Abstract
Fractionation of sulfur isotopes and selenium was measured between coexisting pyrite and chalcopyrite and between coexisting pyrrhotite and chalcopyrite from the Besshi deposit of Kieslager-type, Central Shikoku, Japan. In all the pyrite-chalcopyrite pairs studied, 34S is enriched in pyrite relative to chalcopyrite, while selenium is enriched conversely in chalcopyrite relative to pyrite. The mean △34Spy-cp value is +0.53±0.36 per mil, and the mean value of the distribution coefficient of selenium, Dcp-py, is 2.58±0.64. In all the pyrrhotite-chalcopyrite pairs studied, the two minerals are very close to each other both in sulfur isotope and Se/S ratios. The mean △34Spo-cp value is −0.08±0.16 per mil and the mean Dcp-po value is 0.99±0.05. The results have been discussed in comparison with similar data obtained for the Hitachi deposits of Kieslager-type, Japan (Yamamoto et al. 1983).
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Yamamoto, M., Kase, K. & Tsutsumi, M. Fractionation of sulfur isotopes and selenium between coexisting sulfide minerals from the Besshi deposit, Central Shikoku, Japan. Mineral. Deposita 19, 237–242 (1984). https://doi.org/10.1007/BF00199790
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DOI: https://doi.org/10.1007/BF00199790