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  • Profile picture of Matthew Hickman

    Matthew Hickman posted an image in the group Group logo of What is it?What is it? from the myFOSSIL app 2 years, 8 months ago

    2 years, 8 months ago
    2 years, 8 months ago

    what is this #fossil

    • Profile picture of Loren Javernick
      Loren Javernick replied 2 years, 8 months ago

      I think that’s limestone. It’s made of calcium carbonate which dissolves in the presence of even weak acids like vinegar. Limestone rock formations can be crazy looking for this reason. I’m not an expert tho just a guess