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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)2(OH)8•(4-6)H2O. It may sometimes form stalactites.
- http://www.webmineral.com/data/Delvauxite.shtml Webmineral
- http://rruff.geo.arizona.edu/doclib/hom/delvauxite.pdf Handbook of Mineralogy
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