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Entry № 252

Kämmererite

(Mg,Fe²⁺)₅(Al,Cr³⁺)(Si₃Al)O₁₀(OH)₈

Chromium-rich clinochlore in violet crystal fans.

Chakra

Crown · Third Eye

Element

Air · Earth

Zodiac

Sagittarius · Pisces

Kämmererite

I. The Metaphysical Reading

How the stone has been held.

Kämmererite is worked with as a stone of quiet visionary work, held for meditation, gentle divination and the closing of overactive third eyes at the end of a long day. It is said to soften psychic input into something the carrier can actually digest.

Chakra
Crown · Third Eye
Element
Air · Earth
Zodiac
Sagittarius · Pisces
Keynote
Chromium-rich clinochlore in violet crystal fans.

II. The Scientific Reading

What the lattice actually does.

Kämmererite is the chromium-rich variety of clinochlore, a member of the chlorite group of sheet silicates. Chromium substitution for aluminium in the octahedral layer produces its distinctive violet to raspberry colour. It occurs in serpentinites and chromite-bearing ultramafic rocks; the Kop Krom chromium mine in eastern Turkey has produced the finest gemmy crystals. Because it is very soft and cleavable, it is a display specimen rather than a wearable stone.

Formula
(Mg,Fe²⁺)₅(Al,Cr³⁺)(Si₃Al)O₁₀(OH)₈
System
Monoclinic (chlorite group, chromian clinochlore)
Hardness
2 – 2.5 (Mohs)
Provenance
Turkey (Kop Krom mine), Russia (Ural Mountains), USA (Pennsylvania)

References & Sources

Independent mineralogical references used to verify the scientific details above.

Mineral Profile

Fact Sheet

Chemical Formula
(Mg,Fe²⁺)₅(Al,Cr³⁺)(Si₃Al)O₁₀(OH)₈
Crystal System
Monoclinic (chlorite group, chromian clinochlore)
Mohs Hardness
2 – 2.5 (Mohs)
Density
2.6 – 2.7 g/cm³
Refractive Index
1.57 – 1.60
Provenance
Turkey (Kop Krom mine), Russia (Ural Mountains), USA (Pennsylvania)
Color Origin
Deep magenta-violet to rose-pink from chromium content

Related Crystals

Stones that share this lattice

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Azure copper silicate of the Arizona skarns.