Entry № 121
Cyanotrichite
Hydrated Copper Aluminium Sulfate Hydroxide
A fibrous sky-blue tuft from the copper margins.
Chakra
Throat
Element
Water · Air
Zodiac
Pisces

I. The Metaphysical Reading
How the stone has been held.
Cyanotrichite is worked with as a stone of gentle articulation, kept nearby during writing days, letters of apology and the small careful sentences that repair a relationship. Practitioners hold it as a reminder that softness carries further than volume.
- Chakra
- Throat
- Element
- Water · Air
- Zodiac
- Pisces
- Keynote
- A fibrous sky-blue tuft from the copper margins.
II. The Scientific Reading
What the lattice actually does.
Cyanotrichite is a rare hydrated copper aluminium sulfate that forms as delicate acicular tufts in the oxidised zones of copper deposits. Its name derives from Greek kyanos (blue) and thrix (hair), describing the mineral's fibrous, silky sky-blue crystals. Specimens are fragile and best displayed in enclosed cases.
- Formula
- Cu₄Al₂(SO₄)(OH)₁₂·2H₂O
- System
- Orthorhombic
- Hardness
- 2 (Mohs)
- Provenance
- France (Cap Garonne), Namibia (Tsumeb), USA (Arizona – Grandview Mine), Kazakhstan
References & Sources
Independent mineralogical references used to verify the scientific details above.
Mineral Profile
Fact Sheet
- Chemical Formula
- Cu₄Al₂(SO₄)(OH)₁₂·2H₂O
- Crystal System
- Orthorhombic
- Mohs Hardness
- 2 (Mohs)
- Density
- 2.74 – 2.95 g/cm³
- Refractive Index
- 1.588 – 1.655
- Provenance
- France (Cap Garonne), Namibia (Tsumeb), USA (Arizona – Grandview Mine), Kazakhstan
- Color Origin
- Sky-blue to azure acicular fibrous tufts on matrix
Related Crystals
Stones that share this lattice
Next in the Atlas
Danburite
A clear boron gemstone of pale-lit clarity.




