Fig. 26From: Recent progress in instrumental techniques for architectural heritage materialsK2O-Na2O-CaO ternary diagram of measured samples. MODEL/MU-blue/MU-green, LE/TOL/CAR, BUR, GOY/GOY-green/MAD/CRYS represented glasses samples of Medieval, Medieval-Renaissance Transition, Early Modern, Modern period, respectively [14], copyright (2010) ElsevierBack to article page