HUTCHISON R. (2004) Meteorites: A Petrologic, Chemical, and Isotopic Synthesis (Cambridge Planetary Science Series, pp. 506). If anyone out there already owns this book, have a look at page 140. There NWA 801 is described as an R3-6. Maybe this should have been NWA 800, but NWA 800 is ... an R4 chondrite ... ?!? Any comments? Bernd