kupfferiten.
/ˈkʊpfərʌɪt/ Mineralogy.
An emerald-green form of magnesium silicate coloured by chromium.
ΚΠ
1868 J. D. Dana Syst. Mineral. (ed. 5) 231 The original kupfferite, from a graphite mine in the Tunkinsk Mts., is a chromiferous amphibole.
This entry has not yet been fully updated (first published 1901; most recently modified version published online March 2022).
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n.1868