Delvauxite

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Delvauxite, also known as borickite, is a yellow to brown to dark brown amorphous mineral, sometimes forming a botryoidal mass.[1] Its chemical formula is CaFe4(PO4,SO4)2(OH)8•(4-6)H2O.[2] It may sometimes form stalactites.

It was first described in 1838 by Belgian chemist, Dumont and dedicate to J.S.P.J. Delvaux de Feuffe (1782–1863).[1] It was found in Bernau, Liege, Belgium and Stredocesky, Czech republic.[2]

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