natrolite
natrolite
natrolite (Na2Al2Si3O10.2H2O) Hydrated silicate mineral, hydrous sodium aluminium silicate. It has orthorhombic system, needle-like crystals, with radiating nodules or compact fibrous masses. It is colourless or white, glassy and brittle. Hardness 5–5.5; r.d. 2.2. See also zeolite
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Natrolite
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Natrolite