|These carbonaceous chondrites a have black, rough fusion crust with a dull luster. The surface is pitted and bubbles are present on some of the exterior. The interior is a dull black color with some gray, splotchy inclusions and minor rust. Most of the inclusions are <1 mm in size.
|The sections are so similar that a single description will suffice; the meteorites are probably paired. The sections show a few small chondrules (up to 0.6 mm) and numerous mineral grains in a black matrix; trace amounts of nickel-iron and sulfide are present as small scattered grains. Microprobe analyses show most of the olivine grains near Mg2SiO4 but with a few iron-rich grains; pyroxene compositions are Fs1-4. The matrix consists mainly of iron-rich serpentine. The meteorites are C2 chondrites.
|Many carbonaceous chondrites were initially classified as C2 in early newsletters. These are mostly CM2, based on matrix properties, chondrules abundance and sizes, and therefore all these samples have been reclassified more specifically here as CM2.