Cobalt is found in the minerals cobaltite, smaltite and erythrite. |
It usually occurs in the form of a compound with its most common minerals being cobaltite, smaltite, chloranthite, and linnaeite. |
The primary ores of cobalt are cobaltite, erythrite, and smaltite. |
It was smaltite, an ore of the metal cobalt, closely resembling many of the silver ores. |