Ferberite

Item Description

Some of the best crystallized Ferberites in the world come from the famous Tazna Mine in Bolivia. This iron tungstate mineral is not often found in fine crystallized examples outside of a few world localities. In addition to individual crystals, the finest twinned Ferberite crystals in the world also come from the Tazna Mine. This toenail piece is a good quality example featuring classic, well-formed bladed crystals of Ferberite measuring up to 2.3 cm, free of matrix. The overall quality of the piece is good as the piece has defined, sharp faces, moderate luster and the classic jet-black color. I must stress that there are some areas of damage on the crystals, the piece is not perfect, so please keep this in mind when bidding. It should be noted that Ferberite was sometimes previously referred to as "Wolframite", which was supposed to be an intermediary species between Ferberite and Hubnerite, but has since been discredited.