BOURNONITE


Meaning of BOURNONITE in English

( n. )

A mineral of a steel-gray to black color and metallic luster, occurring crystallized, often in twin crystals shaped like cogwheels (wheel ore), also massive. It is a sulphide of antimony, lead, and copper.

Webster's Revised Unabridged English Dictionary.      Пересмотренный полный словарь английского языка Webster.