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Raman spectroscopy mappings of ClA, OA and ACP in chlorapatite coatings. Light blue oval: domain rich in ClA, poor in ACP and OA, tentatively associated with an unmelt core of a splat. White circle: domain rich in OA, poor in HA, within two ACP layers, attributed to the recrystallization of a molten domain or of solid ACP phase. The layered structure of the splats is clearly visible on ACP maps (the top surface is corrupted by the spectra of the embedding resin).
