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Tremolite is a member of the amphibole group of silicate minerals with composition: Ca2Mg5Si8O22(OH)2. Tremolite forms by metamorphism of sediments rich in dolomite and quartz. Tremolite forms a series with actinolite and ferro-actinolite. Pure magnesium tremolite is creamy white, but the color grades to dark green with increasing iron content. It has a hardness on Mohs' scale of 5 to 6.
Additional recommended knowledge
A fibrous variety of tremolite is used as asbestos. This material is toxic and inhaling the fibers can lead to asbestosis, lung cancer and mesothelioma. One of the two minerals of the gemstone jade is nephrite, a green variety of tremolite.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Tremolite". A list of authors is available in Wikipedia.|