit:: PEGASUS GOLD INC. ANNUAL REPORTS, 1986 - 1990.}{Deposit:: SAHINEN, U. M. MINING DISTRICTS OF MONTANA; A THESIS. MONTANA SCHOOL OF MINES, BUTTE, MT, 1935, P. 91.}{Deposit:: WALENGA, K. $13.2 MILLION PROJECT WON PERMITS IN RECORD TIME. ROCKY MOUNTAIN PAYDIRT, MARCH 1989, PP. 4A-5A.}{Deposit:: MONTANA STANDARD. MEETING THURSDAY ON BEAL AMENDMENT.FEB. 2, 1992.}{Deposit:: MONTANA STANDARD. MINING COMPANY WANTS TO EXPAND OPERATIONS. JAN. 21, 1992.}{Deposit:: MONTANA STANDARD. PEGASUS PLANS BEAL EXPLORATION.APRIL 5, 1992.}{Deposit:: PEGASUS GOLD INC., 1991 ANNUAL REPORT, P. 4,5,11,12, 1992.}{Deposit:: MINING RECORD. PEGASUS INCREASES RESERVES 14% IN 3 MONTHS. VOL.106N/13. MARCH 29, 1995.}{Deposit:: THE MINING RECORD, VOL 107, #34, AUG. 21, 1996, P19.}{Geology:: HASTINGS, J.S., AND HARROLD, J.L., 1988, GEOLOGY OF THE BEAL GOLD DEPOSIT, GERMAN GULCH, MONTANA IN: BULK MINEABLE PRECIOUS METAL DEPOSITS OF THE WESTERN UNITED STATES; SYMPOSIUM PROCEEDINGS, R.W. SHAFER, J.J. COOPER AND P.G VIKRE (EDS.): GEOLOGICAL SOCIETY OF NEVADA, P. 207-220}{Production:: PEGASUS GOLD INC., 1995 ANNUAL REPORT, P6.}{Reserve-Resource:: PEGASUS GOLD INC., 1995 FORM 10-K, P9.}{Reserve-Resource:: PEGASUS GOLD INC., 1996 ANNUAL REPORT, PP. 6-7, & FORM 10-K}{Reserve-Resource:: REPORT, PP. 8, 17-18.}
ReporterBuckingham, David A.