Scolecite
Chemical Formula	CaAl2Si3O10.3H2O
Species	Silicates
Crystal System	Monoclinic
Mohs Scale	5
Specific Gravity	2.16-2.40
Color	Colorless white, pink, salmon, red or green
Streak	White
Luster	Vitreous
Refractive Index	n = 1.507 - 1.513 n = 1.516 - 1.520 n = 1.517 - 1.521
Diaphaneity	Transparent, Translucent
Cleavage	PerfectPerfect on the and
Fracture	Irregular/Uneven
Crystal Habit：Thin prismatic needles, radiating groups and fibrous masses
Geological Setting：Cavities in basalts