Platinum

= Platinum: It is one of the most precious metals  =

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**What it is made of: Platinum is usually found chemically uncombined, native platinum and alloyed with iridium as platiniridium.**

Is it found in Iowa, & where: It is not found in Iowa.
Sources: http://en.wikipedia.org/wiki/Platinum, www.google.com, http://www.galleries.com/minerals/elements/platinum/platinum.htm