melaconite Min.
(mɪˈlækənaɪt)
[Altered from prec.: see -ite.]
An earthy black oxide of copper, found also in crystals. See tenorite.
| 1850 Dana Syst. Min. (1854) II. 518. 1865 Rep. Brit. Assoc., Sections 33 Crystals of oxide of copper (melaconite). |