Gypsum : CaSO4·2H2O
Photo added to mindat.org
“Fov ca. 3,4 cm
peter neschen collection (9532)”
Peter Neschen - 3rd December 2013
Photo added to mindat.org
“Fov ca. 2,9 cm
peter neschen collection (9532)”
Peter Neschen - 3rd December 2013
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