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Entry № 024

Apatite

Calcium Phosphate with F, Cl, or OH

The mineral of teeth, bone, and clear speech.

Chakra

Throat · Third Eye

Element

Air · Water

Zodiac

Gemini · Pisces

Apatite

I. The Metaphysical Reading

How the stone has been held.

Apatite is regarded as a stone of clear articulation and unhurried motivation. Practitioners place blue apatite at the throat to steady honest speech and green apatite at the solar plexus to steady the will, both varieties associated with the quiet discipline of finishing what has been started.

Chakra
Throat · Third Eye
Element
Air · Water
Zodiac
Gemini · Pisces
Keynote
The mineral of teeth, bone, and clear speech.

II. The Scientific Reading

What the lattice actually does.

Apatite is the calcium-phosphate mineral group that gives tooth enamel and bone their strength, making it the most abundant phosphorus mineral in the crust. The three end members (fluor-, chlor-, and hydroxylapatite) form a continuous series distinguished by the anion in the crystal channel. Gem apatite owes its saturated colours to trace rare-earth ions and manganese, with the electric teal Madagascan material coloured by Mn⁵⁺.

Formula
Ca₅(PO₄)₃(F,Cl,OH)
System
Hexagonal
Hardness
5 (Mohs)
Provenance
Brazil, Madagascar, Mexico, Russia (Kola), Canada, Myanmar

References & Sources

Independent mineralogical references used to verify the scientific details above.

Mineral Profile

Fact Sheet

Chemical Formula
Ca₅(PO₄)₃(F,Cl,OH)
Crystal System
Hexagonal
Mohs Hardness
5 (Mohs)
Density
3.16 – 3.22 g/cm³
Refractive Index
1.632 – 1.667
Provenance
Brazil, Madagascar, Mexico, Russia (Kola), Canada, Myanmar
Color Origin
Blue, green, yellow, violet, or colourless, from rare-earth and Mn substitution

Related Crystals

Stones that share this lattice

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