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Subsolidus fluid generation via coupled muscovite dehydroxylation and biotite dehydration: Experimental constraints for metasomatism in granites
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DOI：10.1016/j.lithos.2026.108703.png)
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Abstract
En 中文
• Muscovite dehydroxylation generates internal fluids in subsolidus felsic rocks. • Mica-derived fluids drive extensive mineral replacement without external fluid input. • Biotite is destabilized to orthopyroxene–spinel aggregates with complete K loss. • Feldspars undergo pervasive alkali metasomatism via coupled dissolution–precipitation. • Internally released fluids precondition felsic rocks for metasomatism and anatexis.
Keywords:
Muscovite dehydroxylation
Subsolidus fluids
Alkali metasomatism
Dissolution–precipitation
Continental crust
Biotite
Granite
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