Fluorite penetration twin (35 mm on edge) with galena (3 cm crystal) and calcite, 8 cm specimen, Boltsburn Mine, Co Durham. photo

Hajar | all galleries >> Northern England >> Northern Mineral Treasures > Fluorite penetration twin (35 mm on edge) with galena (3 cm crystal) and calcite, 8 cm specimen, Boltsburn Mine, Co Durham.


08-DEC-2013

Sony Alpha 77
1/40s f/14.0 at 50.0mm iso200 full exif

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