Formula: KAlSiO4
Origin of name: Combination of symbols for elements
Crystal system: Hexagonal
Crystal class: 6
Twinning:
Unit cell:
Colour: Colourless, white, grey
Diaphaneity: Transparent to translucent
Luster: Vitreous to greasy
Habit: Massive, compact; embedded grains
Hardness: 6
Specific gravity: 2.59 to 2.625
Cleavage: 2; {10-10} and {0001} poor
Tenacity:
Streak:
Synonyms/varieties:
Comments: Polymorphous with kaliophilite, panunzite and trikalsilite
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