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Delvauxite, also known as borickite, is a yellow to brown to dark brown amorphous mineral, sometimes forming a botryoidal mass. Its chemical formula is CaFe4(PO4,SO4)2OH ⋅ xH2O. It may sometimes form stalactites.

Found in Bernau, Liege, Belgium and Stredocesky, Czech republic.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Delvauxite". A list of authors is available in Wikipedia.
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