Komkovite

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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