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n. Any of a large group of structurally similar hydrated double silicate minerals, such as hornblende, containing various combinations of sodium, calcium, magnesium, iron, and aluminum.

n. A large group of structurally similar hydrated double silicate minerals, containing various combinations of sodium, calcium, magnesium, iron, and aluminium/aluminum

n. 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.

n. A name given by Haüy to hornblende, from its resemblance to augite, for which it may readily be mistaken: now used as a general term to include all the varieties of which common hornblende is one. See hornblende.

n. a mineral or mineral variety belonging to the amphibole group

"Prolonged exposure to one variety, called amphibole fibers, appears to bring serious tissue damage and cancer."

mineral   

amphibole granite    soda amphibole   

hornblende   

asbestos    actinolite    nephrite    hornblende    anthophyllite    tremolite    asbestus    edenite   

amphibolite