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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