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Evidence for boron incorporation into the serpentine crystal structure

Serpentinite mud volcanoes from the Mariana forearc comprise B-rich mantle wedge peridotites serpentinized by slab fluids. The major component of these rocks are serpentine group minerals [Mg 3 Si 2 O 5 (OH) 4 ], showing highly variable textural and geochemical features. Micro-Raman spectroscopy rev...

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Bibliographic Details
Main Authors: Pabst, Sonja (Author) , Zack, Thomas (Author) , Savov, Ivan P. (Author) , Ludwig, Thomas (Author) , Rost, Detlef (Author) , Vicenzi, Edward P. (Author)
Format: Article (Journal)
Language:English
Published: 2011
In: American mineralogist
Year: 2011, Volume: 96, Issue: 7, Pages: 1112-1119
ISSN:1945-3027
DOI:10.2138/am.2011.3709
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.2138/am.2011.3709
Verlag, lizenzpflichtig, Volltext: https://www.degruyterbrill.com/document/doi/10.2138/am.2011.3709/html
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Author Notes:Sonja Pabst, Thomas Zack, Ivan P. Savov, Thomas Ludwig, Detlef Rost, Edward P. Vicenzi
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Summary:Serpentinite mud volcanoes from the Mariana forearc comprise B-rich mantle wedge peridotites serpentinized by slab fluids. The major component of these rocks are serpentine group minerals [Mg 3 Si 2 O 5 (OH) 4 ], showing highly variable textural and geochemical features. Micro-Raman spectroscopy reveals that the serpentine minerals are well-crystallized lizardite and chrysotile. In situ SIMS spot analyses and element mapping via ToF-SIMS show that B is evenly distributed across serpentine grains, suggesting that serpentine, both lizardite and chrysotile in different textural regions, can host significant amounts of B (up to -200 μg/g) into its crystal structure. As such structurally bound B can only be released during recrystallization or serpentine breakdown, our results have implications for modeling of the efficiency of cross-arc fluid mobile element recycling in subduction zones and stress the importance of the hydrated forearc mantle as a reservoir for fluid mobile elements.
Item Description: Veröffentlicht: 2. April 2015
Gesehen am 06.09.2022
Physical Description:Online Resource
ISSN:1945-3027
DOI:10.2138/am.2011.3709

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