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Rare earth and other trace element mobility accompanying albitization in a Proterozoic granite, W. Bergslagen, Sweden

Published online by Cambridge University Press:  05 July 2018

J. H. Baker
J. H. Baker*
Affiliation:
Geologisch Instituut, University of Amsterdam, Nwe. Prinsengracht 130, 1018 VZ Amsterdam, The Netherlands
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Abstract

Zones of albitization 20 m wide are developed in the peraluminous, undeformed Proterozoic Bastfallshöjden granite, W. Bergslagen, central Sweden. During albitization Na, Si, Mg, Ni, Zn, and Ga are added, while Fe2+, Fe3+, Mn, K, Sc, Rb, Cs, Ba, Pb, U, and F are lost, together with the rare earth elements (REE) in decreasing amounts with increasing atomic number. Ti, Al, P, and Y were immobile. Trace element data for chlorites separated from hydrothermally altered country rocks and from a quartz-chlorite vein in the albitized granite show similar REE patterns indicating a common origin: the most altered granite has a similar REE pattern, probably resulting from interaction with the same hydrothermal fluid which produced the chlorites, in which seawater is thought to have been an important constituent.

Keywords

rare earth elementstrace elementsalbitizationProterozoicgraniteBergslagenSweden
Type
Research Article
Information
Mineralogical Magazine , Volume 49 , Issue 350 , March 1985 , pp. 107 - 115
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1985 

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