Entry № 317
Petrified Ironwood
Silicified fossil wood rich in iron oxides
A forest turned to iron and time.
Chakra
Root
Element
Earth
Zodiac
Capricorn · Taurus

I. The Metaphysical Reading
How the stone has been held.
Petrified ironwood is held as a stone of deep ancestral grounding and patient transformation. Its dense, dark patterns are read as a record of endurance, supporting those who need steadiness through long transitions.
- Chakra
- Root
- Element
- Earth
- Zodiac
- Capricorn · Taurus
- Keynote
- A forest turned to iron and time.
II. The Scientific Reading
What the lattice actually does.
Petrified ironwood is fossil wood in which organic cellulose has been replaced by microcrystalline silica and iron oxides. The iron minerals darken and strengthen the material while preserving original cell structure and growth rings.
- Formula
- SiO₂ (chalcedony/quartz) + Fe₂O₃, Fe₃O₄
- System
- Trigonal / amorphous (microcrystalline silica)
- Hardness
- 6.5 – 7 (Mohs)
- Provenance
- USA (Arizona), Australia, Argentina
References & Sources
Independent mineralogical references used to verify the scientific details above.
Mineral Profile
Fact Sheet
- Chemical Formula
- SiO₂ (chalcedony/quartz) + Fe₂O₃, Fe₃O₄
- Crystal System
- Trigonal / amorphous (microcrystalline silica)
- Mohs Hardness
- 6.5 – 7 (Mohs)
- Density
- 2.60 – 2.80 g/cm³
- Refractive Index
- 1.535 – 1.540
- Provenance
- USA (Arizona), Australia, Argentina
- Color Origin
- Dark brown, black, rust-red, with preserved wood grain
Related Crystals
Stones that share this lattice
Next in the Atlas
Petrified Wood
A tree's memory written in stone.




