Formula: BaZrSi3O9 . 3H2O
Origin of name: For A. I. Komkov, Russian mineralogist
Crystal system: Hexagonal
Crystal class: 3
Twinning:
Unit cell:
Colour: Brown
Diaphaneity:
Luster: Vitreous
Habit: Equant crystals to 1-5 mm across with trigonal pyramidal faces
Hardness: 3 to 4
Specific gravity: 3.31
Cleavage: None
Tenacity:
Streak: Light brown
Synonyms/varieties:
Comments: Light blue cathodoluminescence
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