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Sampling Potash Minerals.jpg - Georgialh
Blue halite (Prairie Evaporite Formation, Middle Devonian; Potash Saskatchewan-Lanigan Mine, Saskatchewan, Canada) (32237025735).jpg - Ser Amantio di Nicolao
Williston Basin stratigraphic column.jpg - Pi3.124
Blue halite (Prairie Evaporite Formation, Middle Devonian; Potash Saskatchewan-Lanigan Mine, Saskatchewan, Canada) 3.jpg - Ser Amantio di Nicolao
Blue halite (Prairie Evaporite Formation, Middle Devonian; Potash Saskatchewan-Lanigan Mine, Saskatchewan, Canada) 2.jpg - Ser Amantio di Nicolao
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