This specimen was collected in very recently (within the last few months - 2009). It hails from one of the most exciting Bolivian locality of the last 10 years. This single crystal is an attractive, very sharp, tabular, metallic, silvery-grey color, rather lustrous specimen with great form and sharp faces. One of the best pieces from this find was featured on the cover of the March/April 2009 Issue of the Mineralogical Record. This specimen is from the same mine and possibly the same exact pocket as the cover specimen.