This superb specimen features numerous tetrahedral crystals of Tetrahedrite with mirror-like luster. They are extremely sharp edged, well formed and superbly terminated. In association there is elongated and sharp Quartz and less Chalcopyrite. A super specimen with only minor edge wear from the heyday of this great mine, very probably from the 1970s due to the very high luster. This specific luster was the reason for the bad images here. The specimen is way better in kind.