copper pyrites
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noun Mineralogy.
Origin of copper pyrites
First recorded in 1770–80
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for copper pyrites
Historical Examples of copper pyrites
Thallium is a widely-diffused metal, being found in many minerals, particularly in iron- and copper-pyrites and native sulphur.
Cooley's Practical Receipts, Volume IIArnold Cooley
copper pyrites
noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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