Skip to main content Accessibility help

Fluid Inclusion Studies on the Ecton Hill Copper Deposits, North Staffordshire

  • R. Masheder (a1) and A. H. Rankin (a1)


Thermometric and D-ICP analysis of fluid inclusions in calcite and fluorite show that the fluids responsible for extensive carbonate-hosted copper mineralization in the Ecton Hill area were low-temperature (< 100 °C), high-salinity (19.5 to 23 wt. % NaCl equivalents) brines strongly enriched in calcium (mean Ca:Na wt. ratio = 1.9). Compared with the fluids responsible for classical ‘Mississippi Valley type’ lead-zinc deposits elsewhere in the south Pennine orefield, the Ecton ore-fluids were of lower temperature and slightly more enriched in potassium. Despite these subtle differences, the data are consistent with a basinal brine model for ore genesis in this western part of the orefield similar to that envisaged for the remainder of the orefield. These Ca-Na-K-Cl, copper-bearing brines were most probably derived from the Cheshire basin located to the west of the Derbyshire Dome.



Hide All
Aitkenhead, N., Chisholm, J.I., and Stevenson, I.P. (1985) Geology of the country around Buxton, Leek and Bakewell. Mere. Br. Geol. Surv. for Sheet 111. H.M.S.O., London, 168 pp.
Alderton, D.H.M., Thompson, M.J., Rankin, A.H., and Chryssoulis, S.L. (1982) Chem. Geol. 37, 203-13.
Allen, P.M. (1982) Copper Mineralization in Great Britain. In Spec. Pubf. UNESCO-IGCP Projects 169 and 63, no. 1 (Jankovic, S. and Sillitoe, R.H., eds.) SGADept. Economic Geology, Belgrade Joint Publ., 266- 76.
Astrop, R. (1987) B.Sc. Thesis, Mining Geology, Imperial College, University of London.
Atkinson, P., Moore, J. McM., and Evans, A.M. (1982) Bull. B.R.G.M. Sect. 11, no. 2, 149-56.
Borisenko, A.S. (1977) Soviet Geol. and Geophys. 18, 18-19.
Brown, G.C., Ixer, R.I., Plant, J.A., and Webb, P.C. (1987) Trans. Inst. Mining Metal., Sect. B, 96, 65-76.
Carpenter, A.B., Trout, M.L., and Pickett, E.E. (1974) Econ. Geol. 69, 119-120..
Critchley, M.F. (1979) Bull. Peak Distr. Mines Hist. Soc. 7, 177-91.
Davidson, C.F. (1966) Trans. Inst. Mining Metall, Sect. B, 84, 215-25.
Dunham, K.C. (1983) Ore Genesis in the English Pennines: a fluoritic subtype. In Proc. 2nd Internat. Conf. on Mississippi Valley type lead-zinc deposits (Kisvarsanyi, G. et al. eds.) Rolla, Missouri, Univ. Missouri Press, 86-112.
Ford, T.D. (1976) In Handbook of stratabound and stratiform ore deposits, 5 (K. H. Wolff, ed.) Elsevier, 161-95.
Ineson, P.R. and Ford, T.D. (1982) Mercian Geol. 8, 285-303.
Mostaghel, M.A. (1985) Ibid. 10, 27-38.
Mostaghel, M.A. and Ford, T.D. (1986) Ibid. 10, 209-24.
Ohle, E.L. (1980) Econ. Geol. 75, 161-72.
Potter, R.W.I. (1977) J. Res. U.S. Geol. Surv. 5, 60-37.
Clynne, M.A., and Brown, D.L. (1978) Econ. Geol. 73, 284-5.
Rankin, A.H. and Criddle, A. (1985) Trans. Inst. Mining MetaIl., Sect. B, 94, 126-32.
Robey, J. and Porter, L. (1972) The copper and lead mines of Ecton Hill. Staffordshire. Moorland Publishing Co., Harlington, England.
Robinson, B.W. and Ineson, P.R. (1979) Trans. Inst. Mining Metall., Sect. B, 88, B10717.
Roedder, E. (1984) Fluid Inclusions. Min. Soc. Am., Reviews in Mineralogy, 12, 644 pp.
Rogers, P.J. (1977) Trans. Inst. Mining MetaU., Sect. B, 86, 128-32.
Sangster, D.F. (1983) Mississippi Valley type deposits: a geological melange. In Proc. 2nd lnternat. Conf. on Mississippi Valley type leadzinc deposits (G. Kisvarsanyi et al., eds.) Rolla, Missouri, Univ. Missouri Press, 7-19.
Shepherd, T.J., Rankin, A.H., and Alderton, D.H.M. (1985) A Practical Guide to Fluid Inclusion Studies. Blackie and Sons, Glasgow, 239 pp.
Thompson, M.J. and Walsh, J.N. (1983) A Handbook of ICP Spectrometry. Blackie and Sons, Glasgow, 280 pp.
Truesdell, A.H. (1984) Chapter 3. In FluidMineral Equilibria in Hydrothermal Systems. Revs. in Econ. Geol. 1 (Henley, R.W. et al., eds.), Econ. Geol. Publishing Co., El Paso, Texas, 31-44.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Mineralogical Magazine
  • ISSN: 0026-461X
  • EISSN: 1471-8022
  • URL: /core/journals/mineralogical-magazine
Please enter your name
Please enter a valid email address
Who would you like to send this to? *



Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed