Commodities
PrimaryCorundum
SecondaryKyanite
Commodity typeN
Deposit
Deposit sizeY
Orebody formLENTICULAR
Materials
Ore mineralsCorundum, Sillimanite
Geology
Host rockGneiss · Pony Series-Biotite Gneiss, Quartzite
Associated rockPegmatite · Pegmatite Dikes
Economic & production
Development statusPast Producer
First production1901
Identification
Deposit ID10069793
MRDS IDW007480
Alternate namesMontana Mine, Flying D, Gallatin Deposit
RegionNA
Data scoreB
Coordinates45.56241, -111.33445
References
CLABAUGH, S. E. AND ARMSTRONG, F. C., 1950, CORUNDUM DEPOSITS OF GAILATIN AND MADISON COUNTIES, MONT.: U.S. GEOLOGICAL SURVEY BULL. 969-B.HEINRICH, EW, 1948, DEPOSITS OF THE SILLIMANITE GROUP OF MINERALS SOUTH OF ENNIS, MADISON CO., MONT., MONT. BUR. OF MINES & GEOL, MISC. CONT. 10.MBMG MEM 28, P. 39.CONSV. DIV. COMP. DATE, 12-28-19711949 COMPILE MBMG MEM 281950 COMPILE CLABAUGH, ARMSTRONG, BULL 969-BMBMG. MEM 28.