VS
Name
—
Ca₂Al₃(Si₂O₇)(SiO₄)(OH,O)₂·H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
5.5
Mohs hardness
—
3.41
Specific gravity
—
Colorless
Streak
—
Vitreous
Luster
—
Perfect on {100}
Cleavage
—
A2/m
Space group
—
Pumpellyite
Structural group
—
Pmp-Al · Approved
IMA
—
2005
Named in
—
Emerald-green to white, sometimes with bluish tinges; colorless in thin section
Typical colors
—
Ca · Al · Si · O · H
Elements
—