edingtonite
Sign in to saveEdingtonite is a white, gray, brown, colorless, pink or yellow zeolite mineral. Its chemical formula is BaAl2Si3O10·4H2O. It has varieties with tetragonal, orthorhombic or triclinic crystals.
Key facts
- Mineral.name
- Edingtonite
- Mineral.image
- Edingtonite-120476.jpg
- Mineral.imagesize
- 260px
- Mineral.caption
- Edingtonite from Ice River Alkaline Complex, Golden Mining Division, British Columbia, Canada
- Mineral.category
- Tectosilicate minerals
- Mineral.group
- Zeolite group
- Mineral.formula
- BaAl2Si3O10·4H2O
- Mineral.IMAsymbol
- Edi
- Mineral.strunz
- 9.GA.15
- Mineral.color
- White, gray, pink
- Mineral.habit
- Prismatic pseudotetragonal crystals; massive.
- Mineral.system
- Orthorhombic
- Mineral.twinning
- On [110] and [001]
- Mineral.cleavage
- Perfect on [110]
- Mineral.mohs
- 4 - 4.5
- Mineral.gravity
- 2.73 - 2.78
- Mineral.opticalprop
- Biaxial (-)
- Mineral.refractive
- nα = 1.538 nβ = 1.549 nγ = 1.554
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Edingtonite is a white, gray, brown, colorless, pink or yellow zeolite mineral. Its chemical formula is BaAl2Si3O10·4H2O. It has varieties with tetragonal, orthorhombic or triclinic crystals.
The mineral occurs within cavities in nepheline syenites, carbonatites, in hydrothermal veins and various mafic rocks. It occurs associated with thomsonite, analcime, natrolite, harmotome, brewsterite, prehnite and calcite.
Excerpted from Wikipedia’s “edingtonite” article, available under the CC BY-SA 4.0 licence.