chalcopyrite


Concise Oxford English Dictionary © 2008 Oxford University Press:
chalcopyrite /ˌkalkə(ʊ)ˈpʌɪrʌɪt/
noun a yellow mineral consisting of a sulphide of copper and iron, the principal ore of copper.
– origin C19: from mod. L. chalcopyrites, from Gk khalkos ‘copper’ + puritēs (see pyrites).
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