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After more research and some lucky talks I believe this to be epidote from tailings out of the Wolverine Mine, a few miles from where I found these pieces.

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Was rock hounding on the southern shore of Lake Superior. Found these green crystal deposits that formed like geodes, specimens are small, the largest is about the size of a corn kernel. A local said it could be chlorasolite but I don’t think it matches based on color and clarity. Any thoughts would be appreciated!

  • SatansInteriorDsgnr@lemmy.world
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    7 months ago

    This honestly just looks like regular old peridotite in some sort of basaltic groundmass. The crystals would be made of olivine which is very green and the surrounding groundmass I’m not sure, something mafic to ultrmafic though.