VS
Name
—
ZnMn³⁺₂O₄
Formula
—
Mineral Species
Entry type
—
Oxides & Hydroxides
Chemical class
—
Tetragonal
Crystal system
—
6
Mohs hardness
—
5.18
Specific gravity
—
Dark brown
Streak
—
Metallic to submetallic
Luster
—
{001}, indistinct; two additional, probably on {112} and {011}
Cleavage
—
I4_1/amd
Space group
—
Spinel
Structural group
—
Hta · Grandfathered
IMA
—
1877
Named in
—
Brownish black to black; deep reddish brown in transmitted light; gray under reflected light
Typical colors
—
Zn · Mn · O
Elements
—