Anatase
Mineral TiO2
About it
Small, sharp, steep bipyramids, often blue-black or brown, with a bright adamantine shine. Found in Alpine clefts; Switzerland and the Hardangervidda of Norway give fine crystals.
- Type
- Mineral
- Group
- Oxide (TiO2 polymorph)
- Formula
- TiO2
- Hardness (Mohs)
- 5.5–6
- Specific gravity
- 3.79–3.97
- Streak
- white to pale yellow
- Lustre
- adamantine (diamond-like), submetallic
- Crystal system
- Tetragonal
- Colours
- blue-black, brown, yellow, blue, grey
- Transparency
- transparent, translucent, opaque
- Cleavage and fracture
- perfect basal and pyramidal; subconchoidal fracture
Typical values: real specimens vary. For more, see mindat.org.