Description: Also present in the District are a large variety of higher temperature sulfates, although the source for the Sulphur is not well understood. It is possible that the sulfate came from gypsum/anhydrite, but alteration of these minerals to liberate SO4 has not been studied.These minerals include kainite, kieserite, aphthitalite, leonite and langbeinite. In the photo, langbeinite is cream to pale pink, kainite is pale yellow, leonite is white, sylvite is white with red rims and halite is reddish-orange.

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