Indialite
Chemical Formula	Mg2Al4Si5O18
Species	Silicates
Crystal System	Hexagonal
Mohs Scale	7
Color	Colourless (thin section).
Luster	Vitreous
Refractive Index	n = 1.539 n = 1.534
Diaphaneity	Transparent
Crystal Habit：Small hexagonal grains and clusters of spiral-shaped grains, some exhibiting tentacles or multiple terminations.
Geological Setting：Polymetamorphosed pelitic rock (Japan); volcanic eruptive matter (Bellerberg volcano).