Platinum is an extremely rare metal

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Platinum is an extremely rare metal

Postby taixyz1991 on Thu May 17, 2012 4:17 pm

Platinum is an extremely rare metal, occurring at a concentration of only 0.005 ppm in the Earth's crust. It is sometimes mistaken for silver (Ag). Platinum is often found chemically uncombined as native platinum and alloyed with iridium as platiniridium.


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