Fig. 1
From: Synchrotron tts-µXRD identification of secondary phases in ancient ceramics
a Photomicrograph of vivianite crystals with the characteristic colours (plane-polarised light); b SEM-BSE image of vivianite crystallized within a vugh; c tts-μXRD pattern (red dots), corresponding to the sum of eight frames (from two measured micro-volumes, four frames each one, 5 s/frame, omega scan of 37.5º) acquired by areal analysis of a vivianite crystal: the blue pattern corresponds to that of vivianite powder diffraction file PDF 00-030-0662