- Cabinet, 11.2 x 10.3 x 3.4 cm
- Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosi Department, Bolivia
A rich plate with dozens of sharp, translucent, beautiful crystals running all over it, to 1.2 cm in length; and many of which are doubly-terminated. A vein of some white phosphate material runs through the middle. Almost certainly this was field-collected on one of the famous Vaux expeditions in the early 1900s. TYPE LOCALITY MATERIAL: Paravauxite was described in 1922. Ex. Philadelphia Academy of Sciences Collection.