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Figure 2
(a) Overview scan (average diffraction signal). (b) Total fluorescence signal (1–18 keV, extending 1 keV above incident energy to include full elastic peak). (c) NMF segmentation (red: calcite rich; green: HAp rich; blue: chitin rich), [0–1] normalized for each RGB channel. (d) Relative fluorescence (K-edge; red: Br; green: Sr; blue: Ca). All scale bars are 1 mm.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 59| Part 5| October 2026|
https://doi.org/10.1107/S1600576726008277