Figure 6

(a) RGB correlation of the μXRPD areal distribution maps of whewellite (WHE) and weddellite (WED) in an AmOx-treated sample; (b) RGB correlation of the μXRPD areal distribution maps of the marker peaks of identified HAP and by-products (ADP and OCP) in a DAP-treated sample; (c) RGB correlation of the μXRPD areal distribution maps the main CaOxs (whewellite and weddellite) and CaPs (hydroxyapatite) in a DAP + AmOx treated sample. All three figures are an ROI of 400 × 400 μm2 taken from the surface of the samples.