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Entry № 034

Aurichalcite

Basic Zinc Copper Carbonate

Feather-tufts the colour of morning sky.

Chakra

Throat · Heart

Element

Water · Air

Zodiac

Pisces · Aquarius

Aurichalcite

I. The Metaphysical Reading

How the stone has been held.

Aurichalcite is worked with as a stone of soft, honest communication, especially where fear has kept a truth unspoken for a long time. Practitioners keep it near the throat during writing or difficult conversation, and associate its feather-like habit with words offered rather than pushed.

Chakra
Throat · Heart
Element
Water · Air
Zodiac
Pisces · Aquarius
Keynote
Feather-tufts the colour of morning sky.

II. The Scientific Reading

What the lattice actually does.

Aurichalcite is a secondary basic carbonate of zinc and copper that forms in the oxidised zone of base-metal deposits, most often as fragile silky tufts of pale blue acicular crystals on limonite or matrix. Because its hardness is only 1 to 2 the crystals are easily crushed, and specimens are prized as much for their delicacy as their colour. Classic sources include the Kelly Mine in New Mexico, Bisbee in Arizona, and the ancient slag heaps of Laurion in Greece.

Formula
(Zn,Cu)₅(CO₃)₂(OH)₆
System
Monoclinic
Hardness
1 – 2 (Mohs)
Provenance
USA (Arizona, New Mexico), Mexico, Greece (Laurion), Namibia

References & Sources

Independent mineralogical references used to verify the scientific details above.

Mineral Profile

Fact Sheet

Chemical Formula
(Zn,Cu)₅(CO₃)₂(OH)₆
Crystal System
Monoclinic
Mohs Hardness
1 – 2 (Mohs)
Density
3.96 g/cm³
Refractive Index
1.654 – 1.740
Provenance
USA (Arizona, New Mexico), Mexico, Greece (Laurion), Namibia
Color Origin
Pale sky blue to greenish blue in silky acicular tufts

Related Crystals

Stones that share this lattice

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Autunite

The green fire that must be watched from a distance.