The name given to a number of naturally occurring fibrous silicate minerals that have been mined for their useful properties such as thermal insulation, chemical and thermal stability, and high tensile strength. The three most common types are: (a) chrysotile, (b) amosite and (c) crocidolite. Chrysotile, also known as white asbestos and a member of the Serpentine mineral group, is the commonest. Asbestos can only be identified under a microscope. Asbestos is made up of microscopic bundles of fibers that may become airborne when distributed. These fibers get into the air and may become inhaled into the lungs, where they may cause significant health problems. Some of these health problems include (1) asbestosis, (2) mesothelioma, and (3) lung cancer.   Back to Mesothelioma Glossary.