Potosiite (large crystals!)

Item Description

From the great find of 2004. This specimen is a very attractive, incredibly rare, superb quality, crystallized specimen Potosiite consisting of several, extremely rare, highly lustrous, heavily striated, tabular blades (some are twinned) measuring up to 5 mm! sitting atop a crystallied mound of the rare triclinic lead, tin, iron, antimony sulfosalt Franckeite. For those of you who are unaware, the crystals of Potosiite on this specimen are EXCEPTIONALLY LARGE. Before these new specimens were discovered, some of the largest known crystals of Potosiite were massive, uncrystallized, granules less than 1 mm. in most cases. The crystals on this specimen are NOT micros, you can clearly see them with the naked eye and they are very distinct. These are undoubtedly some of the LARGEST KNOWN POTOSIITE CRYSTALS IN EXISTENCE. Valued at $500-$600 retail.