Augite

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Augite \Au"gite\ ([add]"j[imac]t), n. [L. augites, Gr.
     a'ygi`ths, fr. a'ygh` brightness: cf. F. augite.]
     A variety of pyroxene, usually of a black or dark green
     color, occurring in igneous rocks, such as basalt; -- also
     used instead of the general term pyroxene.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  augite
       n : dark-green to black glassy mineral of the pyroxene group
           containing large amounts of aluminum and iron and
           magnesium