Derivation of potassic (shoshonitic) magmas by decompression melting of phlogopite+pargasite lherzolite
A model metasomatized lherzolite composition contains phlogopite and pargasite, together with olivine, orthopyroxene, clinopyroxene and spinel or garnet as subsolidus phases to 3 GPa. Previous works established that at ≥1.5 GPa, phlogopite is stable abo
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