pyrite

  1. Noun.  (mineralogy) The common mineral iron disulfide (FeS2), of a pale brass-yellow color and brilliant metallic luster, crystallizing in the isometric system.
  2. Noun.  (''usually as a plural: '''pyrites''''') Any metallic-looking sulphide, such as the above, which is the most common.
  3. Noun.  (context, solid state) (''usually as a plural: '''pyrites''''') Any metal dichalcogenide that is isostructural to the common mineral.

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This entry was last updated on RefTopia from its source on 3/20/2012.