A rare copper-iron arsenide mineral with the chemical formula Cu₃As, found in some hydrothermal ore deposits.
Named after the Russian mineralogist Nikolai Domeyko in the 19th century, using the -ite suffix (common for minerals). The etymology honors the scientist who studied mineral composition.
Domeykite is named after Nikolai Domeyko, a Polish-born scientist who left Europe to teach mineralogy in South America—his legacy is written into the mineral names discovered in those regions.
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