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Novgorodovaite: Ca2(C2O4)Cl2·2(H2O)
Comments: A small fragment of the oxalate mineral novgorodovaite. Location: Chelkar salt dome, Aksai Valley, Aqtöbe Oblysy (Aktubinsk [Aktyubinsk; Aktubinskaya] Oblast'), Kazakhstan. Scale: Grain size 0.8 mm. © Thomas Witzke / Abraxas-Verlag