Abstract
IT was suggested by Prof. Baly that the blue colour of certain specimens of rock salt from Stassfurt might be explained by a difference in energy content between the blue and the ordinary colourless salt, and that this difference might be manifested by a difference in the heats of solution of the two varieties.
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GUTHRIE, F. Blue Rock Salt. Nature 123, 130 (1929). https://doi.org/10.1038/123130b0
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DOI: https://doi.org/10.1038/123130b0
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