Claudetite
Mineral As2O3
Take care.
- Contains arsenic: Wash your hands after handling it, don't make dust, and never heat it.
- Damaged by water: Keep it dry: don't wash it, and keep it out of damp places.
About it
Thin, colourless, pearly plates of arsenic oxide, the monoclinic partner of arsenolite, formed on burning mine dumps and weathered arsenic ores. Very poisonous; handle with care and wash hands.
- Type
- Mineral
- Group
- Oxide
- Formula
- As2O3
- Hardness (Mohs)
- 2.5
- Specific gravity
- 3.85–4.15
- Streak
- white
- Lustre
- vitreous (glassy), pearly
- Crystal system
- Monoclinic
- Colours
- colourless, white
- Transparency
- transparent, translucent
- Cleavage and fracture
- perfect in one direction
Typical values: real specimens vary. For more, see mindat.org.