Gyrolite
Chemical Formula	NaCa16Si23AlO60OH8·64H2O
Species	Silicates
Crystal System	Triclinic
Mohs Scale	2
Specific Gravity	2.74
Color	Brown, Colorless, White, Green
Streak	White
Luster	Vitreous
Refractive Index	n = 1.535 n = 1.548 n = 1.549
Diaphaneity	Transparent, Translucent
Cleavage	Perfect
Fracture	Irregular/Uneven