NWA 5028 was discovered in the Sahara Desert
during 2007 as a single unpaired stone weighing 2.445kg which
was classified as a very rare carbonaceous chondrite, CR2. NWA
5028 is the second largest single CR2 ever found after the
namesake, Renazzo which fell in Italy in 1824.
NWA 5028 is filled with multi-coloured
chondrules which range in size considerably. It appears that
there is also some orientation of the chondrules which is
sometimes seen in primitive chondrites. Some chondrules are
rimmed with metal and some also contain metallic inclusions. The
stone has a weathering level of just W1 but it does show a
colour darkening and lower levels of visible metallic iron
around the edges which may indicate a weathering artefact. One
of the unusual things with NWA 5028 are the numerous
Calcium-Aluminium rich Inclusions (CAI's). These are found
readily throughout the meteorite and some of these range up to
several millimetres in size. This specimen is part of the Meteorites Australia Collection
NWA 5028 (CR2) - 4.4g Partslice. (Polished Side).
1500 x 831 (361KB)
NWA 5028 (CR2) - 4.4g Partslice. (Unpolished Side).
1500 x 843 (559KB)