petzite

noun

petz·​ite

ˈpetˌsīt

plural -s

: a mineral Ag₃ Au Te₂ consisting of a silver gold telluride that is steel gray to iron black (hardness 2.5–3, specific gravity 8.7–9.0)

Word History

Etymology

German petzit, from W.K.Pecz †1873 Hungarian geologist who analyzed it + German -it -ite

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