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Monazite.

Оглавление

Phosphate of E, with Th and SiO₂. Cer = 49-74; Yttr = 1-4; ThO₂ = 1-20%.

Monoclinic.

G = 4·9-5·3. H = 5-512. Red to brown and yellow; translucent.

The Carolinas; Idaho; Brazil; Scandinavia, etc.

The Rare Earths: Their Occurrence, Chemistry, and Technology

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