Pt averages 30-73% Pt and 18-58% osmiridium.
Mineral ListMineral list contains entries from the region specified including sub-localities
15 entries listed. 12 valid minerals.
Localities in this Region
The above list contains all mineral locality references listed on mindat.org. 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 mindat.org 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.
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 45.
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Locality Updated: Upson prospect, Gogebic Range, Iron Co., Wisconsin, USAFrom Chester S. Lemanski, Jr., 21st Dec 2014 16:07:01