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Natrolite VIII - Tectosilicates (Zeolite Group)

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Name		Natrolite
Chemistry		Na2[Al2Si3O10]·2H2O
Hardness		5 - 5.5
Lustre		vitreous - silky
Colour		white, colourless, grey white, yellowish white, reddish white
Streak		white
Density [g/cm3]		2.2 - 2.4
Crystal habit		orthorhombic, crystals prismatic, acicular
Cleavage, Fracture		[110] perfect, [010] imperfect, fracture conchoidal
other characteristics and occurrences		solid solution series natrolite = Na-bearing (Na2[Al2Si3O10]·2H2O) scolecite = Ca-bearing (Ca[Al2Si3O10]·3H2O) fibrous, radiating, masive, in cavities of basalts, phonolites, syenites

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© 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst

These recommendations are believed to be correct. However, no guarantee of their accuracy is given. Therefore, purchasers shall make their own tests to determine suitability for their use. These products are offered for industrial and related uses (e.g. research and development) only. However the user must take the necessary precautions appropriate for products containing chemicals. This description does not imply the absence of any patents, the responsibility whatsoever solely rests with the user.