Purple Staining of Archaeological Human Bone: An Investigation of Probable Cause and Implications for Other Tissues and Artifacts

Figure 6

XRD results for normal (a) and purple stained (b) samples. The graphs both have detector count as the vertical scale and detector 2Θ angle (from 5° to 60° 2Θ in steps of 0.05°) as the horizontal scale. Hydroxyapatite is the best match in both cases.

(a)

(b)