Roselite
Mineral Ca2Co(AsO4)2·2H2O
Take care.
- Contains arsenic: Wash your hands after handling it, don't make dust, and never heat it.
About it
Rose-pink to deep pink crystals of calcium-cobalt arsenate, the finest from Bou Azzer in Morocco. Named for German mineralogist Gustav Rose; first found at Schneeberg in Saxony.
- Type
- Mineral
- Group
- Arsenate, roselite group
- Formula
- Ca2Co(AsO4)2·2H2O
- Hardness (Mohs)
- 3.5
- Specific gravity
- 3.5–3.7
- Streak
- pale pink
- Lustre
- vitreous (glassy)
- Crystal system
- Monoclinic
- Colours
- rose pink, deep pink, red
- Transparency
- transparent, translucent
- Cleavage and fracture
- good in one direction
Typical values: real specimens vary. For more, see mindat.org.