Bright yellow crust of metacalciouranoite as alteration product of orange calciouranoite with composition (Ca.81Ba.10Pb.09)1.00U2.00O7*5H2O.. FOV 1.5x1.5 cm. Collected by L.N. Belova in 70th in Tulukui quarry. Pavel M. Kartashov collection and photo.
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