VS
Name
—
BaMg₃(Si₂Al₂O₁₀)(OH)₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
2.5–3
Mohs hardness
—
3.3
Specific gravity
—
—
Streak
—
Vitreous
Luster
—
{001}, perfect
Cleavage
—
C2/m
Space group
—
Mica, Clay
Structural group
—
Kns · Approved
IMA
—
1973
Named in
—
Yellow-brown to colorless; light yellow to colorless in thin section
Typical colors
—
Ba · Mg · Si · Al · O · H
Elements
—