Minerals / Sphalerite, Driggeth.

Sphalerite, (Zn,Fe)S,   Zinc sulphide, is the main ore of zinc, and is usually associated with galena. The specimens here were collected from Driggeth mine, Caldbeck, Cumbria. The small, brilliant black crystals of sphalerite are embedded in cavities in the limestone rock. The local geology suggests that the rocks here are Ordovician in age.

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