Noun
A common mineral embracing many varieties varying in color and in composition. It occurs in monoclinic crystals; also massive, generally with fibrous or columnar structure. The color varies from white to gray, green, brown, and black. It is a silicate of magnesium and calcium, with usually aluminium and iron. Some common varieties are tremolite, actinolite, asbestus, edenite, hornblende (the last name being also used as a general term for the whole species). Amphibole is a constituent of many crystalline rocks, as syenite, diorite, most varieties of trachyte, etc. See Hornblende.
Source: Webster's dictionaryBecause the citric acid cycle is involved in both catabolic and anabolic processes, it is known as an amphibole pathway. Source: Internet
Chrysotile, a species of serpentine, is the most common mineral species in industrial asbestos, as it is less dangerous in terms of health than the amphibole asbestos. Source: Internet
Dyar and Gunter, pp. 112 Several amphibole mineral species can have an asbestiform crystal habit. Source: Internet