Definitions

from The Century Dictionary.

  • noun A sulphid of antimony, lead, and copper, of a steel-gray color and brilliant metallic luster, found in the Harz mountains, Cornwall, and Mexico.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Min.) 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.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun mineralogy A sulfosalt mineral, a sulfantimonite of lead and copper.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Bournon +‎ -ite after French crystallographer and mineralogist Jacques Louis de Bournon (1751–1825).

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Examples

  • Also related: this MathTrek article, Riding on square wheels, showing another nice example of unusual gearing, Stan Wagon's square-wheeled tricycle; and bournonite (aka cogwheel ore).

    Archive 2004-06-01 Ray Girvan 2004

  • Also related: this MathTrek article, Riding on square wheels, showing another nice example of unusual gearing, Stan Wagon's square-wheeled tricycle; and bournonite (aka cogwheel ore).

    Strange gears Ray Girvan 2004

  • Jamesonite, bournonite, and tetrahedrite (sulphantimonides of lead and copper), when found in lead-silver deposits, are to some extent

    The Economic Aspect of Geology 1915

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