Metamorphic history of garnet-rich gneiss at Ktiš in the Lhenice shear zone, Moldanubian Zone of the southern Bohemian Massif, inferred from inclusions and compositional zoning of garnet

► Multiple equilibrium stages were identified from garnet-rich gneiss at KtiÅ¡ in the Lhenice shear zone of the southern Bohemian Massif, Czech Republic. ► A new criterion for the determined “Core” and “Rim” of garnet is proposed: using Phosphorus (P) distribution. ► Estimated P-T conditions suggest that studied rock recorded precursor HP conditions and then experienced the isothermal decompression, accompanying partial melting at the garnet rim-formation stage. ► The higher-phosphorus content of garnet can be used as an indicator of partial melting of the host rock.