Explore / North America / Minnesota
Minnesota
Grand Marais thomsonite beach, Minnesota
Gem locality Documented siteGray area
What you could find
Reported finds from this ground.
Crystals and mineralsAlso reported: Thomsonite and lintonite (green zeolite) eyes in beach pebbles.
Photos via Wikimedia Commons: Stephanie Clifford from Arlington, VA, USA (CC BY 2.0).
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Why this spot
Precambrian basalt
Famous Cook County thomsonite.
Keep exploring nearby
More spots in this area.