- Tazna Mine (Tasna Mine; Tazna-Rosario Mine), Cerro Tazna, Atocha-Quechisla District, Nor Chichas Province, Potosi Department, Bolivia
- Small Cabinet, 9.0 x 5.7 x 5.3 cm
This is a very attractive, display specimen of Ferberite from Bolivia. The piece features several sharp, large, somewhat lustrous, aesthetic, jet-black, tabular crystals of Ferberite forming a very impressive crystal group. The largest crystal measures 5.3 cm long.