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Skunk Creek outcrops, Madison Co., Montana, USA

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Latitude & Longitude (WGS84): 45° 20' 33'' North , 111° 57' 11'' West
Latitude & Longitude (decimal): 45.3425, -111.953055556

Outcrops along Skunk Creek near Granite Creek expose rocks of the Spuhler Peak metamorphic suite and include coarse orthoamphibole-garnet gneisses, amphibolite, sillimanite schist and quartzite.

Mineral List

4 valid minerals.

The above list contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


Vitaliano, C. J. & W. Cordua compilers (1979): Geologic map of the southern Tobacco Root Mountains, Madison County, Montana: Geological Society of America: Map and Chart Series MC-31.

Burger, H.R. et. al. (2004) Geology and geochemistry of the Spuhler Peak metamorphic suite: in Precambrian Geology of the Tobacco Root Mountains, Montana: Geological Society of America Special Paper 377: 47-70

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