A blog of the photographs of Michael Popp who resides in an area around Louisville, Kentucky, USA. Click on the pictures to make them larger.
Wednesday, September 15, 2010
Pyrite Ball
Pyrite ball about the size of a marble found in the Waldron Shale (over 400 million years old) in Clark County, Indiana. Pyrite is also known as "fool's gold" or iron disulfide.
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