Halite
Chemical Formula	NaCl
Species	Halides
Crystal System	Isometric
Mohs Scale	2
Specific Gravity	2.17
Color	Colorless or white; also blue, purple, red, pink, yellow, orange, or gray
Streak	White
Luster	Vitreous
Refractive Index	n = 1.5443
Diaphaneity	Transparent, Translucent
Cleavage	PerfectOn
Fracture	Conchoidal
Crystal Habit：Predominantly cubes and in massive sedimentary beds, but also granular, fibrous and compact
Geological Setting：Sedimentary evaporite deposits