Fishtail Selenite

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Gypsum var. Selenite Fish-tail twin crystal form. Selenite is a transparent variety of gypsum, a calcium sulfate hydrate. Ocampo, Coahuila, Mexico.
Gypsum var. Selenite Fish-tail twin crystal form. Selenite is a transparent variety of gypsum, a calcium sulfate hydrate. Ocampo, Coahuila, Mexico.
Filename: Selenite_fishtail.jpg
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