Quoting from the "Composition of Mars" link. Hmm. Surface Type 2 covers a much larger area of Mars than Surface Type 1. That would give andesite as the most common rock, dominated by Plagiocalse (50-70% albite to 30-50% anorthite). We've seen anorthite in the "genesis rock" on the Moon. The TEM has also seen olivine in Nili Fossae and elsewhere. And grey hematite deposits were seen in abundance at two sites on the planet, the Terra Meridiani site, near the Martian equator at 0° longitude, and the second site Aram Chaos near the Valles Marineris. In order from largest mineral concentration down, we would have something like: Plagioclase (between albite and anorthite) Pyroxene (incl. Albite and Orthopyroxine) Amphibole Olivine Hematite Quartz > What ores Hematite for starters.