tiemannite

noun

tie·​mann·​ite

ˈtēməˌnīt

plural -s

: a mineral HgSe that is a native mercuric selenide and occurs commonly in dark gray or nearly black masses of metallic luster (specific gravity 8.2–8.5)

Word History

Etymology

German tiemannit, from W. Tiemann, 19th century German scientist who discovered it + German -it -ite

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