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Formula: FeS2
Iron pyrite, or Fool's Gold, is a common metallic mineral containing about 50% iron and 33% sulfur. It is found in many types of rocks and is common in clay deposits in small chunks and even large boulders.

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| URLs |
http://en.wikipedia.org/wiki/Iron_pyrite
Iron Pyrite on Wikipedia |
| URLs |
http://www.handbookofmineralogy.org/pdfs/Pyrite.pdf
Pyrite mineralogy |
| Materials |
Iron Pyrite
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