Perovskite
Mineral CaTiO3
About it
Pseudo-cubic black to brown crystals with an adamantine to metallic shine, in skarns and silica-poor igneous rocks. Named for Russian mineralogist Lev Perovski; Val Malenco, Italy, and Magnet Cove, Arkansas, give fine crystals.
- Type
- Mineral
- Group
- Oxide, perovskite group
- Formula
- CaTiO3
- Hardness (Mohs)
- 5.5
- Specific gravity
- 3.98–4.26
- Streak
- greyish white
- Lustre
- adamantine (diamond-like), submetallic, metallic
- Crystal system
- Orthorhombic
- Colours
- black, reddish brown, brown, yellow, orange
- Transparency
- translucent, opaque
- Cleavage and fracture
- imperfect cubic; uneven to subconchoidal fracture
Typical values: real specimens vary. For more, see mindat.org.