VS
Name
—
SrAl₂Si₂O₇(OH)₂·H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
5–5.5
Mohs hardness
—
3.37
Specific gravity
—
White
Streak
—
Vitreous
Luster
—
Good in one direction
Cleavage
—
P2_1/m
Space group
—
Lawsonite
Structural group
—
Ito · Approved
IMA
—
1998
Named in
—
Blue, colorless in thin section
Typical colors
—
Sr · Al · Si · O · H
Elements
—