Abstract
Additional measurements of 34S/32S, 13C/12C and 18O/16O ratios in metallic sulphides, carbonates and organic residues suggest a mode of genesis of the McArthur deposit generally consistent with geological and geochemical evidence. A very stable marine environment is indicated by the constant values for δ13C and δ18O observed throughout the entire deposit. However, 34S contents of pyrites varied by 25‰ in a manner consistent with the water depths and sulphate availability postulated for the McArthur environment.
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Smith, J.W., Croxford, N.J.W. An isotopic investigation of the environment of deposition of the McArthur mineralization. Mineral. Deposita 10, 269–276 (1975). https://doi.org/10.1007/BF00207885
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DOI: https://doi.org/10.1007/BF00207885