Many patches of gold in crystaline quartz with a few stannite crystals.
1229 Vauxite, Paravauxite, Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province (Bustillos Province), Potosi Department, Bolivia
Type Locality for both species. Light blue vauxite and aqua green paravauxite. Ex Trevor Boyd Collection.