Table 1. Summary of correlation statistics between PIXL elemental maps and survey scan SHERLOC 330- to 350-nm luminescence intensity maps.

Rock targets from Fig. 5 are presented in rows. Columns show statistical metrics of Pearson’s correlation coefficient, r, and related P value as well as the structural similarity index (SSIM). Correlation statistics results for 330- to 350-nm luminescence and P₂O₅ are compared with a summary of the results for all other elements.

Target	r (lum.-P2O5)	P value (lum.-P2O5)	r (lum.-element)	SSIM (lum.-P2O5)	SSIM (lum.-element)
Bellegarde	0.6	10−94	<0–0.2	0.5	<0–0.2
Alfalfa	0.4	10−44	<0–0.1	0.4	<0–0.1
Montpezat	0.7	10−58	<0–0.2	0.6	0–0.2
Dourbes Scan 1	0.8	10−105	<0–0.4	0.8	<0–0.5
Dourbes Scan 2	0.8	10−132	<0–0.6	0.7	<0–0.4
Quartier	0.6	10−94	<0–0.2	0.7	<0–0.4
All	0.7	<10−308	<0–0.3	N/A	N/A