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A1. Platinum can occur in many forms in nature. The platinum group elements (platinum, palladium, rhodium, ruthenium, iridium, osmium) generally occur as alloys with iron or with transition group metals such as arsenic, tellurium, antimony, and vanadium; or as mixed platinum-palladium sulphide minerals (cooperite and braggite).

They are typically associated with copper and nickel sulphide mineralisation (commonly chalcopyrite, pyrrhotite, pentlandite) and/or with chromite. Known occurrences of platinum in its native metallic form are restricted to a handful of locations, including the Urals mountains and the Kamchatka Peninsula in Russia, and the Tulameen district of British Columbia, Canada.


A2. Platinum metal is metallic silvery-grey.

There is a picture of platinum-bearing ore on the front page of the "Platinum 2002 Interim Review "http://www.platinum.matthey.com/publications/pgm-market-reviews/archive/platinum-2002-interim-review/

There is also a picture of Russian platinum nuggets on page 20 of 'PGM Mining in Russia' in "Platinum 2004 " http://www.platinum.matthey.com/uploaded_files/Pt2004/PGM%20Mining%20Russia.pdf


http://chemistry.about.com/od/imagesclipartstructures/ig/Science-Pictures/Platinum-Group-Metal-Ore.htm

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Q: What does raw platinum look like and who can you call to find out if it is platinum?
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