Scapolite
ID: 102
Scapolite
Chemical Formula
(Na,Ca)₄(Al₃Si₉O₂₄)Cl
Hardness (Mohs)
5–6
Crystal System
Tetragonal
Streak
White
Luster
Vitreous to resinous
Diaphaneity
Transparent to Translucent
Color
Colorless, white, gray, yellow, pink, violet
Crystal Habit / Mode of Occurrence
Prismatic, columnar, massive
Density
2.5–2.8
Fun Facts
Scapolite is a group of silicate minerals that can fluoresce under ultraviolet light. It belongs to the Scapolite Group and is brittle.