Asbestos, Amphibole

**Definition:** A class of asbestos that includes silicates of magnesium, iron, calcium, and sodium. The fibers are generally brittle and cannot be spun, but are more resistant to chemicals and heat than ASBESTOS, SERPENTINE. (From Hawley's Condensed Chemical Dictionary, 11th ed)

**Tree numbers:** - D01.578.725.050.050 - D01.837.725.700.760.070.050

**Synonyms:** - Amphibole Asbestos - Asbestos, Amphibole-group Minerals