Entry № 186
Erionite
Erionite
A woollen zeolite handled only behind glass.
Chakra
None assigned — collectors' specimen
Element
Air · Earth
Zodiac
None traditional

I. The Metaphysical Reading
How the stone has been held.
Erionite is discussed in metaphysical writing chiefly as a warning: it is one of the very few minerals that responsible practitioners refuse to work with directly. It is kept behind glass, and any teaching drawn from it is a teaching about consent, care and the ethical limits of a practice.
- Chakra
- None assigned — collectors' specimen
- Element
- Air · Earth
- Zodiac
- None traditional
- Keynote
- A woollen zeolite handled only behind glass.
II. The Scientific Reading
What the lattice actually does.
Erionite is a fibrous hexagonal zeolite chemically similar to offretite, formed by the alteration of volcanic tuffs by alkaline groundwater. Its fibres are classified as a Group 1 human carcinogen by the IARC and are the confirmed cause of endemic mesothelioma clusters in Cappadocian villages built from erionite-bearing tuff; specimens must not be handled, cut, polished or worn.
- Formula
- (Na₂,K₂,Ca)₄Al₈Si₂₈O₇₂·28H₂O (zeolite group)
- System
- Hexagonal
- Hardness
- 3.5 – 4 (Mohs)
- Provenance
- USA (Oregon, Nevada), Turkey (Cappadocia), New Zealand
References & Sources
Independent mineralogical references used to verify the scientific details above.
Mineral Profile
Fact Sheet
- Chemical Formula
- (Na₂,K₂,Ca)₄Al₈Si₂₈O₇₂·28H₂O (zeolite group)
- Crystal System
- Hexagonal
- Mohs Hardness
- 3.5 – 4 (Mohs)
- Density
- 2.02 – 2.13 g/cm³
- Refractive Index
- 1.468 – 1.478
- Provenance
- USA (Oregon, Nevada), Turkey (Cappadocia), New Zealand
- Color Origin
- White to pale cream fibrous tufts on volcanic matrix
Related Crystals
Stones that share this lattice
Next in the Atlas
Erythrite
The magenta warning-flag of buried cobalt.




