Hypertext Webster Gateway: "augite"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
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.
From WordNet (r) 1.7 (wn)
augite
n : dark-green to black glassy mineral of the pyroxene group
containing large amounts of aluminum and iron and
magnesium
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