dufrenoysite

noun

du·​fre·​noy·​site

ˌd(y)üfrəˈnȯiˌzīt

plural -s

: a lead-gray mineral Pb₂As₂S₅ consisting of a compound of lead arsenic sulfide occurring in orthorhombic crystals or massive

Word History

Etymology

French dufrénoysite, irregular from O.P.A. Petit-Dufrénoy + French -ite

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