Category Tectosilicate Strunz classification 9.GA.15 Optical properties Biaxial (-) | Formula
(repeating unit) BaAl2Si3O10·4H2O Mohs scale hardness 4 - 5 | |
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Crystal system Orthorhombic, some are tetragonal | ||
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.
Whilst some claim it was named after Scottish mineral collector James Edington (1787–1844), most sources (including the knowledgable mineralogist Haidinger) credit Thomas Edington FRSE (1814-1859), a Scottish geologist and mineralogist of greater fame.
References
Edingtonite Wikipedia(Text) CC BY-SA