Dundasite is rare enough but this beautiful blue dundasite apparently occurred only once and many of the specimens were in all likelihood sold off as plancheite and thus misidentified. This one was "rediscovered" by Marcus Origlieri in an old collection (and confirmed by his analysis at University of Arizona). The occurrence of cuprian-blue dundasite is mentioned in the Gebhard book TSUMEB II, and the species is designated as "R," i.e. "rare with few occurrences of just a few known specimens." In this case, not only do we have rich covering of attractive crystals in the form of spherical aggregates, but we also have associated azurite and another unidentified green mineral in sub-mm crystals. 4 x 3.5 x 3.5 cm