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Hydrated carbonate of Cerium metals, especially La; E₂(CO₃)₃,9aq. Cer = 54·9%.

Orthorhombic; habit tabular.

G = 2·6-2·7. H = 2. White; opaque.

With Cerite (q.v.) at Bastnäs, Sweden; Bethlehem, Pennsylvania, U.S.A.