Thanks Mike. That is awesome and a big congrats to John. He's been very quiet lately, maybe he is still out on that same archaeological site.
On Thu, May 16, 2013 at 8:00 PM, Galactic Stone & Ironworks <[email protected]> wrote: > > Hi Bulletin Watchers, > > One new approval today. It is an old Oman find from 2005. Apparently > this ureilite was very stubborn and it chewed up several blades before > it could be subdued by the saw. > > Text - > > Sayh al Uhaymir 559 (SaU 559) 20°33.046’N, 56°39.336’E > > Al Wusta, Oman > > Found: Nov 2005 > > Classification: Ureilite > > History: During November 2005, John Blennert found a 107 g meteorite > in the desert of Oman. > > Physical characteristics: Exterior of the stone is rough, with > preferential (wind?) ablation of the pyroxene over olivine grains. > Difficult to cut, requiring seven diamond blades and one week to slice > the stone in half. Surface of the polished thin section is rough. > > Petrography: Typical ureilite dominated by roughly equal proportions > of anhedral, fine- to medium-grained (0.5 to 1 mm) olivine and > pyroxene. No graphite visible in the thin section. Extensive reduction > of the olivine. Diamond abundant and confirmed by powder X-ray > diffraction. Diamond clusters to 20 μm visible with a reflected-light > microscope. Interstitial metal mostly altered to iron oxides. > > Geochemistry: Olivine and pyroxene more reduced than in typical > ureilites. Olivine cores have Fa5.2±0.1, FeO/MnO = 11.5±0.7, Cr2O3 to > 0.5 wt%, CaO to 0.3 wt%, n=13, rims to Fa0.5. Low-Ca pyroxene cores > Fs4.7±0.1Wo4.89±0.04, n=7. > > Classification: Ureilite. > > Specimens: 32 g and one thin section at ASU. > > Link - http://www.lpi.usra.edu/meteor/metbull.php?code=57462 > > Best regards, > > MikeG > -- > ------------------------------------------------------------- > Web - http://www.galactic-stone.com > Facebook - http://www.facebook.com/galacticstone > Twitter - http://twitter.com/GalacticStone > Pinterest - http://pinterest.com/galacticstone > RSS - http://www.galactic-stone.com/rss/126516 > ------------------------------------------------------------- > ______________________________________________ > > Visit the Archives at http://www.meteorite-list-archives.com > Meteorite-list mailing list > [email protected] > http://six.pairlist.net/mailman/listinfo/meteorite-list ______________________________________________ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
