Na8Al6Si6O24Cl2Cubic
Sodalite
Na8Al6Si6O24Cl2
SilicatesChemical FormulaNa8Al6Si6O24Cl2
Crystal SystemCubic
Mohs Hardness5.5
Specific Gravity2.3
ColorBlue, violet, white, gray
LusterVitreous to greasy
StreakWhite
CleavageSix directions
FractureConchoidal
Occurrence
Found in igneous rocks. Blue mineral often used as gemstone. Component of lapis lazuli.