VS
Name
—
Mn²⁺Al₆Si₄O₁₇(OH)₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
2–3
Mohs hardness
—
3.3–3.38
Specific gravity
—
—
Streak
—
—
Luster
—
Good on {100}
Cleavage
—
P2_1/m
Space group
—
—
Structural group
—
Drx · Grandfathered
IMA
—
1878
Named in
—
Creamy white to very pale rose; colorless to faint yellow in thin section
Typical colors
—
Mn · Al · Si · O · H
Elements
—