from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A monoclinic-prismatic mineral containing aluminum, hydrogen, iron, magnesium, oxygen, and silicon.

from the GNU version of the Collaborative International Dictionary of English

  • n. a greenish gray or black silicate of iron and aluminum.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a greenish grey or black silicate of iron and aluminum


-ite (Wiktionary)


  • Iron likewise combines with a considerable variety of substances other than oxygen; and some of these compounds, as for instance iron carbonate (siderite), iron silicate (chamosite, glauconite, etc.), and iron sulphide (pyrite), are locally mined as iron ores.

    The Economic Aspect of Geology


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