noun \ˈbr-ˌnīt\

Definition of BORNITE

:  a brittle metallic-looking mineral that consists of a sulfide of copper and iron and is a valuable copper ore

Origin of BORNITE

German Bornit, from Ignaz von Born †1791 Austrian mineralogist
First Known Use: circa 1847


noun    (Concise Encyclopedia)

Common copper-ore mineral, copper and iron sulfide (CuFeS). Typical occurrences are found in Mount Lyell, Tasmania; Chile; Peru; and Butte, Mont. Bornite may form isometric crystals but occurs most commonly as irregular masses. Under appropriate geologic conditions, it alters to chalcocite and other copper minerals.


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