Monoclinic; isomorphous with Titanite.
G = 3·52-3·77. H = 61⁄2. Brown to black.
Various localities in Norway.
Kischtimite.
A fluocarbonate of the Cerium metals, near [Parisite] (q.v.). Cer = 74·2%.
Massive.
G = 4·78. H = 41⁄2. Yellowish brown; translucent.
Barsovka River, Kyshtymsk, Urals.
Knopite.
A variety of [Perovskite] (q.v.) containing E and Fe. Cer = 4-7; TiO₂ = 55%.