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Entry № 255

Kobyashevite

Cu₅(SO₄)₂(OH)₆·4H₂O

Pale copper sulfate sprays of the oxidised zone.

Chakra

Throat · Heart

Element

Water · Metal

Zodiac

Libra · Aquarius

Kobyashevite

I. The Metaphysical Reading

How the stone has been held.

Kobyashevite is worked with as a specimen stone of fine articulation, held to contemplate how much detail a system can hold before it breaks. Its needle sprays are said to remind the carrier that fragility is not the same as weakness.

Chakra
Throat · Heart
Element
Water · Metal
Zodiac
Libra · Aquarius
Keynote
Pale copper sulfate sprays of the oxidised zone.

II. The Scientific Reading

What the lattice actually does.

Kobyashevite is a rare hydrated copper sulfate hydroxide first described from the Vishnevye Mountains of the Urals, Russia, and named for the mineralogist Yurii Semenovich Kobyashev. It forms delicate acicular blue crystals in the oxidised zone of copper deposits, closely related to devilline and campigliaite. Because it is very soft, water-soluble at the surface and chemically unstable outside its host, it is handled as a locked collector's specimen.

Formula
Cu₅(SO₄)₂(OH)₆·4H₂O
System
Triclinic
Hardness
2 – 2.5 (Mohs)
Provenance
Russia (Vishnevye Mountains, Urals — type locality)

References & Sources

Independent mineralogical references used to verify the scientific details above.

Mineral Profile

Fact Sheet

Chemical Formula
Cu₅(SO₄)₂(OH)₆·4H₂O
Crystal System
Triclinic
Mohs Hardness
2 – 2.5 (Mohs)
Density
3.10 g/cm³
Refractive Index
1.58 – 1.63
Provenance
Russia (Vishnevye Mountains, Urals — type locality)
Color Origin
Pale blue to blue-green fibrous sprays

Related Crystals

Stones that share this lattice

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Kunzite

Pink spodumene named for the gem scholar who found it.