Montana · Madison County
Occurrence

Antelope-Pony District

Madison County, Montana, United States
ChromiumOsmiumIridium
⌖ Show on mapUSGS source ↗
Commodities
PrimaryChromium
TertiaryOsmium, Iridium
Commodity typeM
Deposit
Deposit sizeN
Orebody formUNKNOWN
Materials
Ore mineralsChromite
Geology
Host rockGranite
Tectonic settingIn Rocky Mountains
Economic & production
Development statusOccurrence
Identification
Deposit ID10038141
MRDS IDM045427
RegionNA
Data scoreC
Coordinates45.67601, -111.95725
References
PAGE, N.J, CLARK, A.L., DESBOROUGH, G.A., AND PARKER, R.L., 1973, PLATINUM-GROUP METALS, IN BROBST, D.A., AND PRATT, W.P., EDS., UNITED STATES MINERAL RESOURCES: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 820, P. 539, TABLE 110