White garnet (Leucite)

K [AlSi 2 O 6] corresponding to K [AlSi 3 O 8] (potassium feldspar) -SiO 2 [Chemical composition] contains trace amounts of Na, Ca and H 2 O. [Crystal structure] tetragonal system, often a pseudo-equal crystal system; a 0 = 1.304 nm, c 0 = 1.385 nm; Z = 16. When the temperature is above 605 °

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