kupfferiteMin.|ˈkʊpfəraɪt| [Named, 1862, after Prof. A. T. Kupffer: see -ite1.] An emerald-green form of magnesium silicate coloured by chromium. 1868Dana Min. (ed. 5) 231 The original kupfferite, from a graphite mine in the Tunkinsk Mts., is a chromiferous amphibole.