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Noun: pyrites  pI'rI-teez
  1. Any of various metallic-looking sulfides (of which pyrite is the commonest)
Noun: pyrite  'pI,rIt
  1. A common mineral (iron disulfide) that has a pale yellow colour
    - iron pyrite, fool's gold

Type of: mineral, sulfide [N. Amer], sulphide [Brit, Cdn]

Encyclopedia: Pyrites, New York

Pyrite