Abstract
The concentration profiles of the trace elements, S, Ti, V, Cr, Mn, Co, Ni, Cu, Zn, Sr, and Y have been determined across a metasomatic vein in peridotite. The introduced elements Ti, V, Sr, and Y show specific enrichment in particular silicate phases in accordance with the availability of suitable lattice sites. In contrast, the other introduced trace elements (Cu and S) behave more like the redistributed elements, Cr, Ni, Mn, and Co which do not show concentration ‘fronts’ that can be simply related to the silicate minerals. Concentration of pentlandite, chalcopyrite, and Cr-magnetite near the boundary between the enstatite and anthophyllite zones gives rise to maxima in the Ni, Cu, S, and Cr distributions, while in the chlorite zone significant concentrations of Cr and Ni occur in the chlorite itself. Control of the distribution of Ni, Cu, and Cr is ascribed to the oxidation/reduction reactions involved in the formation of pentlandite, chalcopyrite and Cr-magnetite, together with the critical role of Al in limiting chlorite formation during metasomatism.
Similar content being viewed by others
References
Beeson, M.H., Jackson, E.D.: Chemical composition of altered chromites from the Stillwater complex. Montana. Am. Mineral. 54, 1084–1100 (1969)
Bliss, N.W., MacLean, W.H.: The paragenesis of zoned chromite from Central Manitoba. Geochim. Cosmochim. Acta 39, 973–990 (1975)
Brady, J.B.: Metasomatic zones in metamorphic rocks. Geochim. Cosmochim. Acta 41, 113–125 (1977)
Brueckner, H.K.: Contact and fracture ultramafic assemblages from Norway: Rb-Sr evidence for crustal contamination. Contrib. Mineral. Petrol. 49, 39–48 (1975)
Carswell, D.A., Curtis, C.D., Kanaris-Sotiriou, R.: Vein metasomatism in peridotite at Kalskaret, near Tafjord, South Norway. Contrib. Mineral. Petrol. 19, 97–124 (1968)
Carswell, D.A., Curtis, G.D., Kanaris-Sotirou, R.: Vein metasomatism in peridotite at Kalskaret, near Tefjord, South Norway. J. Petrol. 15, 383–402 (1974)
Curtis, C.D., Brown, P.E.: Trace element behaviour in the zoned ultrabasic bodies of Unst, Shetland. Contrib. Mineral. Petrol. 31, 87–93 (1971)
Eckstrand, O.R.: The Dumont Serpentinite: a model for control of nickeliferous opaque mineral assemblages by alteration reactions in ultramafic rocks. Econ. Geol. 70, 183–201 (1975)
Groves, D.I. Hudson, D.R., Hack, J.B.C.: Modification of ironnickel sulphides during serpentinisation and talc-carbonate alteration at Black Swan, Western Australia. Econ. Geol. 69, 1265–1281 (1974)
Harris, D.C., Nickel, E.H.: Pentlandite compositions and associations in some mineral deposits. Can. Mineral. 11, 861–878 (1972)
Kullerud, G.: Thermal stability of pentlandite. Can. Mineral. 7, 353–366 (1963)
Palache, C., Berman, H., Frondel, C.: Dana's system of mineralogy, Vol. 1, 7th Ed. New York: John Wiley & Sons 1978
Rajamani, V.: Distribution of iron, cobalt and nickel between synthetic sulphide and orthopyroxene at 900 °C. Econ. Geol. 71, 795–802 (1976)
Ramdohr, P.: A widespread mineral association, connected with serpentinisation. N. Jb. Mineral. Abh. 107, 241–265 (1967)
Rucklidge, J.C.: A study of the redistribution of nickel in the serpentinisation of olivine. Proc. 6th Inter. Conf. X-ray Optics and Microanalysis, Tokyo (1972)
Spangenberg, K.: Die chromitlagenstätte von Tampadel in Zobten. Z. Prakt. Geol. 51, 13–35 (1943)
Trommsdorf, V. Evans, B.W.: Alpine metamorphism of peridotitic rocks. Schweiz. Mineral Petrol. Mitt. 54, 333–352 (1974)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kanaris-Sotiriou, R., Gibb, F.G.F., Carswell, D.A. et al. Trace-element distribution and ore formation in vein-metasomatised peridotite at Kalskaret, near Tafjord, South Norway. Contr. Mineral. and Petrol. 67, 289–295 (1978). https://doi.org/10.1007/BF00381456
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00381456