VS
Name
—
(Fe²⁺,Fe³⁺,Ti⁴⁺)₃O₂As³⁺₂O₅
Formula
—
Mineral Species
Entry type
—
Oxides & Hydroxides
Chemical class
—
Monoclinic
Crystal system
—
5
Mohs hardness
—
4.6
Specific gravity
—
—
Streak
—
Metallic to semimetallic
Luster
—
{100}, perfect
Cleavage
—
P2_1/m
Space group
—
—
Structural group
—
Fet · Approved
IMA
—
1991
Named in
—
Brown to black, red-brown when altered; creamy white in reflected light
Typical colors
—
Fe · Ti · O · As
Elements
—