NWA 5426 is a Rumuruti type chondrite. Most R chondrites show brecciation, though Rumuruti itself does not. They have a somewhat high ratio of matrix to chondrules and very little metallic nickel-iron. Chondrules tend not to be the fully melted types (barred, radial, cryptocrystalline and glassy) but, as you’ll see below, there are exceptions. Here are close-ups of a slice of another R chondrite and then a short tour of NWA 5426 in thin section.
