Abstract
ALLOW me to add to the list of minerals showing this phenomenon one which I have already given in my book “Diversions of a Naturalist.” It is that of corundum. I found that water-worn pebbles of corundum (so identified in the department of minerals of the Natural History Museum) gave flashes of light when rubbed together, but required for this result a heavier pressure than do pebbles of silica. The same odour as that observed when silica is used was produced.
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LANKESTER, E. Luminosity by Attrition. Nature 106, 438 (1920). https://doi.org/10.1038/106438b0
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DOI: https://doi.org/10.1038/106438b0
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