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Metallic silver-grey prismatic crystals of Enargite from the Bor mine in the Bor-Majdanpek Mining District of Serbia. Crystals of Enargite measure over 1 cm in length and form clusters on a white Quartz matrix. The Enargite crystals are extremely bright, almost mirror-bright, but this doesn't show in the photographs. The reverse side also has a reasonably good coverage of Enargite crystals embedded in areas of creamy white Feldspar with a porcelaneous texture and lustre. A rare specimen from this Serbian mine and accompanied by a collection label from Simone and Peter Huber, recording its acquisition in Vienna in 1982.