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Davidite.

Оглавление

A Titanate of Fe, U, V, Cr, and E—uncertain formula. TiO₂ > 50; E₂O₃ = 5-10%.

Cubic—in grains and rounded crystals.

G = 4 about. Black, with brilliant lustre.

Olary, S. Australia.

The Rare Earths: Their Occurrence, Chemistry, and Technology

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