The Analcite reference article from the English Wikipedia on 24-Apr-2004
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Analcite

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Analcite or analcime (from the Greek analkimos - "weak") is a white, grey, or colourless zeolite mineral. Analcite consists of hydrated sodium aluminium silicate in cubic crystalline form. Its chemical formula is NaAlSi2O6·H2O.

See also: List of minerals