Titanite
Mineral CaTiSiO5
Also called Sphene
About it
Wedge- or envelope-shaped crystals with a near-diamond lustre and more fire than diamond when cut; Bancroft, Ontario, Pakistan, Brazil, and Madagascar.
- Type
- Mineral
- Group
- Silicate (nesosilicate), titanite group
- Formula
- CaTiSiO5
- Hardness (Mohs)
- 5–5.5
- Specific gravity
- 3.48–3.6
- Streak
- white
- Lustre
- adamantine (diamond-like), resinous
- Crystal system
- Monoclinic
- Colours
- yellow, green, brown, black, red
- Transparency
- transparent, translucent, opaque
- Cleavage and fracture
- good in two directions
Typical values: real specimens vary. For more, see mindat.org.