Mineral: Sphalerite
Locality: Smallcleugh Mine, Nenthead, Alston Moor District, North Pennines Orefield, former Cumberland, Cumbria, England / United Kingdom
Dimensions: 7.1 x 4.6 x 3.0 cm

Description: Lustrous black sphalerite crystals to 1.0 cm covering the top surface of a dark brown sphalerite rich matrix.

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