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Entry № 112

Conichalcite

Calcium Copper Arsenate Hydroxide

A vivid green copper arsenate of oxidised veins.

Chakra

Heart · Solar Plexus

Element

Earth

Zodiac

Virgo

Conichalcite

I. The Metaphysical Reading

How the stone has been held.

Conichalcite is worked with as a stone of contained vitality, kept nearby during recovery work, careful diets and the disciplines that ask us to metabolise a difficult inheritance. Practitioners hold it as a reminder that even bright green can be a warning colour.

Chakra
Heart · Solar Plexus
Element
Earth
Zodiac
Virgo
Keynote
A vivid green copper arsenate of oxidised veins.

II. The Scientific Reading

What the lattice actually does.

Conichalcite is a hydrated calcium copper arsenate that forms as botryoidal green crusts in the oxidised zones of copper deposits containing primary arsenic minerals. Because arsenic is present in its formula, specimens should not be handled wet, powdered or ingested; wash hands after contact and store away from food surfaces.

Formula
CaCu(AsO₄)(OH)
System
Orthorhombic
Hardness
4.5 (Mohs)
Provenance
USA (Utah, Arizona), Namibia (Tsumeb), Mexico, Spain

References & Sources

Independent mineralogical references used to verify the scientific details above.

Mineral Profile

Fact Sheet

Chemical Formula
CaCu(AsO₄)(OH)
Crystal System
Orthorhombic
Mohs Hardness
4.5 (Mohs)
Density
4.33 g/cm³
Refractive Index
1.778 – 1.846
Provenance
USA (Utah, Arizona), Namibia (Tsumeb), Mexico, Spain
Color Origin
Vivid apple to grass green botryoidal crust

Related Crystals

Stones that share this lattice

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Next in the Atlas

Copper

A conductive metal of body, wire and ritual bowl.