Kosnarite

Formula:  KZr2(PO4)3

Origin of name:  For Richard Kosner, American mineral dealer

 

Crystal system:  Hexagonal

Crystal class:  -3 2/m

Twinning: 

Unit cell: 

 

Colour:  Pale blue to blue-green to nearly colourless

Diaphaneity:  Transparent

Luster:  Vitreous

Habit:  Pseudocubic rhombohedral crystals to 0.9 mm

Hardness:  4.5

Specific gravity:  3.194

Cleavage:  1; {102} perfect

Tenacity: 

Streak:  White

 

Synonyms/varieties:

 

Comments: 

 

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