VS
Name
—
K[Ti₃Cr₅Fe³⁺₂Mg₂]O₁₉
Formula
—
Mineral Species
Entry type
—
Oxides & Hydroxides
Chemical class
—
Hexagonal
Crystal system
—
4.1
Mohs hardness
—
4.34
Specific gravity
—
Brown
Streak
—
Metallic
Luster
—
{0001}, perfect; {1121}, good; {1011}, poor
Cleavage
—
P6_3/mmc
Space group
—
Magnetoplumbite
Structural group
—
Yim · Approved
IMA
—
1982
Named in
—
Black; gray to grayish white in reflected light
Typical colors
—
K · Ti · Cr · Fe · Mg · O
Elements
—