For more detail go to the link and click on the image for a high definition image. You can then move the magnifying glass cursor then click to zoom in and click again to zoom out. When zoomed in you can scan by moving the side bars on the bottom and right side of the image.

Fascinating. Are these like Martian fossils?
copper?
My guess is it’s the migration of elements during the solidification process much like a eutectic forms in the iron/carbon alloy.
“Dubbed leopard spots because of their seemingly similarity to markings on famous Earth-bound predators,”
Proof the leopards beat us to Mars. They’re not as Earth bound as we thought.
Look for several democRATS to ask just how the leopards managed to travel to Mars. Also, did any of the leopards plant the American flag on Mars?
Some Windex will clean that right up. Next rover needs a scrub brush attachment.