Formula: KMgCl3 . 6H2O
Origin of name: For R. von Carnall (1804-1874), Prussian mining engineer
Crystal class: 2/m 2/m 2/m
Unit cell: a = 9.56, b = 16.05, c = 22.56
Colour: Colourless, white, yellow, blue
Diaphaneity: Transparent to translucent
Habit: Crystals thick tabular or pseudo-hexagonal pyramidal; massive, granular
Hardness: 2.5
Specific gravity: 1.602
Cleavage: None
Tenacity: Conchoidal fracture
Streak: White
Synonyms/varieties:
Comments:
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