(ˌ)bərˈzēlyəˌnīt, -lēəˌ- noun
( -s )
Etymology: Swedish berzelianit, irregular from Baron J. J. Berzelius died 1848 Swedish chemist + Swedish -it -ite
: a mineral Cu 2 Se consisting of copper selenide having a silver-white color when freshly broken (sp. gr. 6.7)