Re: [meteorite-list] (House-AD): ORANGE fresh Chelyabinsk (was: Two special Chelyabinsk individualswith Brown Lee-side Crust - color-oriented!)
Yes indeed, Graham, one can find tons of infos as well as breathtaking reports on Svend's website. Isn't it fascinating, folks, how much such a stone can tell us not only from his very beginning, but also from his hot ride through the atmosphere? I must confess that I am always anew surprised and excited about that. Best - Matthias - Original Message - From: "Graham Ensor" To: "Steve Witt" Cc: ; "Martin Altmann" Sent: Wednesday, May 29, 2013 9:51 AM Subject: Re: [meteorite-list] (House-AD): ORANGE fresh Chelyabinsk (was: Two special Chelyabinsk individualswith Brown Lee-side Crust - color-oriented!) Hi AllSvend has an explanation for this brown crust on his excellent websitefrom several years back. http://www.niger-meteorite-recon.de/en/Meteorite_fusion_crust_2.htm Cheers, Graham On Tue, May 28, 2013 at 9:58 PM, Steve Witt wrote: Martin, Fred and all, I just got in some of the new meteorite from Mauritania showing the same thing. No black lipping, but brown crust on the back side of a fresh stone. Front: http://www.flickr.com/photos/stevewitt/8870872109/ Back: http://www.flickr.com/photos/stevewitt/8870872297/ Steve Witt IMCA #9020 http://imca.cc/ From: Martin Altmann To: meteorite-list@meteoritecentral.com Sent: Monday, May 27, 2013 4:03 PM Subject: Re: [meteorite-list] (House-AD): ORANGE fresh Chelyabinsk (was: Two special Chelyabinsk individualswith Brown Lee-side Crust - color-oriented!) Hi Fred, Exactly and Wow! With your Bensour it seems that just the same had happened! Has also the black rim! My guess at the time I got it, was simply a matter of primary fusion crust (the brownish one) and secondary fusion crust >(the darker one). Could it be a matter of altitude where it was formed? Speed & temperature of fusion?... There we definitely have to ask our experts of aerodynamics and chemistry here. To me it's evident, because the black crust lips over the brown one, that that brown on the back must have been formed before the crust on the apex. There are going things in flight on the back of the stones remember the Tamdakht-Couscous or the 12.5kg-flat heat-shield, which had also such fragments incorporated in the skin.. Now these color-crusts with Chelyabinsk (and Tissint). Here, look, our most shocking example! Is something for Jan, Menno or Rob, Because half of the stone is almost:ORANGE! Has 63.55g These sides are normal: http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_01.JPG http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_02.JPG But look at that! http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_03.JPG http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_04.JPG http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_05.JPG Hmm, shall we sell it too? O.k :-) Your Meteorite House Von: Meteoriteshow [mailto:meteorites...@free.fr] Gesendet: Montag, 27. Mai 2013 17:32 An: 'Martin Altmann'; meteorite-list@meteoritecentral.com Betreff: RE: [meteorite-list] (House-AD): Two special Chelyabinsk individualswith Brown Lee-side Crust - color-oriented! Hi All again, It seems that my link didn't work; let me try again, actually I have several pictures: http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/benguerir-7 9.6g(1).jpg http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/benguerir-7 9.6g(7).jpg http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/benguerir-7 9.6g(6).jpg http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/benguerir-7 9.6g(3).jpg Cheers Fred www.meteoriteshow.com IMCA #2491 -Message d'origine- De : meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] De la part de Martin Altmann Envoyé : lundi 27 mai 2013 14:26 À : meteorite-list@meteoritecentral.com Objet : [meteorite-list] (House-AD): Two special Chelyabinsk individualswith Brown Lee-side Crust - color-oriented! Importance : Haute Hello there, we have to share with you a pretty exciting observation. It was here already on the list, that some of you found on the first-pick Chelyabinskis places with a brownish, nevertheless fresh fusion crust. That phenomenon btw. you had sometimes also on a few Tissints, there the brown crust was even translucent (were horribly difficult to sell, because people watching the photos were skeptical, thought, they wouldn't be fresh, but weathered - and that, where no iron is present in Tissint to rust). Many of you blossomed during the last 3 months into true Chelyabinsk-experts, so please, pay attention to those two individuals and tell us your opinion: 75.45g http://www.meteoritenhaus.de/img/Chelyabinsk_75_45_g_01.JPG http://www.meteoritenhaus.de/img/Chelyabinsk_75_45_g_02.JPG http://www.meteoritenhaus.de/img/Chelyabinsk_75_45_g_03.JPG 68.37g http://www.mete
Re: [meteorite-list] (House-AD): ORANGE fresh Chelyabinsk (was: Two special Chelyabinsk individualswith Brown Lee-side Crust - color-oriented!)
Hi AllSvend has an explanation for this brown crust on his excellent websitefrom several years back. http://www.niger-meteorite-recon.de/en/Meteorite_fusion_crust_2.htm Cheers, Graham On Tue, May 28, 2013 at 9:58 PM, Steve Witt wrote: > Martin, Fred and all, > > I just got in some of the new meteorite from Mauritania showing the same > thing. No black lipping, but brown crust on the back side of a fresh stone. > > Front: http://www.flickr.com/photos/stevewitt/8870872109/ > > Back: http://www.flickr.com/photos/stevewitt/8870872297/ > > > > Steve Witt > IMCA #9020 > http://imca.cc/ > > > > From: Martin Altmann > To: meteorite-list@meteoritecentral.com > Sent: Monday, May 27, 2013 4:03 PM > Subject: Re: [meteorite-list] (House-AD): ORANGE fresh Chelyabinsk (was: Two > special Chelyabinsk individualswith Brown Lee-side Crust - color-oriented!) > > > Hi Fred, > > Exactly and Wow! > With your Bensour it seems that just the same had happened! > Has also the black rim! > > >>My guess at the time I got it, was simply a matter of primary fusion crust > (the brownish one) and secondary fusion crust >(the darker one). Could it be > a matter of altitude where it was formed? Speed & temperature of fusion?... > > There we definitely have to ask our experts of aerodynamics and chemistry > here. > > To me it's evident, because the black crust lips over the brown one, that > that brown on the back must have been formed before the crust on the apex. > > There are going things in flight on the back of the stones remember the > Tamdakht-Couscous or the 12.5kg-flat heat-shield, which had also such > fragments incorporated in the skin.. > > Now these color-crusts with Chelyabinsk (and Tissint). > > Here, look, our most shocking example! > Is something for Jan, Menno or Rob, > Because half of the stone is almost:ORANGE! > > Has 63.55g > > These sides are normal: > http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_01.JPG > > http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_02.JPG > > But look at that! > > http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_03.JPG > > http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_04.JPG > > http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_05.JPG > > Hmm, shall we sell it too? > O.k > > :-) > Your Meteorite House > > > > Von: Meteoriteshow [mailto:meteorites...@free.fr] > Gesendet: Montag, 27. Mai 2013 17:32 > An: 'Martin Altmann'; meteorite-list@meteoritecentral.com > Betreff: RE: [meteorite-list] (House-AD): Two special Chelyabinsk > individualswith Brown Lee-side Crust - color-oriented! > > Hi All again, > > It seems that my link didn't work; let me try again, actually I have several > pictures: > > http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/benguerir-7 > 9.6g(1).jpg > > http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/benguerir-7 > 9.6g(7).jpg > > http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/benguerir-7 > 9.6g(6).jpg > > http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/benguerir-7 > 9.6g(3).jpg > > > Cheers > > Fred > www.meteoriteshow.com > IMCA #2491 > > -Message d'origine- > De : meteorite-list-boun...@meteoritecentral.com > [mailto:meteorite-list-boun...@meteoritecentral.com] De la part de Martin > Altmann > Envoyé : lundi 27 mai 2013 14:26 > À : meteorite-list@meteoritecentral.com > Objet : [meteorite-list] (House-AD): Two special Chelyabinsk individualswith > Brown Lee-side Crust - color-oriented! > Importance : Haute > > Hello there, > > we have to share with you a pretty exciting observation. > It was here already on the list, that some of you found on the first-pick > Chelyabinskis places with a brownish, nevertheless fresh fusion crust. That > phenomenon btw. you had sometimes also on a few Tissints, there the brown > crust was even translucent (were horribly difficult to sell, because people > watching the photos were skeptical, thought, they wouldn't be fresh, but > weathered - and that, where no iron is present in Tissint to rust). > > Many of you blossomed during the last 3 months into true > Chelyabinsk-experts, > so please, pay attention to those two individuals and tell us your opinion: > > 75.45g > > http://www.meteoritenhaus.de/img/Chelyabinsk_75_45_g_01.JPG > http://www.meteoritenhaus.de/img/Chelyabinsk_75_45_g_02.JPG > http://www.meteoritenhaus.de/img/Chelyabinsk_75_45_g_03.JPG > > > 68.37g > > http://www.meteoritenhaus.de/img/Chelyabinsk_68_37_g_01.J
Re: [meteorite-list] (House-AD): ORANGE fresh Chelyabinsk (was: Two special Chelyabinsk individualswith Brown Lee-side Crust - color-oriented!)
Martin, Fred and all, I just got in some of the new meteorite from Mauritania showing the same thing. No black lipping, but brown crust on the back side of a fresh stone. Front: http://www.flickr.com/photos/stevewitt/8870872109/ Back: http://www.flickr.com/photos/stevewitt/8870872297/ Steve Witt IMCA #9020 http://imca.cc/ From: Martin Altmann To: meteorite-list@meteoritecentral.com Sent: Monday, May 27, 2013 4:03 PM Subject: Re: [meteorite-list] (House-AD): ORANGE fresh Chelyabinsk (was: Two special Chelyabinsk individualswith Brown Lee-side Crust - color-oriented!) Hi Fred, Exactly and Wow! With your Bensour it seems that just the same had happened! Has also the black rim! >My guess at the time I got it, was simply a matter of primary fusion crust (the brownish one) and secondary fusion crust >(the darker one). Could it be a matter of altitude where it was formed? Speed & temperature of fusion?... There we definitely have to ask our experts of aerodynamics and chemistry here. To me it's evident, because the black crust lips over the brown one, that that brown on the back must have been formed before the crust on the apex. There are going things in flight on the back of the stones remember the Tamdakht-Couscous or the 12.5kg-flat heat-shield, which had also such fragments incorporated in the skin.. Now these color-crusts with Chelyabinsk (and Tissint). Here, look, our most shocking example! Is something for Jan, Menno or Rob, Because half of the stone is almost: ORANGE! Has 63.55g These sides are normal: http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_01.JPG http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_02.JPG But look at that! http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_03.JPG http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_04.JPG http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_05.JPG Hmm, shall we sell it too? O.k :-) Your Meteorite House Von: Meteoriteshow [mailto:meteorites...@free.fr] Gesendet: Montag, 27. Mai 2013 17:32 An: 'Martin Altmann'; meteorite-list@meteoritecentral.com Betreff: RE: [meteorite-list] (House-AD): Two special Chelyabinsk individualswith Brown Lee-side Crust - color-oriented! Hi All again, It seems that my link didn't work; let me try again, actually I have several pictures: http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/benguerir-7 9.6g(1).jpg http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/benguerir-7 9.6g(7).jpg http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/benguerir-7 9.6g(6).jpg http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/benguerir-7 9.6g(3).jpg Cheers Fred www.meteoriteshow.com IMCA #2491 -Message d'origine- De : meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] De la part de Martin Altmann Envoyé : lundi 27 mai 2013 14:26 À : meteorite-list@meteoritecentral.com Objet : [meteorite-list] (House-AD): Two special Chelyabinsk individualswith Brown Lee-side Crust - color-oriented! Importance : Haute Hello there, we have to share with you a pretty exciting observation. It was here already on the list, that some of you found on the first-pick Chelyabinskis places with a brownish, nevertheless fresh fusion crust. That phenomenon btw. you had sometimes also on a few Tissints, there the brown crust was even translucent (were horribly difficult to sell, because people watching the photos were skeptical, thought, they wouldn't be fresh, but weathered - and that, where no iron is present in Tissint to rust). Many of you blossomed during the last 3 months into true Chelyabinsk-experts, so please, pay attention to those two individuals and tell us your opinion: 75.45g http://www.meteoritenhaus.de/img/Chelyabinsk_75_45_g_01.JPG http://www.meteoritenhaus.de/img/Chelyabinsk_75_45_g_02.JPG http://www.meteoritenhaus.de/img/Chelyabinsk_75_45_g_03.JPG 68.37g http://www.meteoritenhaus.de/img/Chelyabinsk_68_37_g_01.JPG http://www.meteoritenhaus.de/img/Chelyabinsk_68_37_g_02.JPG http://www.meteoritenhaus.de/img/Chelyabinsk_68_37_g_03.JPG http://www.meteoritenhaus.de/img/Chelyabinsk_68_37_g_04.JPG Well, baffling, aren't they? Both of them have a side, and ONLY one side, which is fully coated by the brown crust, while all other sides are black, as usual. Here: http://www.meteoritenhaus.de/img/Chelyabinsk_68_37_g_02.JPG And here: http://www.meteoritenhaus.de/img/Chelyabinsk_75_45_g_02.JPG And you see, that the brown-side is framed all around by a lipping, which is black, hence most would therefore say, only because of the rollover-lip, that the stones are flight-oriented. At least one can say, by means of the circular lipping around the edges, that the stones had for a longer time a stable position in flight. And that the brown side is the backside, the lee-side. And what is striking, is, tha
Re: [meteorite-list] (House-AD): ORANGE fresh Chelyabinsk (was: Two special Chelyabinsk individualswith Brown Lee-side Crust - color-oriented!)
A theory from the peanut gallery - Perhaps what we are seeing here is a product of the process of orientation. Maybe during the phase where the crust is liquified and flowing, certain more volatile elements will be burned off, and the remaining crustal material gathers on the trailing side of the meteorite and cools - but since it's chemistry has changed, it has a different visual appearance of color. This brown/black curiosity seems to be evident on falls that have stones known to be oriented or with well-rounded features - the blockier types of stones do not show this kind of process. ??? -- - 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 - On 5/27/13, Martin Altmann wrote: > Hi Fred, > > Exactly and Wow! > With your Bensour it seems that just the same had happened! > Has also the black rim! > > >>My guess at the time I got it, was simply a matter of primary fusion crust > (the brownish one) and secondary fusion crust >(the darker one). Could it > be > a matter of altitude where it was formed? Speed & temperature of fusion?... > > There we definitely have to ask our experts of aerodynamics and chemistry > here. > > To me it's evident, because the black crust lips over the brown one, that > that brown on the back must have been formed before the crust on the apex. > > There are going things in flight on the back of the stones remember the > Tamdakht-Couscous or the 12.5kg-flat heat-shield, which had also such > fragments incorporated in the skin.. > > Now these color-crusts with Chelyabinsk (and Tissint). > > Here, look, our most shocking example! > Is something for Jan, Menno or Rob, > Because half of the stone is almost:ORANGE! > > Has 63.55g > > These sides are normal: > http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_01.JPG > > http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_02.JPG > > But look at that! > > http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_03.JPG > > http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_04.JPG > > http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_05.JPG > > Hmm, shall we sell it too? > O.k > > :-) > Your Meteorite House > > > > Von: Meteoriteshow [mailto:meteorites...@free.fr] > Gesendet: Montag, 27. Mai 2013 17:32 > An: 'Martin Altmann'; meteorite-list@meteoritecentral.com > Betreff: RE: [meteorite-list] (House-AD): Two special Chelyabinsk > individualswith Brown Lee-side Crust - color-oriented! > > Hi All again, > > It seems that my link didn't work; let me try again, actually I have > several > pictures: > > http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/benguerir-7 > 9.6g(1).jpg > > http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/benguerir-7 > 9.6g(7).jpg > > http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/benguerir-7 > 9.6g(6).jpg > > http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/benguerir-7 > 9.6g(3).jpg > > > Cheers > > Fred > www.meteoriteshow.com > IMCA #2491 > > -Message d'origine- > De : meteorite-list-boun...@meteoritecentral.com > [mailto:meteorite-list-boun...@meteoritecentral.com] De la part de Martin > Altmann > Envoyé : lundi 27 mai 2013 14:26 > À : meteorite-list@meteoritecentral.com > Objet : [meteorite-list] (House-AD): Two special Chelyabinsk > individualswith > Brown Lee-side Crust - color-oriented! > Importance : Haute > > Hello there, > > we have to share with you a pretty exciting observation. > It was here already on the list, that some of you found on the first-pick > Chelyabinskis places with a brownish, nevertheless fresh fusion crust. That > phenomenon btw. you had sometimes also on a few Tissints, there the brown > crust was even translucent (were horribly difficult to sell, because people > watching the photos were skeptical, thought, they wouldn't be fresh, but > weathered - and that, where no iron is present in Tissint to rust). > > Many of you blossomed during the last 3 months into true > Chelyabinsk-experts, > so please, pay attention to those two individuals and tell us your opinion: > > 75.45g > > http://www.meteoritenhaus.de/img/Chelyabinsk_75_45_g_01.JPG > http://www.meteoritenhaus.de/img/Chelyabinsk_75_45_g_02.JPG > http://www.meteoritenhaus.de/img/Chelyabinsk_75_45_g_03.JPG > > > 68.37g > > http://www.meteoritenhaus.de/img/Chelyabinsk_68_37_g_01.JPG > http://www.meteoritenhaus.de/img/Chelyabinsk_68_37_g_02.JPG > http://www.meteoritenhaus.de/img/Chelyabinsk_68_37_g_03.JPG > http://www.meteoritenhaus.de/img/Chelyabinsk_68_37_g_04.JPG > > > Well, baffling, aren't they? > > Both of them have a side, and ONLY one side, which is fully coated by the > brown crust, > while all other sides are black, as usual. > > Here: > http://w
Re: [meteorite-list] (House-AD): ORANGE fresh Chelyabinsk (was: Two special Chelyabinsk individualswith Brown Lee-side Crust - color-oriented!)
Hi Fred, Exactly and Wow! With your Bensour it seems that just the same had happened! Has also the black rim! >My guess at the time I got it, was simply a matter of primary fusion crust (the brownish one) and secondary fusion crust >(the darker one). Could it be a matter of altitude where it was formed? Speed & temperature of fusion?... There we definitely have to ask our experts of aerodynamics and chemistry here. To me it's evident, because the black crust lips over the brown one, that that brown on the back must have been formed before the crust on the apex. There are going things in flight on the back of the stones remember the Tamdakht-Couscous or the 12.5kg-flat heat-shield, which had also such fragments incorporated in the skin.. Now these color-crusts with Chelyabinsk (and Tissint). Here, look, our most shocking example! Is something for Jan, Menno or Rob, Because half of the stone is almost:ORANGE! Has 63.55g These sides are normal: http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_01.JPG http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_02.JPG But look at that! http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_03.JPG http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_04.JPG http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_05.JPG Hmm, shall we sell it too? O.k :-) Your Meteorite House Von: Meteoriteshow [mailto:meteorites...@free.fr] Gesendet: Montag, 27. Mai 2013 17:32 An: 'Martin Altmann'; meteorite-list@meteoritecentral.com Betreff: RE: [meteorite-list] (House-AD): Two special Chelyabinsk individualswith Brown Lee-side Crust - color-oriented! Hi All again, It seems that my link didn't work; let me try again, actually I have several pictures: http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/benguerir-7 9.6g(1).jpg http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/benguerir-7 9.6g(7).jpg http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/benguerir-7 9.6g(6).jpg http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/benguerir-7 9.6g(3).jpg Cheers Fred www.meteoriteshow.com IMCA #2491 -Message d'origine- De : meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] De la part de Martin Altmann Envoyé : lundi 27 mai 2013 14:26 À : meteorite-list@meteoritecentral.com Objet : [meteorite-list] (House-AD): Two special Chelyabinsk individualswith Brown Lee-side Crust - color-oriented! Importance : Haute Hello there, we have to share with you a pretty exciting observation. It was here already on the list, that some of you found on the first-pick Chelyabinskis places with a brownish, nevertheless fresh fusion crust. That phenomenon btw. you had sometimes also on a few Tissints, there the brown crust was even translucent (were horribly difficult to sell, because people watching the photos were skeptical, thought, they wouldn't be fresh, but weathered - and that, where no iron is present in Tissint to rust). Many of you blossomed during the last 3 months into true Chelyabinsk-experts, so please, pay attention to those two individuals and tell us your opinion: 75.45g http://www.meteoritenhaus.de/img/Chelyabinsk_75_45_g_01.JPG http://www.meteoritenhaus.de/img/Chelyabinsk_75_45_g_02.JPG http://www.meteoritenhaus.de/img/Chelyabinsk_75_45_g_03.JPG 68.37g http://www.meteoritenhaus.de/img/Chelyabinsk_68_37_g_01.JPG http://www.meteoritenhaus.de/img/Chelyabinsk_68_37_g_02.JPG http://www.meteoritenhaus.de/img/Chelyabinsk_68_37_g_03.JPG http://www.meteoritenhaus.de/img/Chelyabinsk_68_37_g_04.JPG Well, baffling, aren't they? Both of them have a side, and ONLY one side, which is fully coated by the brown crust, while all other sides are black, as usual. Here: http://www.meteoritenhaus.de/img/Chelyabinsk_68_37_g_02.JPG And here: http://www.meteoritenhaus.de/img/Chelyabinsk_75_45_g_02.JPG And you see, that the brown-side is framed all around by a lipping, which is black, hence most would therefore say, only because of the rollover-lip, that the stones are flight-oriented. At least one can say, by means of the circular lipping around the edges, that the stones had for a longer time a stable position in flight. And that the brown side is the backside, the lee-side. And what is striking, is, that the lipping overlaps the brown crust, hence the brown crust must have formed simultaneously, while the front surface was melting. Now one could speculate, what could have caused that different crust - from the chip missing in one of the stones, we see that the material beneath the brown crust isn't special (anyway, on the sides the fusion crust for the same material is black). Thus maybe the different color could stem from a lack of oxygen, when it melted, on the lee-side of the stone in flight, where one has a low pressure/partial vacuum? We think, one could even speak of a new category of orientation: COLOR-ORIENTED! Well, if you like to have them, wha
