Ferberite (twin)

Item Description

Here is a good twinned crystal of Ferberite. This species was sometimes previously referred to as "Wolframite", which was supposed to be an intermediary species between Ferberite and Hubnerite, but has since been discredited. This piece features the classic, "butterfly" twinning of Ferberite along the a (100) face. This piece is a rather lustrous, sharp, aesthetic jet-black twinned crystal that is displayable from several angles. There is a bit of metallic golden Marcasite on the piece a well. Please note that the piece is not 100% perfect, but it's so sharp and lustrous, it's still a very worthwhile example of these classic twins from Tasna. Twinned crystals from Bolivia have becoming increasingly difficult for me to obtain from Bolivia. These are definitely the most highly sought after crystal habit from this locality as well. This piece one of the most well-formed Ferberite twins that I have seen from Bolivia from a crystallographical standpoint, despite the damage.