2026-01-27T08:18:54.929142 image/svg+xml Matplotlib v3.10.8, https://matplotlib.org/
cubic

Halite

NaCl

Quick Facts

Hardness
2.5
Specific Gravity
2.17
Refractive Index
1.544

Crystal Structure

cubic[m3m]:{100}@1.0
cubic
m3m
{100}

Physical Properties

Crystal Systemcubic
Hardness (Mohs)2.5
Specific Gravity2.17
CleavagePerfect {100} (three directions at 90 degrees)
FractureConchoidal (rarely seen)
LustreVitreous

Optical Properties

Refractive Index1.544
PleochroismNone (isotropic)