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 Similar articles in Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Web of Science (12) Citing Articles via Google Scholar Google Scholar Articles by Slaby, E. Articles by Götze, J. Search for Related Content GeoRef GeoRef Citation

Feldspar crystallization under magma-mixing conditions shown by cathodoluminescence and geochemical modelling – a case study from the Karkonosze pluton (SW Poland)

¹ Institute of Geochemistry, Mineralogy and Petrology, Warsaw University, Al. wirki i Wigury 93, 02-089 Warsaw, Poland
² Institute of Mineralogy, TU Bergakademie Freiberg, Brennhausgasse 14, D-09596 Freiberg, Germany

^* E-mail: E.Slaby{at}uw.edu.pl

Feldspars from the Karkonosze pluton (SW Poland) display many features compatible with magma mixing. The mixing hypothesis has been tested using a geochemical mass balance law resulting in two possible paths of magma hybridization. Based on the results of the geochemical calculation, feldspar samples have been chosen along both mixing lines for cathodoluminescence (CL) investigation which was used as the main tool for the reconstruction of their crystallization path. Changes in the conditions of nucleation and crystallization of the feldspars as well as their movement within the magma chamber have been recognized due to different luminescence characteristics. These changes in the conditions of crystallization obtained by CL allow a precise determination of the genetic affinity of the samples to more mafic or more felsic environments.

The results of the present study proved CL to be a valuable tool for the study of crystal-growth morphologies in a dynamic, turbulent environment and also as a geochemical tool for the reconstruction of various petrogenetic mechanisms (e.g. magma hybridization). Accordingly, the combination of CL with geochemical modelling provides corresponding information about magma evolution in an open system.

KEYWORDS: cathodoluminescence, Karkonosze pluton, Poland, feldspar, magma mixing

This article has been cited by other articles:

				A. Pieczka, B. Golebiowska, and J. Parafiniuk CONDITIONS OF FORMATION OF POLYMETALLIC MINERALIZATION IN THE EASTERN ENVELOPE OF THE KARKONOSZE GRANITE: THE CASE OF REDZINY, SOUTHWESTERN POLAND Can Mineral, August 1, 2009; 47(4): 765 - 786. [Abstract] [Full Text] [PDF]

				D. Gagnevin, J. S. Daly, and G. Poli Insights into granite petrogenesis from quantitative assessment of the field distribution of enclaves, xenoliths and K-feldspar megacrysts in the Monte Capanne pluton, Italy Mineralogical Magazine, December 23, 2008; 72(4): 925 - 940. [Abstract] [Full Text] [PDF]

				A. Muller, R. Seltmann, B. Kober, O. Eklund, T. Jeffries, and A. Kronz COMPOSITIONAL ZONING OF RAPAKIVI FELDSPARS AND COEXISTING QUARTZ PHENOCRYSTS Can Mineral, December 1, 2008; 46(6): 1417 - 1442. [Abstract] [Full Text] [PDF]

				E. Slaby, R. Seltmann, B. Kober, A. Muller, L. Galbarczyk-Gasiorowska, and T. Jeffries LREE distribution patterns in zoned alkali feldspar megacrysts from the Karkonosze pluton, Bohemian Massif implications for parental magma composition Mineralogical Magazine, April 1, 2007; 71(2): 155 - 178. [Abstract] [Full Text] [PDF]