URANOSPINITE / META-URANOSPINITE Ca(UO2)2(AsO4)2·10H2O / Ca(UO2)2(AsO4)2·8H2O  (tetragonal)
autunite group

translucent platy microcrystals on matrix
Grube Buhlskopf, near Ellweiler, Rheinland-Pfalz, Germany