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Natrolite is a colourless, white, or yellow zeolite mineral consisting of sodium aluminium silicate in the form of needle-like orthorhombic crystals and a relative hardness of 6. Natrolite is most often found in cavities in basalt. It is formed through the alteration of plagioclase feldspar, nepheline or sodalite.
Natrolite was confirmed as a distinct species in 1803.
 Research Natrolite
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The Probert Encyclopaedia was designed, edited and programed by
Matt and Leela Probert
©1993 - 2009 The Probert Encyclopaedia
Southampton, United Kingdom
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