Commodities
PrimaryGemstone
Commodity typeN
Deposit
Deposit sizeY
WorkingsUnderground
Orebody formDIKE
Ore controlMonchiquite Dike
Geology
Host rockLimestone · Madison Limestone
StructureEast Flank Of Domal Uplift Little Belt Mts.
Economic & production
Development statusProducer
First production1895
Discovery year1880
Identification
Deposit ID10070455
MRDS IDW013397
Alternate namesAmerican Mine
RegionNA
Data scoreC
Coordinates46.8713, -110.34472
References
CLABAUGH, S. E., 1952, CORUNDUM DEPOSITS OF MONTANA: U.S. GEOLOGICAL SURVEY BULL. 983, P. 6 - 3