Ornans vs Orgueil

Ornans is a carbonaceous chondrite meteorite that fell near Ornans in the Doubs department of France in 1868. It is the type specimen for the CO, or Ornans-type, group of carbonaceous chondrites, whose members contain abundant small chondrules and primitive rocky material. Its classification makes it significant to researchers studying early Solar System solids, parent-body alteration, and relatio...

Orgueil is a CI1 carbonaceous chondrite meteorite that fell near Orgueil in southern France on 14 May 1864. CI chondrites are chemically primitive, fine-grained rocks rich in hydrated minerals and organic compounds, and their nonvolatile elemental abundances closely resemble those measured in the solar photosphere. Because the material has undergone extensive alteration by water on its parent body...