/bawr"neuh nuyt', bohr"-, boor"-/ , n. Mineral.
a sulfide of lead, antimony, and copper, PbCuSbS 3 , occurring in gray to black crystals or granular masses. Also called cogwheel ore .
[ 1795-1805; named after Count J. L. de Bournon (d. 1825), French mineralogist; see -ITE 1 ]