Bournonite

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Bournonite \Bour"non*ite\, n. [Named after Count Bournon, a
     mineralogist.] (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.


     [1913 Webster]