Hello list, On the occasion of an ebay auction, namely NWA 2704 "SMB H4", I was asked by a collector, what the difference could be between an impact melt breccia IMB and a "shock melt breccia - SMB". Honestly I don't know the difference, as I never heard this term "SMB" before and was thinking, that all shock and melting processes in ordinary chondrites were caused by impacts. >From the picture of the auction I can't tell much, as the cut surface of the specimen is small and it's looking to me not diffrent from an IMB. Is SMB now a term of the official nomenclature and what shall I respond to the collector?
Many thanks, Martin ______________________________________________ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
