Here's a more recent article, about the relation of Acap-Lod and models of the parent body: http://www.lpi.usra.edu/meetings/lpsc2007/pdf/2254.pdf
Best too Martin -----Ursprüngliche Nachricht----- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von [EMAIL PROTECTED] Gesendet: Freitag, 26. Oktober 2007 22:20 An: [email protected] Betreff: [meteorite-list] ALOD vs ACAP Greg inquired: "What is the average grain size for the ACAP grouping being discussed" HUTCHISON R. (2004) Meteorites: A Petrologic, Chemical, and Isotopic Synthesis (Cambridge Planetary Science Series, pp. 506)-Excerpt, p. 252: Table 8.2 Properties of primitive achondrite groups Grain size: Acapulcoites: 150-230µm (= 0.15-0.23 mm) Lodranites: 340-700µm (= 0.34-0.70 mm) Well, as for my NWA 2871 thin section, I find grains measuring 0.42, 0.52, 0.59 mm. That would be an average grain size of 0.51 mm for these three counts - well within the range for lodranites but bulk rock composition (see my previous post to the List) may speak a different language. I'm still waiting for John Kashuba and Roger Warin to chime in. Friday, May 18, 2007, Roger and myself exchanged emails re: Tafassasset and NWA 2871 and Roger wrote: «Voilà comme je définissais l'acapulcoite NWA 2871: ... » Well, let's leave it up to Roger what exactly he wrote but I am sure several list members would appreciate his assessment very much - Roger are you out there? Best wishes, Bernd To: [EMAIL PROTECTED] [email protected] ______________________________________________ Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list ______________________________________________ Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
