Superb photos. There is now a page at; http://www.meteorite-dealers.com/sierracolorada-zelmir.html
Check this out everyone! Gary On 13 Jan 2007 at 17:37, Zelimir Gabelica wrote: > Hello Dave, Gary, Bernd, Roger, list > > Dave, I am glad youthese mentioned euhedral (pyritohedral) troilite crystals. > > Well, I formely cut a Sierra Colorada (Argentina, L5) and two of the slices > obtained contained large (almost centimetric) vugs, some making the 3 mm > thick slice hollow! > Looking inside is again really breathtaking. > Several 5 to almost 10 mm (!) euhedral metallic crystals (also pyritohedral > in shape) can be seen, aligned or dispersed, some as quasi isolated single > crystals, onto the vug walls. > One of them is sectioned through cutting and that small cut face (clearly > seen on 2 pictures) indiceted to me, from the typical luster of the cut > section, that these could be schreibersite (also possible, though perhaps > less likely than troilite). See pictures 4741 and 4744. > > This is as spectacular as looking into a geode of a terrestrial mineral > (although I have never seen terrestrial schreibersite, if ever it exists, > because phosphides should readily yield phosphates in contact with air). > > My friend Roger Warin, not only expert in taking spectacular pictures of > thin sections (see some preceding posts), was also able to realize superb > close-ups of these geodes and "schreibersite" crystals. > I have no web site to store these peictures for the list but I am enclosing > 5 of them as attachments for Bernd, Dave, Roger and Gary . > > Should perhaps Gary find a way to put them on his URL and send the link to > the list, this wouild be just great! > Thanks! > > Pleased to read your comments. > > Take care, > > Zelimir > > > A 16:13 13/01/2007 +0000, Dave Harris a écrit : > >Hi, > >My Mt. Taz definitely has euhedral crystals in the vesicles - unfortunately, > >my binocular microscope only magnifies to about x35 or so and they are very > >small (very sub-mm ) but become apparent when the specimen is tilted and the > >light glints off the faces. > > > >The structure is typically pyritohedral in shape - I am assuming (a > >dangerous thing to do) that these are Troilite xls. > > > >..and I never got a response as to what gases made the vesicular structure! > > > > > >Best > > > > > > > >Dave > >IMCA #0092 > >Sec.BIMS > >www.bimsociety.org > >______________________________________________ > >Meteorite-list mailing list > >Meteorite-list@meteoritecentral.com > >http://six.pairlist.net/mailman/listinfo/meteorite-list > > Prof. Zelimir Gabelica > Université de Haute Alsace > ENSCMu, Lab. GSEC, > 3, Rue A. Werner, > F-68093 Mulhouse Cedex, France > Tel: +33 (0)3 89 33 68 94 > Fax: +33 (0)3 89 33 68 15 ______________________________________________ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list