Hello All, Triple junctions (grain boundaries meeting at [near] 120° angles) are a well-known phenomenon in acapulcoites, several SNCs, ureilites, winonaites, in Itqiy, and a few other meteorites. But they seem to be rather rare in diogenites. The only diogenites I was able to locate in my databases in which such triple junctions have been reported are the Antarctic diogenites GRA 98108 and MET 001060.
So I am very pleased to report the occurrence of a cluster/an aggregate of six (!) crystals (five [ortho]pyroxene + one plagioclase crystal) meeting in triple junction in my Bilanga thin section. This cluster of first-order colors is flanked by two dazzling, purple-blue-violet-red crystals (they almost steal the "triple junction show" ;-) which are probably olivines although they display cleavages that look suspiciously like cleavages seen in pyroxenes! So neat, so cute, so beautiful, so gorgeous, so exciting, ... getting emotional ;-) Good night, Bernd ______________________________________________ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
