Cubic; in dodecahedra.
G = 4·45-4·46. H = 5-6. Brown; transparent.
Schelingen, Black Forest Mountains, Germany.
Lanthanite.
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.
Lavenite.
(Mn,Ca,Fe)(ZrOF)Na(SiO₃)₂? ZrO₂ = 28·8-31·6%.