Pyrite: Difference between revisions

Pyrite (view source)

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 == Crystallography ==
 [[Image:example.jpg|thumb|150px|left|Description]]
-Marcasite has the same chemical formula(FeS<sub>2</sub>) as pyrite.  They are not considered the same mineral because they are classified into different crystal systems. SO even though marcasite may have the same elemental composition, it is different.  The two minerals are often accidentally confused for one another. <ref name=themineralpyrite> [http://www.minerals.net/mineral/pyrite.aspx THE MINERAL PYRITE] ''The Mineral and Gemstone Kingdom''. Web. Accessed on March 16, 2013. Author Unknown</ref>
+Pyrite may form into many different shapes such as cubes, octahedrons, and pyritohedrons.  Pyrite's shape is determined by many different factors.  These factors are temperature, pressure, and what type of rock it is formed in.  If the temperature is around 250<sup>o</sup>C then the crystal that is formed will be needle-like.
 == References==