Augite

[ɒ:dʒait]

Definition

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

Edited by Emily--From WordNet

Definition

(n.) 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.

Checked by Juliana

Definition

n. one of the Pyroxene group of minerals closely allied to hornblende usually of a greenish colour occurring crystallised in prisms and forming an essential component of many igneous rocks.—adj. Augit′ic.

Checked by Adelaide