Valentinite
Mineral Sb2O3
Take care.
- Toxic: Wash your hands after handling it, don't lick or taste it, and don't make dust.
About it
Colourless to white fans and sprays of prisms with a pearly to adamantine shine, coating weathered stibnite. The orthorhombic form of antimony oxide; classic from Příbram, Czechia.
- Type
- Mineral
- Group
- Oxide
- Formula
- Sb2O3
- Hardness (Mohs)
- 2.5–3
- Specific gravity
- 5.69–5.76
- Streak
- white
- Lustre
- adamantine (diamond-like), pearly
- Crystal system
- Orthorhombic
- Colours
- colourless, white, grey, pale yellow, reddish
- Transparency
- transparent, translucent
- Cleavage and fracture
- perfect prismatic
Typical values: real specimens vary. For more, see mindat.org.