- Toenail, 3.0 x 2.4 x 0.8 cm
- Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosi Department, Bolivia
A beautiful and showy crust covered with sparkly and gemmy, venetian-blue, botryoidal clusters of vauxite blades from the Type Locality - the famous Siglo XX Mine of Bolivia. Vauxite is a rare phosphate, found in only one locality worldwide. This specimen has excellent color, form and is very rich.