Vauquelinite is a complex mineral with the formula copperlead2(chromiumoxygen4)(phosphorus4)(Ohydrogen) making it a combined Chromate ion and phosphate of copper and lead. It forms a series with the arsenate mineral fornacite.[
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It was first described in 1818 in the Beryozovskoye deposit, Urals, Russia, and named for Louis Vauquelin (1763–1829), a French chemist.[ It occurs in Redox hydrothermal ore deposits and is associated with crocoite, pyromorphite, mimetite, cerussite, beudantite and duftite at the type locality in Russia.][
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