@65dBnoise it's a coarse categorization method but "simple to apply" (reminds of Tau's principal component analysis processing at UNMSF), more helpful with boulder field views. Nice with an in-situ additional datapoint to confirm those letter-labeled flows identified from orbit.

I suspect Mount Washburn and other such boulder-rich areas in Neretva will show more diversity. The #JezeroBrightRocks will require more sophisticated methods to identify their provenance.