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Pyrophanite.

Оглавление

MnTiO₃, with traces of SiO₂. TiO₂ = 50-53%.

Rhombohedral; isomorphous with Ilmenite.

G = 4·537. H = 5. Deep blood-red; translucent; lustrous.

Pajsberg, Sweden.

The Rare Earths: Their Occurrence, Chemistry, and Technology

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