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Found 2 results

  1. Hey all! When I went on a collecting trip in the Hell Creek Formation in Montana, there were many iron concretions, and I've noticed that some specimens from there appear to be iron-stained. This makes me wonder if pyrite could be among the minerals involved in fossil preservation there. Are some of the bones found in the Hell Creek pyritized, and how could those be distinguished from others preserved differently? If so, do those Hell Creek specimens ever develop "pyrite disease," and what would be the warning signs to look out for? Thanks so much for sharing your knowledge!
  2. KimTexan

    Matoaka Beach iron concretions?

    I found these on Matoaka Beach, Maryland a week ago. I found some of these that have bone and shell in them. I also found turtle shell fragments and other bone fragments. I think they are just iron concretions of some sort, but since I found bone in some I question whether there may be something else to them. Any thoughts?
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