There must be another factor that leads to blue Halite in the potash beds. If it were just the radiation from the
Rare 'Blue' Halite -From: Intrepid Potash Mine¸ Eddy County
Halite from Carlsbad Potash District, New Mexico, USA
History of the West Mine and Intrepid Potash at Carlsbad, New
Intrepid Potash North Mine The Center for Land Use Interpretation
Aphthitalite from Carlsbad Potash District, New Mexico, USA
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Photographs of mineral No. 61533: Halite from Intrepid Potash Mine
Halite from PCA Mine (Potash Company of America mine; Lundberg
Reserve Estimates for Five Potash Operations—Carlsbad New Mexico
Intrepid Denver CO
Intrepid Potash Plant - Fertilizer Bulk Storage - United States
Halite from Carlsbad Potash District, New Mexico, USA
Document
Mineralatlas Lexikon
Halite Mineral Specimens