Hi Geoff and List, Thanks for forwarding the news of the success of the Mike-Morton-Robert team in Norway. The small chondrule size mentioned by Mike would tend to rule out the vast majority of chondrite types: CV, LL, CR, CK, L, EL and K chondrites all have mean chondrule diameters greater than 500 microns. However, CO chondrules are tiny with average chondrule size in the 150-micron range (0.15 mm). (The only carbonaceous chondrite with smaller chondrules is CH -- and these are much, much smaller -- 20 microns.) Unless Mike is saying that the chondrules are quite a bit smaller than a half-millimeter, it would seem that CM is a better match (mean diameter ~300 microns). Marcin, Matteo and Marco (3Ms): your guesses are looking better! (P.S. Did your first names have any influence on your CM guess? ;-)
EH, H and rumurutiites also have mean chondrules sizes in the 200-400 micron range, but Mike has seen enough meteorites that he should be able to rule out these types. --Rob ______________________________________________ Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
