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Title

Petrography and major-element geochemistry of the Gharebagh phlogopite deposit, north-western Iran

Year: 1399
COI: GSI39_219
Language: EnglishView: 165
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Authors

Paula Dörfler - Ludwig-Maximilians-Universität München, Lehrstuhl für Geologie, Luisenstr. ۳۷, ۸۰۳۳۳ München

Abstract:

The Gharebagh Phlogopite Deposit hosts phlogopite megacrysts up to ۳۰ cm in diameter. It is associated with syenite intruded by mafic dykes. Phlogopite-bearing glimmerite veins are oriented along the dykes. The glimmerite is accompanied by a metasomatic sequence consisting of largely monomineralic, pyroxene-rich transition rocks and metasomatic, dark syenite. Petrography revealed abundant reaction textures in syenite host rock and mafic rocks. Comparing mineral relationships across host rocks and metasomatic rocks with data from whole-rock geochemistry indicate that K۲O, MgO, CaO, and Na۲O were highly mobile. We suggest that the deposition of those elements was controlled by the phlogopite crystallisation. The phlogopite accumulated K۲O and MgO, whereas excess material was either incorporated in transition rocks (CaO) or transported further (Na۲O). The abundance of calcite in all rocks suggests that CO۲ played a major role in the metasomatic process.

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Paper COI Code

This Paper COI Code is GSI39_219. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/1202545/

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Dörfler, Paula,1399,Petrography and major-element geochemistry of the Gharebagh phlogopite deposit, north-western Iran,39th National Congress and 4th International Congress of Earth Sciences,https://civilica.com/doc/1202545

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