MangoThunder Posted August 24, 2021 Share Posted August 24, 2021 I found this rock on the shore of Lake Superior in Michigan's upper peninsula. Any information would be greatly appreciated. Thank you in advance! Quote Link to comment Share on other sites More sharing options...
Guest Posted August 24, 2021 Share Posted August 24, 2021 Evaporite Quote Link to comment Share on other sites More sharing options...
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