cobaltite
noun
co·balt·ite ˈkō-ˌbȯl-ˌtīt 
kō-ˈbȯl-
variants or cobaltine
ˈkō-ˌbȯl-ˌtēn
kō-ˈbȯl-
: a grayish to silver-white mineral consisting of a sulfur arsenide of cobalt also containing iron and sometimes nickel and used in pigments
Word History
Etymology
cobaltite, alteration of cobaltine, from French, from cobalt
First Known Use
1868, in the meaning defined above