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Entry № 111

Cobaltoan Calcite

Cobalt-Bearing Calcium Carbonate

A vivid pink calcite tinted by cobalt.

Chakra

Heart

Element

Water

Zodiac

Libra

Cobaltoan Calcite

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

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Next in the Atlas

Conichalcite

A vivid green copper arsenate of oxidised veins.