VS
Name
—
ZnMn⁴⁺₃O₇·3H₂O
Formula
—
Mineral Species
Entry type
—
Oxides & Hydroxides
Chemical class
—
Hexagonal
Crystal system
—
2.5
Mohs hardness
—
4
Specific gravity
—
Chocolate-brown
Streak
—
Metallic to submetallic
Luster
—
Perfect on {0001}
Cleavage
—
R-3
Space group
—
—
Structural group
—
Cph · Grandfathered
IMA
—
1875
Named in
—
Purplish to iron black; deep red-brown to opaque in transmitted light
Typical colors
—
Zn · Mn · O · H
Elements
—