1. Plural of covellite; a mineral form of copper sulfide (CuS) that typically occurs as hexagonal crystals with a metallic luster, used as an ore of copper.
Usage: mineralogy; technical

Examples

• Covellites are commonly found in the secondary enrichment zones of copper deposits.
• The geologist identified several specimens of covellites in the ore sample.
• Covellites display a distinctive indigo-blue color that makes them recognizable in the field.
• Mining operations extract covellites as part of copper ore processing.
• The crystal structure of covellites has been extensively studied by mineralogists.