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Entry № 187

Erythrite

Cobalt Bloom

The magenta warning-flag of buried cobalt.

Chakra

Heart · Sacral

Element

Fire · Water

Zodiac

Scorpio · Libra

Erythrite

I. The Metaphysical Reading

How the stone has been held.

Erythrite is treated as a signal stone rather than a hand-held one — historically it was the miner's flag that cobalt and silver ore lay beneath the surface. Practitioners keep it under glass and hold it as a reminder that the strongest colours are sometimes the ones telling you what is hidden underneath.

Chakra
Heart · Sacral
Element
Fire · Water
Zodiac
Scorpio · Libra
Keynote
The magenta warning-flag of buried cobalt.

II. The Scientific Reading

What the lattice actually does.

Erythrite is a hydrated cobalt arsenate that forms as a secondary mineral in the oxidation zones of cobalt-, nickel- and silver-bearing sulphide deposits — the classic 'cobalt bloom' historically used by prospectors to locate silver-cobalt veins at Schneeberg and later at Cobalt, Ontario. It contains arsenic and should not be handled with bare hands or ingested.

Formula
Co₃(AsO₄)₂·8H₂O
System
Monoclinic
Hardness
1.5 – 2.5 (Mohs)
Provenance
Morocco (Bou Azzer), Germany (Schneeberg), Canada (Cobalt, Ontario)

References & Sources

Independent mineralogical references used to verify the scientific details above.

Mineral Profile

Fact Sheet

Chemical Formula
Co₃(AsO₄)₂·8H₂O
Crystal System
Monoclinic
Mohs Hardness
1.5 – 2.5 (Mohs)
Density
3.06 g/cm³
Refractive Index
1.626 – 1.699
Provenance
Morocco (Bou Azzer), Germany (Schneeberg), Canada (Cobalt, Ontario)
Color Origin
Vivid magenta to crimson-pink acicular sprays and coatings

Related Crystals

Stones that share this lattice

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