augite Meaning, Definition & Usage

  1. noun dark-green to black glassy mineral of the pyroxene group containing large amounts of aluminum and iron and magnesium

WordNet

Au"gite noun
Etymology
L. augites, Gr. , fr. brightness: cf. F. augite.
Definitions
  1. 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.

Webster 1913