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B836 - Volkovskite $ 500 (=~ £ 400) Boulby Mine, Loftus, N. Yorkshire, England small cabinet - 6.4 x 4 x 3 cm Intergrown crystal groups of rare Volkovskite. This recent find of Volkovskite set the world standard for the species. They were found as a biproduct of mining for potash, and because the Volkovskite damages mine machinery, the area where it was found is now avoided and it is unclear if anymore will be recovered. ©2010-2018 Marin Mineral |