Phyllosilicates produced mostly by weathering of magmatic, metamorphic and sedimentary rocks are widespread in the surficial and near-surface zones of the Earth’s crust. These phyllosilicates display very fine grain sizes, disordered crystal structures, and greatly varying chemical compositions, and they represent structurally and chemically metasable phases. They are subjected to heat during diagenesis and concomitant metamorphism, which provides a long-life source of energy for transforming the metastable phases into thermodynamically more stable phases through a long series of partly continuous, partly discontinuous reactions. The present review summarizes some major mineralogical aspects of these processes, with special reference to petrogenetic applications....
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Research Article| January 01, 2002
Phyllosilicates in Very Low-Grade Metamorphism: Transformation to Micas
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Péter Árkai; Phyllosilicates in Very Low-Grade Metamorphism: Transformation to Micas. Reviews in Mineralogy and Geochemistry 2002;; 46 (1): 463–478. doi: https://doi.org/10.2138/rmg.2002.46.11
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