VS
Name
—
Zn₂Mn²⁺(SiO₄)(OH)₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
5
Mohs hardness
—
4.06–4.08
Specific gravity
—
—
Streak
—
—
Luster
—
Perfect on {001}
Cleavage
—
P2_1/a
Space group
—
—
Structural group
—
Hgk · Grandfathered
IMA
—
1913
Named in
—
Bright pink or red to reddish brown and orange, rarely yellow; black from tarnish or inclusions
Typical colors
—
Zn · Mn · Si · O · H
Elements
—