giftedsifrhippus Posted March 25, 2021 Share Posted March 25, 2021 Many of the fossils collected from the Bighorn Basin are coated in this nasty purple-ish carbonate material. I've tried soaking it in a dilute acetic acid but it's not very effective. Would dilute muriatic acid work? Or would it react with hydroxyapatite? Link to comment Share on other sites More sharing options...
Mediospirifer Posted March 25, 2021 Share Posted March 25, 2021 Try it on a piece you don't mind destroying, first! I don't know how readily muriatic acid will attack hydroxyapatite, but I'd expect it to etch it to some degree. You may need to clean it off manually with a dental pick, or other prep tools. Good luck! Link to comment Share on other sites More sharing options...
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