Hostname: page-component-76fb5796d-qxdb6 Total loading time: 0 Render date: 2024-04-29T05:22:26.159Z Has data issue: false hasContentIssue false
  • English
  • Français

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
Get access Rights & Permissions [Opens in a new window]

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

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

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