VS
Name
—
(Fe³⁺₂Ti)O₅
Formula
—
Mineral Species
Entry type
—
Oxides & Hydroxides
Chemical class
—
Orthorhombic
Crystal system
—
6
Mohs hardness
—
4.33–4.39
Specific gravity
—
Reddish brown to ocher-yellow
Streak
—
Metallic adamantine, may be tarnished iridescent, greasy on fractures
Luster
—
{102}, distinct
Cleavage
—
Cmcm
Space group
—
Pseudobrookite
Structural group
—
Pbrk · Approved
IMA
—
1878
Named in
—
Dark reddish brown, brownish black, black; in transmitted light, yellowish brown or reddish brown
Typical colors
—
Fe · Ti · O
Elements
—