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Specimen: Chalcopyrite

Type: Mineral/Crystal

Location: Norway

Size (picture scale cube=1cm): 47 x 35 x 18mm (1.85 x 1.38 x 0.71 inches)

Chalcopyrite is a copper iron sulfide mineral that crystallizes in the tetragonal system. It has a brassy to golden yellow colour and a hardness of 3.5 to 4 on the Mohs scale. Its streak is diagnostic as green tinged black. On exposure to air, chalcopyrite oxidises to a variety of oxides, hydroxides and sulfates.

**Warning: Contains copper which can cause serious health issues if not handled correctly. DO NOT hammer or break this rock up without wearing a mask!**

**The mineral is a carefully chosen piece, with a photo that shows the actual specimen you will receive.**