Cenozoic, Europe, framework silicates, genesis, glasses, hydrothermal alteration, igneous rocks, Italy, lava, Lazio, leucite, lithostratigraphy, metasomatism, petrography, petrology, pyroclastics, Sabazia, silicates, Southern Europe, tuff, Tufo rosso a pomici nere Formation, volcanic, volcanic rocks, X-ray diffraction analysis, zeolitization
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