TiO2Tetragonal
Rutile
TiO2
OxidesChemical FormulaTiO2
Crystal SystemTetragonal
Mohs Hardness6.5
Specific Gravity4.23
ColorReddish brown, black, yellow
LusterAdamantine to metallic
StreakPale brown
CleavageTwo directions
FractureUneven to conchoidal
Occurrence
Found in metamorphic and igneous rocks. Source of titanium. Needle inclusions in quartz.