Word of the Day
September 11, 2006 | Life
Petoskey Stone:
A Petoskey stone is a rock, often pebble-shaped, that is composed of a fossilized coral, Hexagonaria percarinata. The stones were formed as a result of glaciation, in which sheets of ice plucked stones from the bedrock, grinding off their rough edges and depositing them in the northwestern portion of Michigan's lower peninsula.
The state stone of Michigan!
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