Abstract
SEVERAL workers have reported the occurrence of newberyite, MgHPO4.3H2O, in the human urinary calculi, and we found it in 17 per cent of the stones studied in this laboratory1. Newberyite, however, is not mentioned by other workers who have also made extensive studies of the composition of calculi1. The stones in which we found newberyite were, apart from those in an allegedly modern Indonesian collection, all old, the Norwich ones dating from the eighteenth and nineteenth centuries. Data recently received on the Indonesian collection show that the stones were obtained from patients about twenty years ago and are therefore old enough for certain constituents to have undergone chemical change.
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References
Lonsdale, K., and Sutor, D. J., Science, 154, 1353 (1966).
Whitaker, A., Min. Mag. (in the press).
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SUTOR, D. Newberyite—its Formation in Human Urinary Calculi. Nature 218, 295 (1968). https://doi.org/10.1038/218295a0
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DOI: https://doi.org/10.1038/218295a0
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