Hello All, I'm really glad that Jeff G. responded because I didn't know whether or not I should mention his thoughts of about 10 years ago (!) when I asked him about hyphens and dashes and the confusion they cause! I was inquiring about DaG 140, then classified as an H3.9-6.
Mon, 07 Sep 1998, Jeff wrote (excerpt): 1) The hyphen implies a continuous range, and also implies that there is no dominant lithology in the breccia. Yet, DaG 140 could be: a) a type 3 chondrite with a single equilibrated clast found; b) a type 6 chondrite with a single type 3 clast found; c) a mixture of types 3, 4, 5, and 6 material; d) a light-dark breccia with mostly comminuted matrix and only a few clasts, including type 3 and 6 ones. So, right now we have a literature polluted with this and other nomenclatures (like using a "/" instead of a "-" for the same thing), ... Slashes (e.g., L5/6) indicate transitional classes, hyphens (e.g., H5-6) indicate breccias, ... Best wishes, Bernd ______________________________________________ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
