Chemical formula of asbestos

Chemical formula of asbestos:
Many people have questioned regarding chemical formula for asbestos.
Asbestos is composed of minerals, known since antiquity, with long, thin fibrous crystals. It is not an element.
well it depends on the type:
Chrysotile,(white in color) , CAS No. 12001-29-5, is obtained from serpentinite rocks which are common throughout the world. Its idealized chemical formula is Mg3(Si2O5)(OH)4.
Amosite, (brown in color) ,CAS No. 12172-73-5, is a trade name for the amphiboles belonging to the cummingtonite-grunerite solid solution series, commonly from Africa, named as an acronym from Asbestos Mines of South Africa. One formula given for amosite is Fe7Si8O22(OH)2.
Crocidolite, (blue in color) ,CAS No. 12001-28-4 is an amphibole found primarily in southern Africa, but also in Australia. It is the fibrous form of the amphibole riebeckite. One formula given for crocidolite is Na2Fe2+3Fe3+2Si8O22(OH)2.
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Article publié pour la première fois le 21/03/2013

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