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. It was named for Scottish mineral collector James Edington (1787–1844). ...
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http://en.wikipedia.org/wiki/Edingtonite
• (n.) A grayish white zeolitic mineral, in tetragonal crystals. It is a hydrous silicate of alumina and baryta.
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http://thinkexist.com/dictionary/meaning/edingtonite/
Ed'ing·ton·ite noun (Min.) A grayish white zeolitic mineral, in tetragonal crystals. It is a hydrous silicate of alumina and baryta.
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http://www.encyclo.co.uk/webster/E/9
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