Читать книгу The Rare Earths: Their Occurrence, Chemistry, and Technology - Stanley Isaac Levy - Страница 18
Arrhenite.
ОглавлениеSilico-tantalate of Yttrium metals, with Ce, Al, Fe, Ca, Be, aq. Yttr = 33·2; Cer = 2·6; ZrO₂ = 3·4%.
Amorphous.
G = 3·68. Red; translucent to opaque.
Ytterby, Sweden.