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Entry № 318

Petrified Wood

Silicified fossil wood

A tree's memory written in stone.

Chakra

Root · Heart

Element

Earth

Zodiac

Leo · Capricorn

Petrified Wood

I. The Metaphysical Reading

How the stone has been held.

Petrified wood is considered a stone of slow, steady transformation and connection to ancestral wisdom. It is used for grounding, patience, and remembering that what feels lost can be preserved in new form.

Chakra
Root · Heart
Element
Earth
Zodiac
Leo · Capricorn
Keynote
A tree's memory written in stone.

II. The Scientific Reading

What the lattice actually does.

Petrified wood forms when buried plant material is slowly replaced by silica-rich groundwater, preserving cellular detail through permineralization. The colours come from trace metals: iron (reds/browns), manganese (black), copper (greens/blues).

Formula
SiO₂ (chalcedony, quartz, opal) replacing organic tissue
System
Trigonal / amorphous
Hardness
6.5 – 7 (Mohs)
Provenance
USA (Arizona), Madagascar, Indonesia, Argentina, Brazil

References & Sources

Independent mineralogical references used to verify the scientific details above.

Mineral Profile

Fact Sheet

Chemical Formula
SiO₂ (chalcedony, quartz, opal) replacing organic tissue
Crystal System
Trigonal / amorphous
Mohs Hardness
6.5 – 7 (Mohs)
Density
2.50 – 2.70 g/cm³
Refractive Index
1.535 – 1.540
Provenance
USA (Arizona), Madagascar, Indonesia, Argentina, Brazil
Color Origin
Brown, tan, red, yellow, grey, blue, green; often banded

Related Crystals

Stones that share this lattice

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Next in the Atlas

Phenakite

A deceiver of light, brilliant and clear.