VS
Name
—
Ca₂MgAl₂(Si₂O₇)(SiO₄)(OH)₂·H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
6
Mohs hardness
—
3.18
Specific gravity
—
white
Streak
—
Vitreous
Luster
—
Distinct on {001} and {100}
Cleavage
—
A2/m
Space group
—
Pumpellyite
Structural group
—
Pmp-Mg · Approved
IMA
—
1925
Named in
—
Green, Brown
Typical colors
—
Ca · Mg · Al · Si · O · H
Elements
—