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