Asbestos is classified into six types, divided into two main groups: serpentine (chrysotile) and amphibole (crocidolite, amosite, tremolite, anthophyllite, actinolite). Classification and Characteristics Serpentine Asbestos Chrysotile (white asbestos): The only member of the serpentine group, chrysotile fibers are curly, flexible, and can be woven into fabrics. It was the most widely used type, accounting for 90–95% of asbestos in buildings and products. Common applications included roofing sheets, ceiling panels, wall plaster, brake linings, pipe insulation, and gaskets. Chrysotile is considered less hazardous than amphibole types but is still a proven carcinogen, capable of causing mesothelioma, lung cancer, and asbestosis The Mesothelioma Center The Mesothelioma Center +2 . Amphibole Asbestos Crocidolite (blue asbestos): Fibers are fine, straight, and needle-like, making them highly hazardous. Historically used in insulation, early gas masks, and even cigarette filters, crocidolite is strongly associated with mesothelioma The Mesothelioma Center The Mesothelioma Center +2 . Amosite (brown asbestos): Fibers are straight and brittle, commonly used in thermal insulation, ceiling tiles, and fireproofing materials. It is also linked to serious respiratory diseases The Mesothelioma Center The Mesothelioma Center +2 . Tremolite, Anthophyllite, Actinolite: Less commonly used industrially, these amphibole types can still be found in insulation, construction materials, and some consumer products. They have fibrous, elongated crystals and are capable of causing cancer and autoimmune conditions The Mesothelioma Center The Mesothelioma Center +1 . Health Risks All types of asbestos are hazardous. Inhaled fibers can become lodged in the lungs, causing irritation and potentially leading to mesothelioma, lung cancer, and asbestosis. Amphibole fibers are generally more dangerous due to their shape and durability, but even minimal exposure to chrysotile is considered unsafe The Mesothelioma Center The Mesothelioma Center +2 . Summary Serpentine group: Chrysotile (white asbestos) – flexible, curly fibers, widely used. Amphibole group: Crocidolite (blue), Amosite (brown), Tremolite, Anthophyllite, Actinolite – straight, needle-like fibers, more hazardous. Understanding these types is crucial for occupational safety, building management, and asbestos abatement, as professional assessment is required to identify and safely handle asbestos-containing materials amg.org.uk amg.org.uk +1 .