Asbestos is a naturally occurring, fibrous material, and there are two main categories of asbestos: amphibole and serpentine. Crocidolite belongs to the amphibole family; others in this family are actinolite, amosite, anthophyllite, and tremolite, and they all have sharp fibers. Chrysotile asbestos is the only category of serpentine asbestos, and it has curly fibers instead. » Read More