Several fragments totaling ~2 kg were recovered in the Sahara Desert and subsequently purchased by an American dealer in early 2003. Northwest Africa 1955 was classified at Planetary Studies Foundation (P. Siperia) as the first H/L3–4 chondrite. Besides NWA 1955, only Tieschitz (H/L3.6), Bremervörde (H/L3.9), Haxtun (H/L4), Y-74645 (H/L4), and Yamato 8424 (H/L) have been assigned to this intermediate group. Initial studies indicate that Dhofar 008 may also belong to this group. The specimen of NWA 1955 shown above is an 8.4 g partial slice. The photo below is the 389 g main mass owned by T. Boudreaux.
Photo courtesy of Matt Morgan—Mile High Meteorites
