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Michigan State Stone:
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Michigan designated the Petoskey stone as the official "state stone" in 1965 (Petoskey stone is actually not a stone but fossilized coral). In prehistoric times (about 350 million years ago), Michigan was covered by a shallow sea that teemed with coral colonies. These beautiful fossils are what remains. |
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Source: |
Michigan Adventure! Discover Our State Symbols: MI.gov
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Links: |
Geological Symbols - 50 States List
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What are your State Symbols?State Symbols USA is a nonprofit organization promoting
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