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Entry № 008

Actinolite

Calcium Magnesium Iron Silicate Hydroxide

Green fibre - the composed nerve.

Chakra

Heart

Element

Earth · Water

Zodiac

Scorpio

Actinolite

I. The Metaphysical Reading

How the stone has been held.

Long carried as a stone of steady nerves and expanded awareness. Traditional practice associates actinolite with the strengthening of the aura and with the composure required to hold difficult truths without flinching. Its fibrous, radiating habit is read as an outward reach - energy that leans forward without leaving its centre.

Chakra
Heart
Element
Earth · Water
Zodiac
Scorpio
Keynote
Green fibre - the composed nerve.

II. The Scientific Reading

What the lattice actually does.

Actinolite is an amphibole forming a solid-solution series between magnesian tremolite and iron-rich ferro-actinolite. Colour deepens as Fe²⁺ substitutes for Mg²⁺ in the octahedral sites. In its compact fibrous form it grades into nephrite jade, one of the toughest natural materials known; its asbestiform variety, byssolite, is the same species in a wholly different mechanical regime.

Formula
Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂
System
Monoclinic (amphibole group)
Hardness
5 – 6 (Mohs)
Provenance
Russia (Ural Mts.), Canada, Taiwan, Austria, USA

References & Sources

Independent mineralogical references used to verify the scientific details above.

Mineral Profile

Fact Sheet

Chemical Formula
Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂
Crystal System
Monoclinic (amphibole group)
Mohs Hardness
5 – 6 (Mohs)
Density
3.03 – 3.24 g/cm³
Refractive Index
1.614 – 1.655
Provenance
Russia (Ural Mts.), Canada, Taiwan, Austria, USA
Color Origin
Pale to deep green - chromophoric ferrous iron (Fe²⁺)

Related Crystals

Stones that share this lattice

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Aegirine

The dark blade - a stone of clean severance.