Cancrinite
Chemical Formula	Na6Ca2[(CO3)2|Al6Si6O24]·2H2O
Species	Silicates
Crystal System	Hexagonal
Mohs Scale	5-6
Specific Gravity	2.42-2.51
Color	grey-green, white, yellow, blue, orange, reddish
Streak	white
Luster	Vitreous, Greasy, Pearly
Refractive Index	n = 1.507 - 1.528 n = 1.495 - 1.503
Diaphaneity	Transparent, Translucent
Cleavage	PerfectPerfect on , poor on
Fracture	Irregular/Uneven
Crystal Habit：Rarely as prismatic crystals.
Geological Setting：Primary mineral in alkalic igneous rocks, alteration product of nepheline.