Entry № 111
Cobaltoan Calcite
Cobalt-Bearing Calcium Carbonate
A vivid pink calcite tinted by cobalt.
Chakra
Heart
Element
Water
Zodiac
Libra

I. The Metaphysical Reading
How the stone has been held.
Cobaltoan Calcite is worked with as a stone of the openly loving heart, kept nearby during new intimacies, reconciliations and the small daily gestures that keep affection alive. Practitioners hold it as a reminder that tenderness has a saturated colour of its own.
- Chakra
- Heart
- Element
- Water
- Zodiac
- Libra
- Keynote
- A vivid pink calcite tinted by cobalt.
II. The Scientific Reading
What the lattice actually does.
Cobaltoan Calcite (also called sphaerocobaltite calcite) is calcium carbonate in which some calcium is substituted by cobalt, producing its distinctive pink to magenta colour. The most famous specimens come from the copper-cobalt belt of Katanga in the Democratic Republic of the Congo, where it grows on dolomite and malachite matrices.
- Formula
- (Ca,Co)CO₃
- System
- Trigonal
- Hardness
- 3 (Mohs)
- Provenance
- DR Congo (Katanga), Morocco (Bou Azzer), Germany, Australia
References & Sources
Independent mineralogical references used to verify the scientific details above.
Mineral Profile
Fact Sheet
- Chemical Formula
- (Ca,Co)CO₃
- Crystal System
- Trigonal
- Mohs Hardness
- 3 (Mohs)
- Density
- 2.71 – 3.13 g/cm³
- Refractive Index
- 1.486 – 1.658
- Provenance
- DR Congo (Katanga), Morocco (Bou Azzer), Germany, Australia
- Color Origin
- Vivid magenta to raspberry pink botryoidal crystals
Related Crystals
Stones that share this lattice
Next in the Atlas
Conichalcite
A vivid green copper arsenate of oxidised veins.




