Marble analysis, 66.1.A
Portrait of a bearded man (the so-called Septimius Severus)
White marble
Marble origin: Pentelikon (Greece)
Mineralogy: calcite
Texture: heteroblastic
Maximum grain size (MGS): 0.51 mm
δ18OV-PDB: -6.23 ‰
δ13CV-PDB: 2.40 ‰
Cathodoluminescence color: yellow to light brown and brown
Cathodoluminescence intensity: weak to strong depending of the place
Cathodoluminescence distribution: heterogeneous
All data are in accordance with Pentelikon as the marble origin.
D. Decrouez & K. Ramseyer (1998, 2016)
66.1.A; Portrait of a bearded man (the so-called Septimius Severus) 
Microfacies under transmitted light. Long side of photograph: 3.3 mm 
Microfacies under polarized light. Long side of photograph: 3.3 mm 
Cathodomicrofacies, exposure time 15 sec. Long side of photograph: 3.3 mm 