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Brief Description: Common name of group of phyllosilicate minerals with fibrous form that from a chemical point of view are hydrous silicate compounds of calcium and mainly magnesium. They come from serpentine alteration resulting in their fibrous form. In nature, asbestos occurs in two basic mineral forms: a) Chrysotile asbestos, which is obtained from serpentine transformation, with typical fibrous structure and silky lustre. It constitutes the most important source of asbestos and b) Amphibole, which consists of hydrous silicates of magnesium, calcium and iron. The principal mineralogical forms are: crocidolite, amosite, anthophyllite, actinolite asbestos, tremolite. 
Bibliography: Ευρετήριο ορυκτών ΑΠΘ στην ιστοσελίδα http://www.geo.auth.gr/106/az_gr.htm Τσιραμπίδης Α. (2005). Ο ορυκτός πλούτος της Ελλάδας. Εκδόσεις Γιαχούδη Θεσσαλονίκη, σελ. 391.Berry, L.G., Mason, B. and Dietrich, R.V. (1983). Mineralogy. W. H. Freeman and Company, San Francisco, 561 pp. Σαπουντζής, Η. και Χριστοφίδης, Γ. (1985). Ορυκτοδιαγνωστική. University Studio Press, Θεσσαλονίκη, 241 σ.