am·phi·bole /ˈæm(p)fəˌbol/
 角閃石


 am·phi·bole /ˈæm(p)fəˌbol/ 名詞



 Am·phi·bole n.  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.

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