1863 H. WattsDict. Chem. I. 1042 When cobalt is fused with silver, two layers are formed, the lower consisting of cobaltiferous silver, the upper of argentiferous cobalt.
1879 J. J. YoungCeramic Art 175 The cobaltiferous ore.
This entry has not yet been fully updated (first published 1891; most recently modified version published online September 2018).