Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of bournonite is as below...

Bournonite :: Bournonite (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..

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