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Carnallite

• KMgCl₃,6H₂O
• [K⁺][Mg(H₂O)₆]²⁺[Cl₃]^3-

• Class: Chloride - Hydrate
• Soluble in: Water
• Insoluble in: HCl
• Radioactive: Very weak
• Hydrate to Sylvite and Bischofite.
• Deliquescent

• Color: Colorless, Yellow, Red (by fine Hematite inclusions)
• Streak: White
• Luster: Resinous
• Diaphaneity: Transparent-Translucent

• Habit: Massive
• Twin: Pseudohexagonal

• Cleavage: No
• Hardness: 2.5
• Density: 1.6

• System: Orthorhombic, Pseudohexagonal
• Group: mmm, Pnna
• Lattice: a=16.1, b=22.5, c=9.6