Bornite

минералогия борнит, пестрая медная руда

Англо-русский научно-технический словарь

Bornite

noun Etymology: German Bornit, from Ignaz von Born died 1791 Austrian mineralogist a brittle metallic-looking mineral that consists of a sulfide of copper and iron and is a valuable copper ore

Энциклопедический словарь Мерриама-Вебстера