Abstract
Reports of triboluminescent phenomena in organic crystalline materials1,2 prompted us to look for related processes in clay minerals. We found the reported extensive mechanical distortion produced on freezing and drying of montmorillonite3 particularly interesting because of our studies of condensation reactions in a wet/dry cycled reaction sequence4–7. We now report the discovery of an unusual luminescent process in several clay minerals and describe its characteristics.
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Coyne, L., Lahav, N. & Lawless, J. Dehydration-induced luminescence in clay minerals. Nature 292, 819–821 (1981). https://doi.org/10.1038/292819a0
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DOI: https://doi.org/10.1038/292819a0
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