vəˈlirēˌīt noun
( -s )
Usage: usually capitalized
Etymology: Swedish, valleriit, from G. Wallerius ( Vallerius ) died 1742 Swedish mineralogist + Swedish -it -ite
: a mineral Cu 2 Fe 4 S 7 consisting of sulfide of copper and iron perhaps identical with the artificial compound Cu 3 Fe 4 S 6