BORNITE


Meaning of BORNITE in English

Common copper-ore mineral, copper and iron sulfide (Cu 5 FeS 4 ).

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.

Britannica Concise Encyclopedia.      Краткая энциклопедия Британика.