Читать книгу The Rare Earths: Their Occurrence, Chemistry, and Technology - Stanley Isaac Levy - Страница 114

Hydrated phosphate of E, Al, Fe, Mg, etc., with SiO₂. Cer = 53·8-57; Yttr = 2·1-10·0%.

Massive.

G = 3·94-4·01. H = 3¹⁄₂. Brown to yellow; translucent.

Cornwall; Scoville, Connecticut, U.S.A.