TheRocksWillShoutHisGlory Posted March 21 Share Posted March 21 I had a nodule that I picked up at pit 11 a couple of weeks ago split open, however basically everything about it has me stumped. There are tiny dark speks that are iridescent, some turn blue, others green and one of them pink with different light angles. Are these bits opalized? I'd like to know before doing anything else to prep it since opal can be sensitive to moisture. I've heard of iridescence in a lingula specimen, but other than that I'm unfamiliar with any mazon material having iridescence, and I'm wondering how that could happen inside a concretion. Furthermore any ideas what it is? random plant matter? coprolite? blank with mineralization? 1 Link to comment Share on other sites More sharing options...
Mark Kmiecik Posted March 21 Share Posted March 21 Most likely to be pyrite. Hard to say much else from the photos. Mark. Fossil hunting is easy -- they don't run away when you shoot at them! Link to comment Share on other sites More sharing options...
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