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  • Profile picture of Pat Hebert

    Pat Hebert posted a new specimen in the group Group logo of What is it?What is it? from the myFOSSIL app 3 years, 10 months ago

    3 years, 10 months ago
    3 years, 10 months ago

    Pat Hebert has contributed a new specimen to myFOSSIL!

    • Profile picture of Paul McLain
      Paul McLain replied 3 years, 10 months ago

      Looks like limestone which is made of calcite. Calcite is soluble and dissolves in acid which is what the holes are suggesting. Try putting some weak acid on it to see if you get a reaction. Quartz is harder and not soluble and therefore will not react to acid.