What are the two main types of asbestos?

The two main types of asbestos are indeed serpentine and amphiboles. Serpentine asbestos primarily consists of chrysotile, which is the most common type of asbestos used in various applications. This type of asbestos has a curly fiber structure, which makes it more flexible and easier to process. In contrast, amphibole asbestos includes a group of various fiber types characterized by straight, needle-like structures, such as amosite and crocidolite. These fibers are generally considered to be more hazardous due to their shape and durability, which allows them to remain in the lungs for extended periods, potentially increasing health risks.

The other options do not accurately classify asbestos types. Silicate and non-silicate are broader geological classifications related to minerals rather than specific types of asbestos. Natural and synthetic refer to the origin of substances rather than addressing the classification of asbestos fibers. Organic and inorganic distinguish chemical compounds based on their carbon content, which does not apply to the classification of asbestos fibers as they are mineral-based.