Hussakite (Xenotime).
A prismatic form of [Xenotime] (q.v.), erroneously supposed to contain > 6% SO₃.
Diamond sands of Brazil.
Hydrotitanite.
An altered [Perovskite] (q.v.) with Fe´´´ and aq. TiO₂ = 82·8%.
Amorphous.
G = 3·68. H = 1-2. Yellowish grey.
Magnet Cove, Arkansas.
Ilmenite.
FeTiO₃; composition varies widely. TiO₂ = 3·5-52·3%.