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Definition of Amphibole
Am´phi`bole Pronunciation: ăm´fĭ`bōl | n. | 1. | (Min.) 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. |
Related Words
actinolite, amphibole group, amphibolite, anthophyllite, asbestos, hornblende, mineral, nephrite
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