- Paravauxite, Sigloite
- Cabinet, 10.8 x 9.7 x 3.7 cm
- Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosi Department, Bolivia
This piece features superb, incredibly rare, sharp, sparkling, lustrous, light green crystals of Paravauxite with tan colored crystal of Sigloite on iron-stained Wavellite on matrix. The largest crystal measures 1.0 cm. Sigloite forms as the result of alteration from Paravauxite.