Jacobsville Sandstone

Jacobsville Sandstone is a red sandstone formation, marked with light-colored streaks and spots, primarily found in northern Upper Michigan, portions of Ontario, and under much of Lake Superior. Desired for its durability and aesthetics, the sandstone was used as an architectural building stone both locally and around the United States. The stone ...
Found on http://en.wikipedia.org/wiki/Jacobsville_Sandstone
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