Cobaltoan calcite
Variety CaCO3
Also called Cobalt calcite
About it
Calcite tinted hot pink to magenta by cobalt, often as sparkling crusts and small rhombs. Classic from Kolwezi in the Democratic Republic of Congo and Bou Azzer in Morocco.
- Type
- Variety
- Group
- Calcite variety
- Formula
- CaCO3
- Hardness (Mohs)
- 3
- Specific gravity
- 2.7–2.9
- Streak
- white
- Lustre
- vitreous (glassy)
- Crystal system
- Trigonal
- Colours
- pink, rose red, magenta
- Transparency
- transparent, translucent
- Cleavage and fracture
- perfect rhombohedral in three directions
Typical values: real specimens vary. For more, see mindat.org.