Asbestosis is a chronic disease characterized by scarring in the lungs, which leads to long-term breathing complications. It is caused exclusively by exposure to asbestos, but it is usually not diagnosed until decades after the exposure occurred.Asbestos definition, a fibrous mineral, either amphibole or chrysotile, formerly used for making incombustible or fireproof articles. See more.Asbestos is a group of minerals that occur naturally as bundles of fibers. These fibers are found in soil and rocks in many parts of the world. They are made mainly of silicon and oxygen, but they also contain other elements. There are 2 main types of asbestos:definitions. asbestos includes chrysotile, amosite, crocidolite, tremolite asbestos, anthophyllite asbestos, actinolite asbestos, and any of these minerals that have been chemically treated and/or altered. Asbestos-containing material (ACM) means any material containing more than 1% asbestos.1. Any of six incombustible chemical-resistant silicate minerals, including one serpentine (chrysotile) and five amphiboles (amosite, crocidolite, and fibrous forms of actinolite, anthophyllite, and tremolite), that separate easily into long, thin, flexible fibers and that have been widely used commercially in products such as fireproofing, electrical insulation, building materials, brake.Asbestos is a natural mineral that has been mined and used for centuries because of its durability, heat and chemical resistance. Long considered a "miracle" mineral, asbestos has been utilized in thousands of products, in everything from insulation and other construction materials to car brakes and hair dryers.Asbestos What is asbestos? Asbestos is the name for a group of minerals that occur naturally in the ground. Bundles of fibers make up asbestos minerals.Asbestos contains a group of six fibrous minerals: actinolite, amosite, anthophyllite, chrysotile, crocidolite, and tremolite. Naturally occurring in some rocks and soil, fibers vary in length and may be curled or straight. They are resistant to heat and most chemicals.Asbestos NESHAP Program Contact: See AQD Contact List Below Agency:. Environment, Great Lakes, and Energy The air quality division (aqd) of the DEQ has been delegated to implement the National Emission Standards for Hazardous Air Pollutants (NESHAP) program for asbestos in the state of Michigan.As Quebec’s independent environmental review agency prepares to examine controversial new projects to extract valuable commodities from asbestos mining residues, anti-asbestos activists say the agency.