bournonite Min.
(ˈbʊənənaɪt)
[f. the name of its discoverer, Count Bournon]
Antimonial sulphide of lead and copper; a brittle opaque mineral with metallic lustre.
| 1805 R. Jameson Syst. Min. II. 579 (Dana) Bournonite, Antimonial lead ore. 1863–79 Watts Dict. Chem., Bournonite..is found in the copper mines of Cornwall. |