Hi Fred, Mike, all, that phenomenon oft he red-brownish fusion crust is already described. Herb Raab (asteroid 3184) found that interesting article by Eduard Doell: "Two New Criteria for the Orientation of the Meteorites", in Jahrbuch der k. k. geol. Reichsanatalt, 37. Band, 2. Heft (1887), S. 193-206.
We translate freely his quote: "The [...] features used for orientation are: 1. seams of the rind, 2. shape of the surface, 3. depressions on the faces, 4. small meteorites assembled on the backside along with filaments of melt and drops. 5. flowlines 6. diversity of colour and luster of the rind." [...] "Vom Rath describes on the Pultusk-stones reddish-brown Rinds of an almost metallic luster, which show no lippings. 'Over that red Melt ran a second, black and shiny one, originating from the apex. The black melt is a product of a higher or longer lasting heat, causing a more complete melting of the stone and especially adding a higher amount of iron to the fusion crust.' Tschermak found on the backsides of the stones of Mocs a brown up to copper red, lightly shiny rind." Voilá! Thank you Herbert! The Meteorite-House-Team ______________________________________________ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
