A great specimen of gunmetal blue Chalcocite crystals from the Levant Mine, Trewellard, Cornwall. Sharply formed crystals of Chalcocite measuring to 1cm are clustered over the display face of the specimen showing lots of twinning, and with green Brochantite, on a matrix of Quartz with red-brown Goethite and spots of brown Cassiterite. A well crystallized Chalcocite from Levant Mine.