VS
Name
—
Mn²⁺₃Si₂O₅(OH)₄
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
3–3.5
Mohs hardness
—
2.83–2.94
Specific gravity
—
—
Streak
—
—
Luster
—
Perfect on {001}
Cleavage
—
—
Space group
—
Serpentine, Clay
Structural group
—
Cpl · Approved
IMA
—
1889
Named in
—
Reddish brown, tan; light brown to yellow in thin section
Typical colors
—
Mn · Si · O · H
Elements
—