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Heritage Science
Fig. 6 | Heritage Science

Fig. 6

From: Novel characterization techniques for cultural heritage using a TEM orientation imaging in combination with 3D precession diffraction tomography: a case study of green and white ancient Roman glass tesserae

Fig. 6

a View of the green tesserae area where orientation image is performed. b ASTAR phase mapping where amorphous (grey) areas can be readily distinguished from crystalline areas (yellow) and c ASTAR orientation map where different colours correspond to various orientations of the opacifier crystals; orientation colours correspond to colours in the stereographic triangle of the cubic structure. Arrows show various orientations (as colours) and typical ED patterns emerging from various areas of the opacifier crystallites during ASTAR scanning

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