Which statement correctly matches asbestos type to its mineral class?

• A. Amosite and Crocidolites are amphiboles; Chrysotile is serpentine.
• B. Chrysotile is serpentine; Amosite and Crocidolites are amphiboles.
• C. Chrysotile and Amosite are serpentine; Crocidolite is amphibole.
• D. All three are serpentine.

Answer: (B)

Asbestos minerals divide into two mineral classes: serpentine and amphibole. Chrysotile belongs to the serpentine group, and it is the only asbestos mineral in that group. Amosite and crocidolite are in the amphibole group. So the statement that correctly matches the type to its class is: Chrysotile is serpentine; Amosite and Crocidolite are amphiboles. This clarifies why an option claiming all three are serpentine would be incorrect, and why misclassifying any of the two amphiboles would be wrong.