rockhounding
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Michigan’s Official Gem Is Found Nowhere on Earth but the U.P., and Its Namesake Island Is Off-Limits
Chlorastrolite, the Isle Royale greenstone, exists only on Isle Royale and the…
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The Rocks Yoopers Hunt on Lake Superior Beaches Are a Billion Years Old
Lake Superior agates are the U.P.’s favorite beach treasure, banded stones about…
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These Lake Superior Rocks Look Ordinary by Day, Then Glow Like Lava After Dark
They sat hidden on the beaches for a billion years before a…
