Tags: Chemical Substance, Mineral.
Cancrinite is a complex carbonate and silicate of sodium calcium and aluminium with the formula Na6Ca2[(CO3)2Al6Si6O24]·2H2O. It is classed as a member of the feldspathoid group of minerals; the alkali feldspars that are poor in silica. Yellow orange pink white or even blue it has a vitreous or pearly lustre; a hardness of 5-6 and an uneven conchoidal fracture.
