Compaction?
It looks like a lichen but that can't be... right?
Iv'e noticed that Martian "soils" seem to compact easily
On earth, I think the "bonding agent" is usually water. Not sure what is holding Martian "sand castles" together but could the "flake" have been congealed dust that fell off the RAT?
It would be very interesting to find another "flake" Buck.
