Halite
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Halite, commonly known as rock salt, is a type of salt, the mineral form of sodium chloride. Halite forms isometric crystals. Wikipedia
Mass: 58.433 g/mol
Cleavage: Perfect, three directions cubic
Crystal habit: Predominantly cubes and in massive sedimentary beds, but also granular, fibrous and compact
Crystal system: Cubic
Fracture: Conchoidal
Luster: Vitreous
Mohs scale hardness: 2.0–2.5