Quick Search:    advanced search

GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help

This Article Figures Only Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Web of Science (5) Citing Articles via Google Scholar Google Scholar Articles by GOTTESMANN, B. Articles by FÖRSTER, H.-J. Search for Related Content GeoRef GeoRef Citation

Sekaninaite from the Satzung granite (Erzgebirge, Germany)

¹ GeoForschungsZentrum Potsdam, Telegrafenberg, D-14473 Potsdam, Germany
² University of Potsdam, Institute of Earth Sciences, P.O. Box 601553, D-14415 Potsdam, Germany

Corresponding author, e-mail: for{at}geo.uni-potsdam.de

In the earliest emplaced granite subintrusion of the multiphase peraluminous Satzung pluton, Erzgebirge, Germany, a mineral aggregate was observed consisting of sekaninaite (X_Fe = 0.74–0.94), Zn-rich hercynite (X_Zn = 0.03–0.11), tri- and dioctahedral layer silicates of different composition and color, and minor quartz. Geological, textural, and compositional criteria argue that the sekaninaite, hercynite, quartz, and the brown biotite are not primary or secondary granite minerals, but are of metamorphic origin representing a xenolith uptaken from the granite melt near its level of emplacement. The metamorphic origin is supported by the occurrence of this mineral assemblage in metamorphic rocks exposed locally in the Erzgebirge basement. Reaction of the polymineralic metamorphic aggregate with the surrounding melt and subsequent interaction with alkali-, F- and LILE-rich residual fluids account for the widespread decomposition of the sekaninaite and formation of several layer silicates including green biotite, muscovite, berthierine/Fe chlorite, and sericite. The observed enrichment of the relic sekaninaite and its replacement products in elements such as Na, Li, Be, Rb, Cs, and F is result of interaction of the metamorphic fragment with the surrounding melt/fluid, in accordance with the evolved nature of the Satzung magmatic-hydrothermal system.

Key-words: cordierite-sekaninaite, hercynite, green mica, berthierine, SIMS, S-type granite.

This article has been cited by other articles:

				S. Erdmann, R. A. Jamieson, and M. A. MacDonald Evaluating the Origin of Garnet, Cordierite, and Biotite in Granitic Rocks: a Case Study from the South Mountain Batholith, Nova Scotia J. Petrology, August 1, 2009; 50(8): 1477 - 1503. [Abstract] [Full Text] [PDF]

				M. A. Wise CRYSTALLIZATION OF 'POCKET' BERTHIERINE FROM THE PULSIFER GRANITIC PEGMATITE, POLAND, MAINE, USA Clays and Clay Minerals, December 1, 2007; 55(6): 583 - 592. [Abstract] [Full Text] [PDF]

				S. Erdmann, D. London, G. B. Morgan VI, and D. B. Clarke THE CONTAMINATION OF GRANITIC MAGMA BY METASEDIMENTARY COUNTRY-ROCK MATERIAL: AN EXPERIMENTAL STUDY Can Mineral, February 1, 2007; 45(1): 43 - 61. [Abstract] [Full Text] [PDF]

				D. B. CLARKE, M. DORAIS, B. BARBARIN, D. BARKER, B. CESARE, G. CLARKE, M. EL BAGHDADI, S. ERDMANN, H.-J. FORSTER, M. GAETA, et al. Occurrence and Origin of Andalusite in Peraluminous Felsic Igneous Rocks J. Petrology, March 1, 2005; 46(3): 441 - 472. [Abstract] [Full Text] [PDF]