Pitchblende at Nesbitt LaBine Uranium Mines occurs in fractures cross-cutting a slatey formation. Certain parts of the fractures are heavily mineralized with calcite, hematite and pitchblende. Associated with the pitchblende is pyrite, chalcopyrite, bornite, chalcocite, covellite, sphalerite, galena and native tin. Samples from three separate veins on the first level and from one vein on the second level of the mine are unique in containing native tin.

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