|   | FeAl2(PO4)2(OH)2 .8H2OThis sample of paravauxite is displayed in the Smithsonian Museum of Natural History. Paravauxite is a phosphate mineral of iron  and aluminum with the composition FeAl2(PO4)2(OH)2.8H2O.  The sample at left is about 12 cm across and is from Llallagua, Potosi, Bolivia.   |