99edcs.ess ((FERBERITE, MARCASITE, PYRITE)), $150 MINIMUM BID, Tasna Mine, Cerro Tazna, Potosi Department, Bolivia, 10 x 6 x 3.5 cm, Cabinet | |
Botryoidal mound of Marcasite with areas of small crystallized Pyrite on a large black Ferberite crystals to 3 cm |