Formula: (K,Na)2(Li,Fe)3(Zr,Ti,Fe)Si12O30
Origin of name: from Sogdiana, an ancient state in Middle Asia
Crystal system: hexagonal
Crystal class: 6/m 2/m 2/m
Twinning:
Unit cell:
Colour: violet
Diaphaneity: transparent
Luster: vitreous
Habit: massive, platy
Hardness: 7
Specific gravity: 2.90
Cleavage: 1; {0001} perfect
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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