Abstract
THE occurrence of stilpnomelane in Great Britain was first recorded by Hallimond1. He described the mineral from the Pen-y-rallt mine in Merionethshire, where it occurs in a pisolitic ironstone bed at the contact with “a mass of igneous rock”. The mineral occurs in association with chalybite in roughly parallel asbestiform veins up to one inch wide.
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References
Hallimond, A. F., Min. Mag., 20, 193 (1924).
Cox, A. H., and Wells, A. K., Quart. J. Geol. Soc., Lond., 76, 296 (1920).
Bloxam, T. W., Amer. J. Sci., 257, 103 (1959).
Wager, L. R., and Deer, W. A., Medd. om Grönland, 105, No. 4 (1939).
Hutton, C. O., Min. Mag., 25, 172 (1938).
Fyfe, W. S., Turner, F. J., and Verhoogen, J., Geol. Soc. Amer. Mem., 73 (1958).
Woodland, A. W., Geol. Mag., 75, 366 (1938).
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BLOXAM, T., PRICE, N. Stilpnomelane in North Wales. Nature 190, 525–526 (1961). https://doi.org/10.1038/190525a0
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DOI: https://doi.org/10.1038/190525a0
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