NASA's Perseverance Mars Rover

Before and after comparison:

White/light-toned fragments certainly interesting; that stuff deserves multi-spectral imaging at the very least! I'd be delighted with PIXL/LIBS analysis too, unless the science team knows a lot more about the geology here than they've shared to date!

Similar to the whitish spots in the adjacent abrasion patch? Light-toned material seems to be a surface/coating on several large fragments, and doesn't seem to be uniform in thickness or extent. It also doesn't seem to be loose/powdery material, given that it coats the fragments and hasn't spilled away from the fragments. There was no hint of the whitish stuff from the tailings made at the abrasion patch. The dark brownish fragment appears to simply be the natural surface with (all?) the dust shaken off, but none of the whitish material seems to have been at the surface, based on the frames taken during drilling; it seems that stuff was exposed when fragments were exhumed/overturned.

Seriously, I hope the science team is going to give this stuff the full treatment. Whitish rocks have turned out to have diverse and surprising mineralogy on this mission !