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Chromian muscovites and epidotes from Outokumpu, Finland

Published online by Cambridge University Press:  05 July 2018

Peter J. Treloar
Peter J. Treloar*
Affiliation:
Department of Geology and Physical Sciences, Oxford Polytechnic, Oxford OX3 0BP
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Abstract

The Outokumpu region of Finland is notable for the large number of Cr-rich silicate and oxide phases associated with the massive sulphide deposits. In this paper analyses of Cr-rich phases in the epidote-clinozoisite and muscovite groups are presented. The muscovite-type phase shows a maximum 80% substitution of Cr for A1 on octahedral sites with a maximum 24.7 wt.% Cr2O3. Apparent complete solid solution between this extreme composition and the fuchsitic muscovites is indicated. The clinozoisite type phase has a maximum 15.4 wt.% Cr2O3, with a composition close to Ca2CrAl2Si3O12(OH). As with the micas, complete solid solution of Cr for Al in the clinozoisite structure is indicated.

Keywords

chromiummuscoviteepidoteclinozoisiteOutokumpuFinland
Type
Mineralogy
Information
Mineralogical Magazine , Volume 51 , Issue 362 , October 1987 , pp. 593 - 599
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1987

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Footnotes

1

Present address: Dept. of Geology, Imperial College, London SW7 2BP.

References

Burns, R.G. and Strens, R.G. J. (1967) Mineral Mag. 36, 204-26.Google Scholar
Burns, V.M. and Burns, R.G. (1975) Geochim. Cosmochim. Acta 39, 903-10.CrossRefGoogle Scholar
Chen, P.-Y. and Lee, C.-W. (1974) Acta Geol. Taiwanic. 17, 7-11.Google Scholar
Deer, W.A., Howie, R.A. and Zussman, J. (1962) Rock Forming Minerals 3. Longmans, London.Google Scholar
Dollase, W.A. (1971) Am. Mineral. 56, 447-64.Google Scholar
Eskola, P. (1933) Bull. Comm. Geol. Finl. 103, 26-44.Google Scholar
Fabries, J. and Latouehe, L. (1973) Bull Soc. Fr. Mineral. Cristallogr. 96, 148-9.Google Scholar
Faye, G.H. (1968) Can. J. Earth Sci. 5, 31-38.CrossRefGoogle Scholar
Grapes, R.H. (1981) Am. Mineral. 66, 974-5.Google Scholar
Koistinen, T.J. (1981) Trans. R. Soc. Edinburgh, Earth Sci. 72, 115-58.CrossRefGoogle Scholar
Kuovo, O. and Vuorelainen, Y. (1958) Am. Mineral. 43, 1098-16.Google Scholar
Schreyer, W., Werding, G. and Abraham, K. (1981) J. Petrol. 22, 191-231.CrossRefGoogle Scholar
Seward, T.M. (1971) Chem. Geol. 7, 73-95.CrossRefGoogle Scholar
Shepel, A.B. and Karpenko, M.V. (1970) Am. Mineral. 55, 321-2.Google Scholar
Peltola, E., Vuorelainen, Y. and Hakli, T.A. (1968) Bull. Geol. Soc. Finl. 40, 35-8.CrossRefGoogle Scholar
Treloar, P.J., Koistinen, T.J. and Bowes, D.R. (1981) Trans. R. Soc. Edinburgh, Earth Sci. 72, 201-15.CrossRefGoogle Scholar
Vuorelainen, Y., Hakli, T.A. and Kataja, M.A. (1968) Bull. Geol. Soc. Finl. 40, 125-9.CrossRefGoogle Scholar
Ward, C.M. (1984) Am. Mineral. 69, 541-5.Google Scholar
Weiser, T. (1967) NeuesJahrb. Mineral. Mh. 234-43.Google Scholar
Whitmore, D.R. E., Berry, L.G. and Hawley, J.E. (1946) Am. Mineral. 31, 1-21.Google Scholar