Abstract
Measurements of the 34S/32S ratios in sulphides from the slightly metamorphosed Lady Loretta deposit show the sphalerite and galena to be in isotopic equilibrium. Pyrite in immediate association with these sulphides is not isotopically related. A similar distribution of sulphur isotopes had previously been noted in the even less altered McArthur deposit, for which a dual sulphur source was postulated. This fresh isotopic evidence from Lady Loretta now suggests that such a genesis for stratiform sulphides from the Proterozoic is not uncommon.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Alcock, P. J., Lee, M. F.: Aspects of the geology and exploration of the Lady Loretta lead-zinc-silver deposit, north west Queensland. In: Recent Technical and Social Advances in the North Australian Minerals Industry, pp. 207–215, Melbourne: Australas. Inst. Min. Metall. 1974
Anger, G., Nielson, N., Puchelt, H., Ricke, W.: Sulphur isotopes in the Rammelsberg ore deposit (Germany). Econ. Geol. 61, 511–536 (1966)
Bailey, S. A., Smith, J. W.: Improved method for the preparation of sulfur dioxide from barium sulfate for isotope ratio studies. Anal. Chem. 44, 1542–43 (1972)
Croxford, N. J. W., Jephcott, S.: The McArthur lead-zinc-silver deposit, N.T. Proc. Australas. Inst. Min. Metall. No. 243, 1–26 (1972)
Croxford, N. J. W., Gulson, B. L., Smith, J. W.: The McArthur deposit. A review of the current situation. Mineral. Deposita 10, 302–304 (1975)
Gulson, B. L.: Differences in lead isotope composition in the stratiform McArthur zinc-lead-silver deposit. Mineral. Deposita 10, 277–286 (1975)
Loudon, A. G., Lee, M. K., Dowling, J. F., Bourne, R.: Lady Loretta Silver-Lead-Zinc Deposit. In: Economic Geology of Australia and Papua New Guinea, C. L. Knight, Ed., Metals Vol. 1, pp. 377–382. Melbourne: Australas. Inst. Min. Metall. 1975
Plumb, K. A., Derrick, G. M.: Geology of the Proterozoic Rocks of the Kimberley to Mount Isa Region. In: Economic Geology of Australia and Papua New Guinea, C. L. Knight, Ed., Metals Vol. 1, pp. 217–252. Melbourne: Australas. Inst. Min. Metall. 1975
Plumb, K. A., Sweet, I. P.: Regional significance of recent correlations across the Murphy tectonic ridge, Westmoreland area. In: Recent Technical and Social Advances in the North Australian Minerals Industry, pp. 199–206. Melbourne: Australas. Inst. Min. Metall. 1974
Smith, J. W., Croxford, N. J. W.: Sulphur isotope ratios in the McArthur lead-zinc-silver deposit. Nature (Lond.) Phys. Sci. 245, 10–12 (1973)
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)
Solomon, P. J.: Investigations into sulfide mineralization at Mount Isa, Queensland. Econ. Geol. 60, 737–765 (1965)
Williams, N., Rye, D. M.: Alternative interpretation of the sulphur isotope ratios in the McArthur lead-zinc-silver deposit. Nature (Lond.) Phys. Sci. 247, 535–537 (1974)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Carr, G.R., Smith, J.W. A comparative isotopic study of the Lady Loretta zinc-lead-silver deposit. Mineral. Deposita 12, 105–110 (1977). https://doi.org/10.1007/BF00204509
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00204509