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English word
WORDNET DICTIONARY
Noun Amphibole has 1 sense
- amphibole(n = noun.substance) - a mineral or mineral variety belonging to the amphibole group; is a kind of mineral
is a member of amphibole group
has particulars: nephrite, actinolite, anthophyllite, asbestos, hornblende
CIDE DICTIONARY
Amphibole, n. [Gr. 'amfi`bolos doubtful, equivocal, fr. 'amfiba`llein to throw round, to doubt: cf. F. amphibole. HaÜy so named the genus from the great variety of color and composition assumed by the mineral.].
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. [1913 Webster]