[meteorite-list] Possible meteorite fall in Britanny, France?
link in French: http://www.lefigaro.fr/actualite-france/2011/07/20/01016-20110720ARTFIG00405-une-boule-de-feu-traverse-le-ciel-breton.php Note the map of eyewitness accounts Arnaud The Tricottet Collection (Historic Minerals, Fossils Meteorites) http://www.thetricottetcollection.com/ http://www.facebook.com/TheTricottetCollection http://twitter.com/TricottetColl# __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh.
Hi The rainbow colour looks like oil to me. Maybe someone has used oil or WD40 to clean it. I sometimes encounter 'rainbow' tektites and the guys want extra because of it - in reality it is due to oil contamination, probably from the mining operations. Regards, Aubrey www.tektites.co.uk --- On Thu, 21/7/11, Martin Altmann altm...@meteorite-martin.de wrote: From: Martin Altmann altm...@meteorite-martin.de Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. To: meteorite-list@meteoritecentral.com Date: Thursday, 21 July, 2011, 0:33 Hi Mike, no worries, neither we understood it like that. Of course, if one looks to the photos, the first idea, which comes to one's mind is: oil. No idea, what causes this effect, maybe the composition. Also that strange tint the cut faces reveal. And especially worrying is the variety of the odd inclusions. I mean normally we all get already excited, whenever we find a carbonaceous fragment in a howardite, but what that stone has all for strange clasts - that is really not normal anymore. Since 1999 Stefan is in Morocco and since then we certainly had quite a bunch of materials in our hands, but such a weird polymict one - extremely unusual. And it seems that many collectors feel the same, if after such a short time now only three slices are left. Now all of the smaller ones are gone, sorry for that. But we have still a slice left, which we could subdivide into small partslices, if desired - but for that one has really to raise his finger. For the moment! Martin -Ursprüngliche Nachricht- Von: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] Im Auftrag von Galactic Stone Ironworks Gesendet: Donnerstag, 21. Juli 2011 00:48 An: Chladnis Heirs Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Hi Martin, I didn't mean to impeach the meteorite, I was just curious. This is indeed a mystery. Have any scientists offered or agreed to look at it? Perhaps hit the rainbow area with the microprobe or SEM? Aesthetically speaking, it's gorgeous and looks like Mother of Pearl. :) Best regards, MikeG -- - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone EOM - http://www.encyclopedia-of-meteorites.com/collection.aspx?id=1564 - On 7/20/11, Chladnis Heirs n...@chladnis-heirs.com wrote: No, it's natural! Martin -Ursprüngliche Nachricht- Von: Galactic Stone Ironworks [mailto:meteoritem...@gmail.com] Gesendet: Mittwoch, 20. Juli 2011 23:24 An: Chladnis Heirs Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Wow! That is one of the most beautiful howardites I have ever seen. Nice find. :) The rainbox coloration is very odd. Was the stone cleaned at any time? Best regards, MikeG - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone EOM - http://www.encyclopedia-of-meteorites.com/collection.aspx?id=1564 - On 7/20/11, Chladnis Heirs n...@chladnis-heirs.com wrote: Dear meteorite community, with this Special we have to introduce to you an enormous oddity. It is about a HED-meteorite of a kind, which we hadn't ever seen before in our careers before. It came in two stones, one of them was covered with a lush fusion crust, wonderfully structured by thick and oriented flowlines. And in some parts, that very crust displayed a gloss and a shine, iridescent in all colours of the rainbow; an effect, reminding almost to bismuth! Please take a look to the photos, where we tried to captured the effect: http://www.chladnis-heirs.com/new-meteorites/nwa6709.html The interior was no less a riddle for us. The distribution and sizes of the various fragments and clasts were unlike we had seen in any polymict HED before. A variety of clasts is of a kind, like we never had recovered in any Vesta meteorite. Please
Re: [meteorite-list] Possible meteorite fall in Britanny, France?
Merci, Arnaud. Two TV reports of 'France 2' and 'Ouest France' on the event: http://www.dailymotion.com/video/xjzzlw_19-juillet-meteorite-sur-la-bretagne_news http://www.dailymotion.com/video/xk0ixp_200711-une-meteorite-dans-le-ciel-de-bretagne_news Martin -Ursprüngliche Nachricht- Von: The Tricottet Collection tricottetc...@live.com Gesendet: 21.07.2011 10:12:56 An: MeteoriteList meteorite-list@meteoritecentral.com Betreff: [meteorite-list] Possible meteorite fall in Britanny, France? link in French: http://www.lefigaro.fr/actualite-france/2011/07/20/01016-20110720ARTFIG00405-une-boule-de-feu-traverse-le-ciel-breton.php Note the map of eyewitness accounts Arnaud The Tricottet Collection (Historic Minerals, Fossils Meteorites) http://www.thetricottetcollection.com/ http://www.facebook.com/TheTricottetCollection http://twitter.com/TricottetColl# __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Possible meteorite fall in Britanny, France?
Several press articles are available. There are many eye- and earwitness (!!) accounts, but where are the images of the skycams? There must be some... Arnaud? Fabien? Nos amis francais ? press coverage so far: http://www.francesoir.fr/actualite/scienceecologie/l-explosion-d-une-meteorite-dans-ciel-breton-est-confirmee-120430.html http://www.ouest-france.fr/region/bretagne_detail_-La-chasse-a-la-meteorite-bretonne-a-commence-_8619-1881077_actu.Htm http://www.ouest-france.fr/actu/actuDet_-Une-mysterieuse-explosion-dans-le-ciel-breton-ce-matin-a-5-h-15_39382-1878513_actu.Htm http://www.ouest-france.fr/actu/actuLocale_-Explosion-d-une-meteorite-dans-le-ciel-breton-div-class=boutonVideo-img-alt=Lien-vers-video-src=-design-images-overlay-video-articleVideo.gif-div-_39382-1879405--35238-aud_actu.Htm Martin -Ursprüngliche Nachricht- Von: karmaka karm...@email.de Gesendet: 21.07.2011 10:55:45 An: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] Possible meteorite fall in Britanny, France? Merci, Arnaud. Two TV reports of 'France 2' and 'Ouest France' on the event: http://www.dailymotion.com/video/xjzzlw_19-juillet-meteorite-sur-la-bretagne_news http://www.dailymotion.com/video/xk0ixp_200711-une-meteorite-dans-le-ciel-de-bretagne_news Martin -Ursprüngliche Nachricht- Von: The Tricottet Collection tricottetc...@live.com Gesendet: 21.07.2011 10:12:56 An: MeteoriteList meteorite-list@meteoritecentral.com Betreff: [meteorite-list] Possible meteorite fall in Britanny, France? link in French: http://www.lefigaro.fr/actualite-france/2011/07/20/01016-20110720ARTFIG00405-une-boule-de-feu-traverse-le-ciel-breton.php Note the map of eyewitness accounts Arnaud The Tricottet Collection (Historic Minerals, Fossils Meteorites) http://www.thetricottetcollection.com/ http://www.facebook.com/TheTricottetCollection http://twitter.com/TricottetColl# __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh.
Hi Aubrey, yes a striking effect, isn't it. That the stones were manipulated, we can categorically rule out. The material was from alone fresh enough, that nobody would get the idea to manipulate it, the chatoyant effect of the crust is visible in some places, but not over the whole crust, the material below the crust, visible in places where chips are missing as well as in the second stone, which was a fragment, is unaltered, very fresh and not discolored. And the stones stem from a serious source. Of course we observed also at some shows, that here and there, but all in all quite seldomly junk meteorites are artificially coloured and blackened to raise an impression, that they would be fresher and not so strongly weathered, but that is very easy detectable by the morphology of the surface - and sometimes even more quickly by the smell of the stones (and anyway such manipulations you won't find at the reliable and serious Moroccan colleagues.) And meanwhile, I would almost dare to say, that in the NWA-field we are old-stagers of a certain experience. (Stefan is regularly in Morocco since 1999). Best, Martin -Ursprüngliche Nachricht- Von: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] Im Auftrag von Aubrey Whymark Gesendet: Donnerstag, 21. Juli 2011 10:14 An: meteorite list Betreff: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Hi The rainbow colour looks like oil to me. Maybe someone has used oil or WD40 to clean it. I sometimes encounter 'rainbow' tektites and the guys want extra because of it - in reality it is due to oil contamination, probably from the mining operations. Regards, Aubrey www.tektites.co.uk --- On Thu, 21/7/11, Martin Altmann altm...@meteorite-martin.de wrote: From: Martin Altmann altm...@meteorite-martin.de Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. To: meteorite-list@meteoritecentral.com Date: Thursday, 21 July, 2011, 0:33 Hi Mike, no worries, neither we understood it like that. Of course, if one looks to the photos, the first idea, which comes to one's mind is: oil. No idea, what causes this effect, maybe the composition. Also that strange tint the cut faces reveal. And especially worrying is the variety of the odd inclusions. I mean normally we all get already excited, whenever we find a carbonaceous fragment in a howardite, but what that stone has all for strange clasts - that is really not normal anymore. Since 1999 Stefan is in Morocco and since then we certainly had quite a bunch of materials in our hands, but such a weird polymict one - extremely unusual. And it seems that many collectors feel the same, if after such a short time now only three slices are left. Now all of the smaller ones are gone, sorry for that. But we have still a slice left, which we could subdivide into small partslices, if desired - but for that one has really to raise his finger. For the moment! Martin -Ursprüngliche Nachricht- Von: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] Im Auftrag von Galactic Stone Ironworks Gesendet: Donnerstag, 21. Juli 2011 00:48 An: Chladnis Heirs Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Hi Martin, I didn't mean to impeach the meteorite, I was just curious. This is indeed a mystery. Have any scientists offered or agreed to look at it? Perhaps hit the rainbow area with the microprobe or SEM? Aesthetically speaking, it's gorgeous and looks like Mother of Pearl. :) Best regards, MikeG -- - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone EOM - http://www.encyclopedia-of-meteorites.com/collection.aspx?id=1564 - On 7/20/11, Chladnis Heirs n...@chladnis-heirs.com wrote: No, it's natural! Martin -Ursprüngliche Nachricht- Von: Galactic Stone Ironworks [mailto:meteoritem...@gmail.com] Gesendet: Mittwoch, 20. Juli 2011 23:24 An: Chladnis Heirs Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Wow! That is one of the most beautiful howardites I have ever seen. Nice find. :) The rainbox coloration is very odd. Was the stone cleaned at any time? Best
Re: [meteorite-list] Holbrook under the microscope...
Hello Nick and all! Thank you for posting your pictures. I find the small Holbrooks fascinating. And, it really is pushing me to invest in a microscope. I found a little iron there this weekend. It's a beautiful nickel iron blue, and may be oriented. However, it's small enough to require a microscope to really look at it. There are three things it could be, possibly. A. Part of a mass that fell out along the way and burned in the atmosphere. B. A new find. C. Not meteoric at all. I am not sure anyone can test something that small, but honestly do not know how small one can test (not destructively) or have any interest in doing so??? In 1941, there was an article written, maybe by Nininger...can't remember, about three scientist finding the smallest meteorites and they used the ant hill technique at Holbrook. At that time, it was also mentioned it would change how science looked at meteorites, but has it? I think my finds can match their's and I think your finds can also match them. I know it's a challenge weighing them as they are so small. I can not breathe around my grain scale when measuring and it takes about 5 minutes per measurement to get the scale to stop oscillating! I think most of the finds have been small at Holbrook. If you would like a copy of the results page, or if anyone does, I have that to share. These are the totals for each persons finds for the day. Was good meeting you and talking with you. Hope you come back for the 100th! Best! Jim Wooddell On Wed, Jul 20, 2011 at 7:46 PM, Nicholas Gessler, Ph.D. nick.gess...@duke.edu wrote: Thanks to Ruben Garcia and everyone on the 99th Anniversary hunt for an enjoyable and enlightening weekend. I've uploaded images of a number of the smallest finds collected by me and the ants. Collecting soil samples at regular intervals, washing them through standard screens, separating the residue with magnets and examining what's left under the microscope may tell us something more about the 1912 fall. With the notable exception of a few, the average size of finds seems to be falling. http://www.duke.edu/web/isis/gessler/holbrook.htm Nick Gessler __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Cerberus (Was: Hubble Space Telescope discovers 4th moon around Pluto)
Greetings, For those of us growing up with Pluto as a planet, it has never changed it's planet status. --AL - Original Message - From: Bernd V. Pauli bernd.pa...@paulinet.de To: meteorite-list@meteoritecentral.com Sent: Wednesday, July 20, 2011 4:55 PM Subject: [meteorite-list] Cerberus (Was: Hubble Space Telescope discovers 4th moon around Pluto) Any chance this moon could help restore Pluto's status as a planet??? Cheers, Bernd __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Lago Strobel and fractal craters on 1 km el balsitic plateau, Argentina, full text of 2009 research on Holocene water levels and prehistoric culture: Cox: Barron: Murray 2011.07.21
Lago Strobel and fractal craters on 1 km el balsitic plateau, Argentina, full text of 2009 research on Holocene water levels and prehistoric culture: Rich Murray 2011.07.21 Lago Strobel, Argentina -48.439649 -71.158664 .722 km el 10 km size many ground views on Google Earth http://www.climategeology.ethz.ch/publications/2010_Ariztegui_et_al_JQS.pdf Lake-level changes in central Patagonia (Argentina): crossing environmental thresholds for Lateglacial and Holocene human occupation DANIEL ARIZTEGUI, 1 * ADRIAN GILLI, 2 FLAVIO S. ANSELMETTI, 3 RAFAEL A. GON˜ I, 4 JUAN B. BELARDI 5 and SILVANA ESPINOSA 5 1 Section of Earth and Environmental Sciences, University of Geneva, Geneva, Switzerland 2 Geological Institute, ETH Zu¨ rich, Zu¨ rich, Switzerland 3 Eawag, Swiss Federal Institute of Aquatic Science and Technology, Duebendorf, Switzerland 4 Instituto Nacional de Antropologı´a y Pensamiento Latinoamericano, Universidad de Buenos Aires, UNCPBA, Buenos Aires, Argentina 5 CONICET/Universidad Nacional de la Patagonia Austral, Rı´o Gallegos, Santa Cruz, Argentina Ariztegui, D., Gilli, A., Anselmetti, F. S., Gon˜ i, R. A., Belardi, J. B. and Espinosa, S. 2010. Lake-level changes in central Patagonia (Argentina): crossing environmental thresholds for Lateglacial and Holocene human occupation. J. Quaternary Sci., Vol. 25 pp. 1092–1099. ISSN 0267-8179. Received 30 May 2008; Revised 18 September 2009; Accepted 22 September 2009 ABSTRACT: The role and extent of climate as a cause of the expansion and decline of human cultures is still debatable. It is clear, however, that human–environment interactions are enhanced and interplay more closely in climatically sensitive areas such as around hydrologically closed basins. Lago Cardiel is located at 498 S in the very arid rain shadow east of the Andes, providing an exceptionally receptive system to changes in hydrological balance. Results of a geophysical survey combined with sedimentological and geochemical studies provide a continuous Lateglacia-–Holocene record of substantial water-level changes. These variations, combined with archaeological results from the catchment area, offer a unique possibility to explore the pattern of peopling within this remote area of the globe and its possible relation to climate change. Human occupation in Patagonia is well documented towards the Andes throughout the entire Holocene. Archaeological data from the Lago Cardiel basin, however, show an apparent lack of human activity during the first part of this period, which coincides with well-constrained high lake levels. Our results show an intriguing coincidence between low lake level and increasing human occupation, suggesting that the Lago Cardiel basin has focused human use during intervals with relatively lower effective moisture such as during the Late Pleistocene, but its evidence may have been submerged. This interpretation is confirmed by archaeological remains from Lago Strobel, another perennial lake with a comparable catchment located in the same climatic region and thus sharing the same climatic history as Lago Cardiel. Copyright # 2009 John Wiley Sons, Ltd. KEYWORDS: eastern Patagonia; Late Pleistocene; Holocene; archaeology; limnogeology; human occupation. [ free full text ] __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Test
Yahoo upgrades my mail service. Just checking to see if it still works on the Met List. __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh.
Mild oxidation of silicate glass (fusion crust in this case) can produce a rainbow effect, too. I've seen this in basalts in the field. I think it is from a sheen of iron oxides created as the iron and/or sulfide weathers out. Cheers, Marc Fries On 7/21/11 1:13 AM, Aubrey Whymark wrote: Hi The rainbow colour looks like oil to me. Maybe someone has used oil or WD40 to clean it. I sometimes encounter 'rainbow' tektites and the guys want extra because of it - in reality it is due to oil contamination, probably from the mining operations. Regards, Aubrey www.tektites.co.uk --- On Thu, 21/7/11, Martin Altmannaltm...@meteorite-martin.de wrote: From: Martin Altmannaltm...@meteorite-martin.de Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. To: meteorite-list@meteoritecentral.com Date: Thursday, 21 July, 2011, 0:33 Hi Mike, no worries, neither we understood it like that. Of course, if one looks to the photos, the first idea, which comes to one's mind is: oil. No idea, what causes this effect, maybe the composition. Also that strange tint the cut faces reveal. And especially worrying is the variety of the odd inclusions. I mean normally we all get already excited, whenever we find a carbonaceous fragment in a howardite, but what that stone has all for strange clasts - that is really not normal anymore. Since 1999 Stefan is in Morocco and since then we certainly had quite a bunch of materials in our hands, but such a weird polymict one - extremely unusual. And it seems that many collectors feel the same, if after such a short time now only three slices are left. Now all of the smaller ones are gone, sorry for that. But we have still a slice left, which we could subdivide into small partslices, if desired - but for that one has really to raise his finger. For the moment! Martin -Ursprüngliche Nachricht- Von: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] Im Auftrag von Galactic Stone Ironworks Gesendet: Donnerstag, 21. Juli 2011 00:48 An: Chladnis Heirs Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Hi Martin, I didn't mean to impeach the meteorite, I was just curious. This is indeed a mystery. Have any scientists offered or agreed to look at it? Perhaps hit the rainbow area with the microprobe or SEM? Aesthetically speaking, it's gorgeous and looks like Mother of Pearl. :) Best regards, MikeG -- - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone EOM - http://www.encyclopedia-of-meteorites.com/collection.aspx?id=1564 - On 7/20/11, Chladnis Heirsn...@chladnis-heirs.com wrote: No, it's natural! Martin -Ursprüngliche Nachricht- Von: Galactic Stone Ironworks [mailto:meteoritem...@gmail.com] Gesendet: Mittwoch, 20. Juli 2011 23:24 An: Chladnis Heirs Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Wow! That is one of the most beautiful howardites I have ever seen. Nice find. :) The rainbox coloration is very odd. Was the stone cleaned at any time? Best regards, MikeG - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone EOM - http://www.encyclopedia-of-meteorites.com/collection.aspx?id=1564 - On 7/20/11, Chladnis Heirsn...@chladnis-heirs.com wrote: Dear meteorite community, with this Special we have to introduce to you an enormous oddity. It is about a HED-meteorite of a kind, which we hadn't ever seen before in our careers before. It came in two stones, one of them was covered with a lush fusion crust, wonderfully structured by thick and oriented flowlines. And in some parts, that very crust displayed a gloss and a shine, iridescent in all colours of the rainbow; an effect, reminding almost to bismuth! Please take a look to the photos, where we tried to captured the effect: http://www.chladnis-heirs.com/new-meteorites/nwa6709.html The interior was no less a riddle for us. The distribution and sizes of the various fragments and clasts were unlike we had seen in any
[meteorite-list] Shocked quartz and Kentland impact material
Greetings List, After collecting specimens from the Kentland Disturbance recently, I found many pieces of quartz. Is there any way (with a 10X loupe) to determine if this is shocked quartz from the meteorite impact? I also found several pieces of what appears to be a melt of some kind. I thought I remembered someone on the list posting about Kentland melt or impact breccia in the past. Can anyone shed some light on this or possibly post a link to some photos of Kentland impact material other than shatter cones? Thanx,Steve Steve Witt IMCA #9020 http://imca.cc/ __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh.
Great observation Marc. Iridescence is common on many pahoehoe lava flows on the Big Island, and is quite remarkable to see. Sent from Gary's iPhone On Jul 21, 2011, at 6:53 AM, Marc Fries mfri...@hotmail.com wrote: Mild oxidation of silicate glass (fusion crust in this case) can produce a rainbow effect, too. I've seen this in basalts in the field. I think it is from a sheen of iron oxides created as the iron and/or sulfide weathers out. Cheers, Marc Fries On 7/21/11 1:13 AM, Aubrey Whymark wrote: Hi The rainbow colour looks like oil to me. Maybe someone has used oil or WD40 to clean it. I sometimes encounter 'rainbow' tektites and the guys want extra because of it - in reality it is due to oil contamination, probably from the mining operations. Regards, Aubrey www.tektites.co.uk --- On Thu, 21/7/11, Martin Altmannaltm...@meteorite-martin.de wrote: From: Martin Altmannaltm...@meteorite-martin.de Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. To: meteorite-list@meteoritecentral.com Date: Thursday, 21 July, 2011, 0:33 Hi Mike, no worries, neither we understood it like that. Of course, if one looks to the photos, the first idea, which comes to one's mind is: oil. No idea, what causes this effect, maybe the composition. Also that strange tint the cut faces reveal. And especially worrying is the variety of the odd inclusions. I mean normally we all get already excited, whenever we find a carbonaceous fragment in a howardite, but what that stone has all for strange clasts - that is really not normal anymore. Since 1999 Stefan is in Morocco and since then we certainly had quite a bunch of materials in our hands, but such a weird polymict one - extremely unusual. And it seems that many collectors feel the same, if after such a short time now only three slices are left. Now all of the smaller ones are gone, sorry for that. But we have still a slice left, which we could subdivide into small partslices, if desired - but for that one has really to raise his finger. For the moment! Martin -Ursprüngliche Nachricht- Von: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] Im Auftrag von Galactic Stone Ironworks Gesendet: Donnerstag, 21. Juli 2011 00:48 An: Chladnis Heirs Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Hi Martin, I didn't mean to impeach the meteorite, I was just curious. This is indeed a mystery. Have any scientists offered or agreed to look at it? Perhaps hit the rainbow area with the microprobe or SEM? Aesthetically speaking, it's gorgeous and looks like Mother of Pearl. :) Best regards, MikeG -- - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone EOM - http://www.encyclopedia-of-meteorites.com/collection.aspx?id=1564 - On 7/20/11, Chladnis Heirsn...@chladnis-heirs.com wrote: No, it's natural! Martin -Ursprüngliche Nachricht- Von: Galactic Stone Ironworks [mailto:meteoritem...@gmail.com] Gesendet: Mittwoch, 20. Juli 2011 23:24 An: Chladnis Heirs Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Wow! That is one of the most beautiful howardites I have ever seen. Nice find. :) The rainbox coloration is very odd. Was the stone cleaned at any time? Best regards, MikeG - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone EOM - http://www.encyclopedia-of-meteorites.com/collection.aspx?id=1564 - On 7/20/11, Chladnis Heirsn...@chladnis-heirs.com wrote: Dear meteorite community, with this Special we have to introduce to you an enormous oddity. It is about a HED-meteorite of a kind, which we hadn't ever seen before in our careers before. It came in two stones, one of them was covered with a lush fusion crust, wonderfully structured by thick and oriented flowlines. And in some parts, that very crust displayed a gloss and a shine,
Re: [meteorite-list] Rainbow Fusion crust
I've seen this rainbow effect in the fusion crust of a few specimens in my life including Murchison, Ash Creek, and Buzzard Coulee. Jim Strope has a great example of Murchison with this coloration in the crust here: http://catchafallingstar.com/murchison723i.JPG The complete page: http://catchafallingstar.com/murchison723.htm Very interesting. I would love to know what causes it. -- Mike Bandli Historic Meteorites www.HistoricMeteorites.com and join us on Facebook: www.facebook.com/Meteorites1 IMCA #5765 --- -Original Message- From: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Gary Fujihara Sent: Thursday, July 21, 2011 10:06 AM To: Marc Fries Cc: meteorite-list@meteoritecentral.com Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Great observation Marc. Iridescence is common on many pahoehoe lava flows on the Big Island, and is quite remarkable to see. Sent from Gary's iPhone On Jul 21, 2011, at 6:53 AM, Marc Fries mfri...@hotmail.com wrote: Mild oxidation of silicate glass (fusion crust in this case) can produce a rainbow effect, too. I've seen this in basalts in the field. I think it is from a sheen of iron oxides created as the iron and/or sulfide weathers out. Cheers, Marc Fries On 7/21/11 1:13 AM, Aubrey Whymark wrote: Hi The rainbow colour looks like oil to me. Maybe someone has used oil or WD40 to clean it. I sometimes encounter 'rainbow' tektites and the guys want extra because of it - in reality it is due to oil contamination, probably from the mining operations. Regards, Aubrey www.tektites.co.uk --- On Thu, 21/7/11, Martin Altmannaltm...@meteorite-martin.de wrote: From: Martin Altmannaltm...@meteorite-martin.de Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. To: meteorite-list@meteoritecentral.com Date: Thursday, 21 July, 2011, 0:33 Hi Mike, no worries, neither we understood it like that. Of course, if one looks to the photos, the first idea, which comes to one's mind is: oil. No idea, what causes this effect, maybe the composition. Also that strange tint the cut faces reveal. And especially worrying is the variety of the odd inclusions. I mean normally we all get already excited, whenever we find a carbonaceous fragment in a howardite, but what that stone has all for strange clasts - that is really not normal anymore. Since 1999 Stefan is in Morocco and since then we certainly had quite a bunch of materials in our hands, but such a weird polymict one - extremely unusual. And it seems that many collectors feel the same, if after such a short time now only three slices are left. Now all of the smaller ones are gone, sorry for that. But we have still a slice left, which we could subdivide into small partslices, if desired - but for that one has really to raise his finger. For the moment! Martin -Ursprüngliche Nachricht- Von: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] Im Auftrag von Galactic Stone Ironworks Gesendet: Donnerstag, 21. Juli 2011 00:48 An: Chladnis Heirs Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Hi Martin, I didn't mean to impeach the meteorite, I was just curious. This is indeed a mystery. Have any scientists offered or agreed to look at it? Perhaps hit the rainbow area with the microprobe or SEM? Aesthetically speaking, it's gorgeous and looks like Mother of Pearl. :) Best regards, MikeG -- - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone EOM - http://www.encyclopedia-of-meteorites.com/collection.aspx?id=1564 - On 7/20/11, Chladnis Heirsn...@chladnis-heirs.com wrote: No, it's natural! Martin -Ursprüngliche Nachricht- Von: Galactic Stone Ironworks [mailto:meteoritem...@gmail.com] Gesendet: Mittwoch, 20. Juli 2011 23:24 An: Chladnis Heirs Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Wow! That is one of the most beautiful howardites I have ever seen. Nice find. :) The rainbox coloration is very odd. Was the stone cleaned at any
Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - iridescence
There is sometimes a similar though less dramatic iridescence on the crust of newly fallen ordinaary chondrites that have not been exposed to significant weathering. Jim Baxter - Original Message - From: Marc Fries mfri...@hotmail.com To: meteorite-list@meteoritecentral.com Sent: Thursday, July 21, 2011 9:53:21 AM GMT -08:00 US/Canada Pacific Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Mild oxidation of silicate glass (fusion crust in this case) can produce a rainbow effect, too. I've seen this in basalts in the field. I think it is from a sheen of iron oxides created as the iron and/or sulfide weathers out. Cheers, Marc Fries On 7/21/11 1:13 AM, Aubrey Whymark wrote: Hi The rainbow colour looks like oil to me. Maybe someone has used oil or WD40 to clean it. I sometimes encounter 'rainbow' tektites and the guys want extra because of it - in reality it is due to oil contamination, probably from the mining operations. Regards, Aubrey www.tektites.co.uk --- On Thu, 21/7/11, Martin Altmannaltm...@meteorite-martin.de wrote: From: Martin Altmannaltm...@meteorite-martin.de Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. To: meteorite-list@meteoritecentral.com Date: Thursday, 21 July, 2011, 0:33 Hi Mike, no worries, neither we understood it like that. Of course, if one looks to the photos, the first idea, which comes to one's mind is: oil. No idea, what causes this effect, maybe the composition. Also that strange tint the cut faces reveal. And especially worrying is the variety of the odd inclusions. I mean normally we all get already excited, whenever we find a carbonaceous fragment in a howardite, but what that stone has all for strange clasts - that is really not normal anymore. Since 1999 Stefan is in Morocco and since then we certainly had quite a bunch of materials in our hands, but such a weird polymict one - extremely unusual. And it seems that many collectors feel the same, if after such a short time now only three slices are left. Now all of the smaller ones are gone, sorry for that. But we have still a slice left, which we could subdivide into small partslices, if desired - but for that one has really to raise his finger. For the moment! Martin -Ursprüngliche Nachricht- Von: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] Im Auftrag von Galactic Stone Ironworks Gesendet: Donnerstag, 21. Juli 2011 00:48 An: Chladnis Heirs Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Hi Martin, I didn't mean to impeach the meteorite, I was just curious. This is indeed a mystery. Have any scientists offered or agreed to look at it? Perhaps hit the rainbow area with the microprobe or SEM? Aesthetically speaking, it's gorgeous and looks like Mother of Pearl. :) Best regards, MikeG -- - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone EOM - http://www.encyclopedia-of-meteorites.com/collection.aspx?id=1564 - On 7/20/11, Chladnis Heirsn...@chladnis-heirs.com wrote: No, it's natural! Martin -Ursprüngliche Nachricht- Von: Galactic Stone Ironworks [mailto:meteoritem...@gmail.com] Gesendet: Mittwoch, 20. Juli 2011 23:24 An: Chladnis Heirs Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Wow! That is one of the most beautiful howardites I have ever seen. Nice find. :) The rainbox coloration is very odd. Was the stone cleaned at any time? Best regards, MikeG - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone EOM - http://www.encyclopedia-of-meteorites.com/collection.aspx?id=1564 - On 7/20/11, Chladnis Heirsn...@chladnis-heirs.com wrote: Dear meteorite community, with this Special we have to introduce to you an enormous oddity. It is about a HED-meteorite of a kind, which we hadn't ever seen before
Re: [meteorite-list] Rainbow Fusion crust
Just some hours ago, list-member Stephan Kambach sent me a picture of a Murchison individual, showing such a rainbow effect. Best! Martin -Ursprüngliche Nachricht- Von: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] Im Auftrag von Mike Bandli Gesendet: Donnerstag, 21. Juli 2011 19:21 An: 'Gary Fujihara'; 'Marc Fries' Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] Rainbow Fusion crust I've seen this rainbow effect in the fusion crust of a few specimens in my life including Murchison, Ash Creek, and Buzzard Coulee. Jim Strope has a great example of Murchison with this coloration in the crust here: http://catchafallingstar.com/murchison723i.JPG The complete page: http://catchafallingstar.com/murchison723.htm Very interesting. I would love to know what causes it. -- Mike Bandli Historic Meteorites www.HistoricMeteorites.com and join us on Facebook: www.facebook.com/Meteorites1 IMCA #5765 --- -Original Message- From: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Gary Fujihara Sent: Thursday, July 21, 2011 10:06 AM To: Marc Fries Cc: meteorite-list@meteoritecentral.com Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Great observation Marc. Iridescence is common on many pahoehoe lava flows on the Big Island, and is quite remarkable to see. Sent from Gary's iPhone On Jul 21, 2011, at 6:53 AM, Marc Fries mfri...@hotmail.com wrote: Mild oxidation of silicate glass (fusion crust in this case) can produce a rainbow effect, too. I've seen this in basalts in the field. I think it is from a sheen of iron oxides created as the iron and/or sulfide weathers out. Cheers, Marc Fries On 7/21/11 1:13 AM, Aubrey Whymark wrote: Hi The rainbow colour looks like oil to me. Maybe someone has used oil or WD40 to clean it. I sometimes encounter 'rainbow' tektites and the guys want extra because of it - in reality it is due to oil contamination, probably from the mining operations. Regards, Aubrey www.tektites.co.uk --- On Thu, 21/7/11, Martin Altmannaltm...@meteorite-martin.de wrote: From: Martin Altmannaltm...@meteorite-martin.de Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. To: meteorite-list@meteoritecentral.com Date: Thursday, 21 July, 2011, 0:33 Hi Mike, no worries, neither we understood it like that. Of course, if one looks to the photos, the first idea, which comes to one's mind is: oil. No idea, what causes this effect, maybe the composition. Also that strange tint the cut faces reveal. And especially worrying is the variety of the odd inclusions. I mean normally we all get already excited, whenever we find a carbonaceous fragment in a howardite, but what that stone has all for strange clasts - that is really not normal anymore. Since 1999 Stefan is in Morocco and since then we certainly had quite a bunch of materials in our hands, but such a weird polymict one - extremely unusual. And it seems that many collectors feel the same, if after such a short time now only three slices are left. Now all of the smaller ones are gone, sorry for that. But we have still a slice left, which we could subdivide into small partslices, if desired - but for that one has really to raise his finger. For the moment! Martin -Ursprüngliche Nachricht- Von: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] Im Auftrag von Galactic Stone Ironworks Gesendet: Donnerstag, 21. Juli 2011 00:48 An: Chladnis Heirs Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Hi Martin, I didn't mean to impeach the meteorite, I was just curious. This is indeed a mystery. Have any scientists offered or agreed to look at it? Perhaps hit the rainbow area with the microprobe or SEM? Aesthetically speaking, it's gorgeous and looks like Mother of Pearl. :) Best regards, MikeG -- - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone EOM - http://www.encyclopedia-of-meteorites.com/collection.aspx?id=1564 - On 7/20/11, Chladnis Heirsn...@chladnis-heirs.com wrote: No, it's natural! Martin -Ursprüngliche
Re: [meteorite-list] Rainbow Fusion crust
Another nice example on Dave Gheesling's site: http://www.fallingrocks.com/Collections/Murchison.htm -- Mike Bandli Historic Meteorites www.HistoricMeteorites.com and join us on Facebook: www.facebook.com/Meteorites1 IMCA #5765 --- -Original Message- From: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Martin Altmann Sent: Thursday, July 21, 2011 10:39 AM To: meteorite-list@meteoritecentral.com Subject: Re: [meteorite-list] Rainbow Fusion crust Just some hours ago, list-member Stephan Kambach sent me a picture of a Murchison individual, showing such a rainbow effect. Best! Martin -Ursprüngliche Nachricht- Von: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] Im Auftrag von Mike Bandli Gesendet: Donnerstag, 21. Juli 2011 19:21 An: 'Gary Fujihara'; 'Marc Fries' Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] Rainbow Fusion crust I've seen this rainbow effect in the fusion crust of a few specimens in my life including Murchison, Ash Creek, and Buzzard Coulee. Jim Strope has a great example of Murchison with this coloration in the crust here: http://catchafallingstar.com/murchison723i.JPG The complete page: http://catchafallingstar.com/murchison723.htm Very interesting. I would love to know what causes it. -- Mike Bandli Historic Meteorites www.HistoricMeteorites.com and join us on Facebook: www.facebook.com/Meteorites1 IMCA #5765 --- -Original Message- From: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Gary Fujihara Sent: Thursday, July 21, 2011 10:06 AM To: Marc Fries Cc: meteorite-list@meteoritecentral.com Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Great observation Marc. Iridescence is common on many pahoehoe lava flows on the Big Island, and is quite remarkable to see. Sent from Gary's iPhone On Jul 21, 2011, at 6:53 AM, Marc Fries mfri...@hotmail.com wrote: Mild oxidation of silicate glass (fusion crust in this case) can produce a rainbow effect, too. I've seen this in basalts in the field. I think it is from a sheen of iron oxides created as the iron and/or sulfide weathers out. Cheers, Marc Fries On 7/21/11 1:13 AM, Aubrey Whymark wrote: Hi The rainbow colour looks like oil to me. Maybe someone has used oil or WD40 to clean it. I sometimes encounter 'rainbow' tektites and the guys want extra because of it - in reality it is due to oil contamination, probably from the mining operations. Regards, Aubrey www.tektites.co.uk --- On Thu, 21/7/11, Martin Altmannaltm...@meteorite-martin.de wrote: From: Martin Altmannaltm...@meteorite-martin.de Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. To: meteorite-list@meteoritecentral.com Date: Thursday, 21 July, 2011, 0:33 Hi Mike, no worries, neither we understood it like that. Of course, if one looks to the photos, the first idea, which comes to one's mind is: oil. No idea, what causes this effect, maybe the composition. Also that strange tint the cut faces reveal. And especially worrying is the variety of the odd inclusions. I mean normally we all get already excited, whenever we find a carbonaceous fragment in a howardite, but what that stone has all for strange clasts - that is really not normal anymore. Since 1999 Stefan is in Morocco and since then we certainly had quite a bunch of materials in our hands, but such a weird polymict one - extremely unusual. And it seems that many collectors feel the same, if after such a short time now only three slices are left. Now all of the smaller ones are gone, sorry for that. But we have still a slice left, which we could subdivide into small partslices, if desired - but for that one has really to raise his finger. For the moment! Martin -Ursprüngliche Nachricht- Von: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] Im Auftrag von Galactic Stone Ironworks Gesendet: Donnerstag, 21. Juli 2011 00:48 An: Chladnis Heirs Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Hi Martin, I didn't mean to impeach the meteorite, I was just curious. This is indeed a mystery. Have any scientists offered or agreed to look at it? Perhaps hit the rainbow area with the microprobe or SEM? Aesthetically speaking, it's gorgeous and looks like Mother of Pearl. :) Best regards,
Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - iridescence
That brings up a good question, then - is this iridescence the result of weathering, or does it come from heating? Either could cause mild oxidation. I had assumed that the iridescence I saw in basalts came from weathering, but perhaps it was a consequence of heating. Basalt gets plenty hot. :-) I like this discussion. Thoughts? On 7/21/11 10:12 AM, James Baxter wrote: There is sometimes a similar though less dramatic iridescence on the crust of newly fallen ordinaary chondrites that have not been exposed to significant weathering. Jim Baxter - Original Message - From: Marc Friesmfri...@hotmail.com To: meteorite-list@meteoritecentral.com Sent: Thursday, July 21, 2011 9:53:21 AM GMT -08:00 US/Canada Pacific Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Mild oxidation of silicate glass (fusion crust in this case) can produce a rainbow effect, too. I've seen this in basalts in the field. I think it is from a sheen of iron oxides created as the iron and/or sulfide weathers out. Cheers, Marc Fries On 7/21/11 1:13 AM, Aubrey Whymark wrote: Hi The rainbow colour looks like oil to me. Maybe someone has used oil or WD40 to clean it. I sometimes encounter 'rainbow' tektites and the guys want extra because of it - in reality it is due to oil contamination, probably from the mining operations. Regards, Aubrey www.tektites.co.uk --- On Thu, 21/7/11, Martin Altmannaltm...@meteorite-martin.de wrote: From: Martin Altmannaltm...@meteorite-martin.de Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. To: meteorite-list@meteoritecentral.com Date: Thursday, 21 July, 2011, 0:33 Hi Mike, no worries, neither we understood it like that. Of course, if one looks to the photos, the first idea, which comes to one's mind is: oil. No idea, what causes this effect, maybe the composition. Also that strange tint the cut faces reveal. And especially worrying is the variety of the odd inclusions. I mean normally we all get already excited, whenever we find a carbonaceous fragment in a howardite, but what that stone has all for strange clasts - that is really not normal anymore. Since 1999 Stefan is in Morocco and since then we certainly had quite a bunch of materials in our hands, but such a weird polymict one - extremely unusual. And it seems that many collectors feel the same, if after such a short time now only three slices are left. Now all of the smaller ones are gone, sorry for that. But we have still a slice left, which we could subdivide into small partslices, if desired - but for that one has really to raise his finger. For the moment! Martin -Ursprüngliche Nachricht- Von: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] Im Auftrag von Galactic Stone Ironworks Gesendet: Donnerstag, 21. Juli 2011 00:48 An: Chladnis Heirs Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Hi Martin, I didn't mean to impeach the meteorite, I was just curious. This is indeed a mystery. Have any scientists offered or agreed to look at it? Perhaps hit the rainbow area with the microprobe or SEM? Aesthetically speaking, it's gorgeous and looks like Mother of Pearl. :) Best regards, MikeG -- - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone EOM - http://www.encyclopedia-of-meteorites.com/collection.aspx?id=1564 - On 7/20/11, Chladnis Heirsn...@chladnis-heirs.com wrote: No, it's natural! Martin -Ursprüngliche Nachricht- Von: Galactic Stone Ironworks [mailto:meteoritem...@gmail.com] Gesendet: Mittwoch, 20. Juli 2011 23:24 An: Chladnis Heirs Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Wow! That is one of the most beautiful howardites I have ever seen. Nice find. :) The rainbox coloration is very odd. Was the stone cleaned at any time? Best regards, MikeG - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone EOM - http://www.encyclopedia-of-meteorites.com/collection.aspx?id=1564
Re: [meteorite-list] Rainbow Fusion crust
Simply amazing specimens. I wonder, has fusion crust with this iridescent appearance ever been examined by a lab or university? Greg S Sent from my iPhone On Jul 21, 2011, at 10:42 AM, Mike Bandli fuzzf...@comcast.net wrote: Another nice example on Dave Gheesling's site: http://www.fallingrocks.com/Collections/Murchison.htm -- Mike Bandli Historic Meteorites www.HistoricMeteorites.com and join us on Facebook: www.facebook.com/Meteorites1 IMCA #5765 --- -Original Message- From: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Martin Altmann Sent: Thursday, July 21, 2011 10:39 AM To: meteorite-list@meteoritecentral.com Subject: Re: [meteorite-list] Rainbow Fusion crust Just some hours ago, list-member Stephan Kambach sent me a picture of a Murchison individual, showing such a rainbow effect. Best! Martin -Ursprüngliche Nachricht- Von: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] Im Auftrag von Mike Bandli Gesendet: Donnerstag, 21. Juli 2011 19:21 An: 'Gary Fujihara'; 'Marc Fries' Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] Rainbow Fusion crust __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Rainbow Fusion crust
-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Hinweis von ESET Smart Security, Signaturdatenbank-Version 6314 (20110721) __ E-Mail wurde geprüft mit ESET Smart Security. http://www.eset.com __ Hinweis von ESET Smart Security, Signaturdatenbank-Version 6314 (20110721) __ E-Mail wurde geprüft mit ESET Smart Security. http://www.eset.com __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] NWA 6709 - iridescence
Pure speculation but my guess is that the rainbow sheen comes from refraction due to some fine layering of material on the surface. In the case of fresh unweathered falls it is almost certainly a phenomenon related to the crust formation itself but one could imagine weathering causing a similar effect due to thin layers of oxide or other weathering product. So maybe similar effect with two different causes?? In Martin and Stefans' case, seems more likely to be a primary crust related finding in a minimally weathered desert find rather than due to weathering, but again just speculation Jim Baxter - Original Message - From: Marc Fries mfri...@hotmail.com Cc: meteorite-list@meteoritecentral.com Sent: Thursday, July 21, 2011 10:47:39 AM GMT -08:00 US/Canada Pacific Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - iridescence That brings up a good question, then - is this iridescence the result of weathering, or does it come from heating? Either could cause mild oxidation. I had assumed that the iridescence I saw in basalts came from weathering, but perhaps it was a consequence of heating. Basalt gets plenty hot. :-) I like this discussion. Thoughts? On 7/21/11 10:12 AM, James Baxter wrote: There is sometimes a similar though less dramatic iridescence on the crust of newly fallen ordinaary chondrites that have not been exposed to significant weathering. Jim Baxter - Original Message - From: Marc Friesmfri...@hotmail.com To: meteorite-list@meteoritecentral.com Sent: Thursday, July 21, 2011 9:53:21 AM GMT -08:00 US/Canada Pacific Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Mild oxidation of silicate glass (fusion crust in this case) can produce a rainbow effect, too. I've seen this in basalts in the field. I think it is from a sheen of iron oxides created as the iron and/or sulfide weathers out. Cheers, Marc Fries On 7/21/11 1:13 AM, Aubrey Whymark wrote: Hi The rainbow colour looks like oil to me. Maybe someone has used oil or WD40 to clean it. I sometimes encounter 'rainbow' tektites and the guys want extra because of it - in reality it is due to oil contamination, probably from the mining operations. Regards, Aubrey www.tektites.co.uk --- On Thu, 21/7/11, Martin Altmannaltm...@meteorite-martin.de wrote: From: Martin Altmannaltm...@meteorite-martin.de Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. To: meteorite-list@meteoritecentral.com Date: Thursday, 21 July, 2011, 0:33 Hi Mike, no worries, neither we understood it like that. Of course, if one looks to the photos, the first idea, which comes to one's mind is: oil. No idea, what causes this effect, maybe the composition. Also that strange tint the cut faces reveal. And especially worrying is the variety of the odd inclusions. I mean normally we all get already excited, whenever we find a carbonaceous fragment in a howardite, but what that stone has all for strange clasts - that is really not normal anymore. Since 1999 Stefan is in Morocco and since then we certainly had quite a bunch of materials in our hands, but such a weird polymict one - extremely unusual. And it seems that many collectors feel the same, if after such a short time now only three slices are left. Now all of the smaller ones are gone, sorry for that. But we have still a slice left, which we could subdivide into small partslices, if desired - but for that one has really to raise his finger. For the moment! Martin -Ursprüngliche Nachricht- Von: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] Im Auftrag von Galactic Stone Ironworks Gesendet: Donnerstag, 21. Juli 2011 00:48 An: Chladnis Heirs Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Hi Martin, I didn't mean to impeach the meteorite, I was just curious. This is indeed a mystery. Have any scientists offered or agreed to look at it? Perhaps hit the rainbow area with the microprobe or SEM? Aesthetically speaking, it's gorgeous and looks like Mother of Pearl. :) Best regards, MikeG -- - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone EOM - http://www.encyclopedia-of-meteorites.com/collection.aspx?id=1564 - On 7/20/11, Chladnis
[meteorite-list] Met Science Inquiry kit, mahalos
Aloha listoids, I have been developing a science inquiry activity using real meteorites over the past few years. The activity is hands-on, minds-on and targets several national and Hawaii state educational standards and benchmarks. Students observe, measure, analyze their scientific research specimens in teams, before presenting their results in a mock symposium at the end of the session. A prize (met sample for each student) for the best research is incentive, but really is not needed because most students are self motivated by the challenge. I was in need of nice, inexpensive stony iron mets to complete my educational kits to be distributed to teachers in Alabama and Hawaii. I'd like to publicly thank Rob Wesel of Nahkla Dog Meteorites and Eric Olson of ELKK Meteorites for providing lots of mesosiderite samples for my kit at prices that will allow me to offer them to educators at truly affordable prices. Thanks Rob and Eric, and I know the true benefactors of your gracious actions will be the teachers and students who will use and learn from them. Mahalo nui loa, me kealoha pumehana. Gary Sent from Gary's iPhone __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Rainbow Fusion crust
://www.chladnis-heirs.com __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list -- __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Hinweis von ESET Smart Security, Signaturdatenbank-Version 6314 (20110721) __ E-Mail wurde geprüft mit ESET Smart Security. http://www.eset.com __ Hinweis von ESET Smart Security, Signaturdatenbank-Version 6314 (20110721) __ E-Mail wurde geprüft mit ESET Smart Security. http://www.eset.com __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] NWA 6709 - iridescence
Hi List so I ask my self what does irisation produce? lamellas (feldspar (labradorite)), spheres (opal), oxidation (bismuth skeleton crystals) any more? Thanks Andi Pure speculation but my guess is that the rainbow sheen comes from refraction due to some fine layering of material on the surface. In the case of fresh unweathered falls it is almost certainly a phenomenon related to the crust formation itself but one could imagine weathering causing a similar effect due to thin layers of oxide or other weathering product. So maybe similar effect with two different causes?? In Martin and Stefans' case, seems more likely to be a primary crust related finding in a minimally weathered desert find rather than due to weathering, but again just speculation Jim Baxter - Original Message - From: Marc Fries mfri...@hotmail.com Cc: meteorite-list@meteoritecentral.com Sent: Thursday, July 21, 2011 10:47:39 AM GMT -08:00 US/Canada Pacific Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - iridescence That brings up a good question, then - is this iridescence the result of weathering, or does it come from heating? Either could cause mild oxidation. I had assumed that the iridescence I saw in basalts came from weathering, but perhaps it was a consequence of heating. Basalt gets plenty hot. :-) I like this discussion. Thoughts? On 7/21/11 10:12 AM, James Baxter wrote: There is sometimes a similar though less dramatic iridescence on the crust of newly fallen ordinaary chondrites that have not been exposed to significant weathering. Jim Baxter - Original Message - From: Marc Friesmfri...@hotmail.com To: meteorite-list@meteoritecentral.com Sent: Thursday, July 21, 2011 9:53:21 AM GMT -08:00 US/Canada Pacific Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Mild oxidation of silicate glass (fusion crust in this case) can produce a rainbow effect, too. I've seen this in basalts in the field. I think it is from a sheen of iron oxides created as the iron and/or sulfide weathers out. Cheers, Marc Fries On 7/21/11 1:13 AM, Aubrey Whymark wrote: Hi The rainbow colour looks like oil to me. Maybe someone has used oil or WD40 to clean it. I sometimes encounter 'rainbow' tektites and the guys want extra because of it - in reality it is due to oil contamination, probably from the mining operations. Regards, Aubrey www.tektites.co.uk --- On Thu, 21/7/11, Martin Altmannaltm...@meteorite-martin.de wrote: From: Martin Altmannaltm...@meteorite-martin.de Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. To: meteorite-list@meteoritecentral.com Date: Thursday, 21 July, 2011, 0:33 Hi Mike, no worries, neither we understood it like that. Of course, if one looks to the photos, the first idea, which comes to one's mind is: oil. No idea, what causes this effect, maybe the composition. Also that strange tint the cut faces reveal. And especially worrying is the variety of the odd inclusions. I mean normally we all get already excited, whenever we find a carbonaceous fragment in a howardite, but what that stone has all for strange clasts - that is really not normal anymore. Since 1999 Stefan is in Morocco and since then we certainly had quite a bunch of materials in our hands, but such a weird polymict one - extremely unusual. And it seems that many collectors feel the same, if after such a short time now only three slices are left. Now all of the smaller ones are gone, sorry for that. But we have still a slice left, which we could subdivide into small partslices, if desired - but for that one has really to raise his finger. For the moment! Martin -Ursprüngliche Nachricht- Von: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] Im Auftrag von Galactic Stone Ironworks Gesendet: Donnerstag, 21. Juli 2011 00:48 An: Chladnis Heirs Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Hi Martin, I didn't mean to impeach the meteorite, I was just curious. This is indeed a mystery. Have any scientists offered or agreed to look at it? Perhaps hit the rainbow area with the microprobe or SEM? Aesthetically speaking, it's gorgeous and looks like Mother of Pearl. :) Best regards, MikeG -- - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone EOM -
Re: [meteorite-list] Rainbow Fusion crust
Agreed! Just so long as you have slightly less than two drinks, the world becomes a more wondrous place. But don't finish that second one: http://www.youtube.com/watch?v=usDuyoec6Lc ;-) --Rob P.S. I've seen this peacock ore coloring on some fresh falls, including Ash Creek (West, TX) and Buzzard Coulee, so I'm sure Chladni's Heirs is another example of it. -Original Message- From: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Alexander Seidel Sent: Thursday, July 21, 2011 12:11 PM To: Matthias Bärmann; meteorite-list@meteoritecentral.com; altm...@meteorite-martin.de Subject: Re: [meteorite-list] Rainbow Fusion crust Beer makes the mind clear! That is: if you don´t overdose it, of course!! And if you prefer the German or Czech brands with the brewing traditions of past centuries, w/o chemistry... :-) Alex Berlin/Germany Original-Nachricht Datum: Thu, 21 Jul 2011 20:28:15 +0200 Von: Matthias Bärmann majbaerm...@web.de An: Martin Altmann altm...@meteorite-martin.de, meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] Rainbow Fusion crust Martin, we all know that Bavarians - and you C'Heirs are at least half Bavarian - use to wash all new things after buying them first with beer. Dark, strong Bavarian beer from old monastery breweries. And ritually they clean parallely also themselves, inside, with this beer. So whether the shimmering and glimmering rainbow is an subjective or objective effect, is still uncertain. But it is. Just my *hicks* two beers, Matthias - Original Message - From: Martin Altmann altm...@meteorite-martin.de To: meteorite-list@meteoritecentral.com Sent: Thursday, July 21, 2011 7:39 PM Subject: Re: [meteorite-list] Rainbow Fusion crust Just some hours ago, list-member Stephan Kambach sent me a picture of a Murchison individual, showing such a rainbow effect. Best! Martin -Ursprüngliche Nachricht- Von: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] Im Auftrag von Mike Bandli Gesendet: Donnerstag, 21. Juli 2011 19:21 An: 'Gary Fujihara'; 'Marc Fries' Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] Rainbow Fusion crust I've seen this rainbow effect in the fusion crust of a few specimens in my life including Murchison, Ash Creek, and Buzzard Coulee. Jim Strope has a great example of Murchison with this coloration in the crust here: http://catchafallingstar.com/murchison723i.JPG The complete page: http://catchafallingstar.com/murchison723.htm Very interesting. I would love to know what causes it. -- Mike Bandli Historic Meteorites www.HistoricMeteorites.com and join us on Facebook: www.facebook.com/Meteorites1 IMCA #5765 __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Rainbow Fusion crust
I've seen this rainbow or blueing effect take place when quenching red hot metals in water or oil. So I'm wondering if rapid cooling may be the reason for this effect. Maybe even cool air on a rapid decent? Cheers, Jim K In a message dated 7/21/2011 12:21:37 P.M. Central Daylight Time, fuzzf...@comcast.net writes: I've seen this rainbow effect in the fusion crust of a few specimens in my life including Murchison, Ash Creek, and Buzzard Coulee. Jim Strope has a great example of Murchison with this coloration in the crust here: http://catchafallingstar.com/murchison723i.JPG The complete page: http://catchafallingstar.com/murchison723.htm Very interesting. I would love to know what causes it. -- Mike Bandli Historic Meteorites www.HistoricMeteorites.com and join us on Facebook: www.facebook.com/Meteorites1 IMCA #5765 --- -Original Message- From: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Gary Fujihara Sent: Thursday, July 21, 2011 10:06 AM To: Marc Fries Cc: meteorite-list@meteoritecentral.com Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Great observation Marc. Iridescence is common on many pahoehoe lava flows on the Big Island, and is quite remarkable to see. Sent from Gary's iPhone On Jul 21, 2011, at 6:53 AM, Marc Fries mfri...@hotmail.com wrote: Mild oxidation of silicate glass (fusion crust in this case) can produce a rainbow effect, too. I've seen this in basalts in the field. I think it is from a sheen of iron oxides created as the iron and/or sulfide weathers out. Cheers, Marc Fries On 7/21/11 1:13 AM, Aubrey Whymark wrote: Hi The rainbow colour looks like oil to me. Maybe someone has used oil or WD40 to clean it. I sometimes encounter 'rainbow' tektites and the guys want extra because of it - in reality it is due to oil contamination, probably from the mining operations. Regards, Aubrey www.tektites.co.uk --- On Thu, 21/7/11, Martin Altmannaltm...@meteorite-martin.de wrote: From: Martin Altmannaltm...@meteorite-martin.de Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. To: meteorite-list@meteoritecentral.com Date: Thursday, 21 July, 2011, 0:33 Hi Mike, no worries, neither we understood it like that. Of course, if one looks to the photos, the first idea, which comes to one's mind is: oil. No idea, what causes this effect, maybe the composition. Also that strange tint the cut faces reveal. And especially worrying is the variety of the odd inclusions. I mean normally we all get already excited, whenever we find a carbonaceous fragment in a howardite, but what that stone has all for strange clasts - that is really not normal anymore. Since 1999 Stefan is in Morocco and since then we certainly had quite a bunch of materials in our hands, but such a weird polymict one - extremely unusual. And it seems that many collectors feel the same, if after such a short time now only three slices are left. Now all of the smaller ones are gone, sorry for that. But we have still a slice left, which we could subdivide into small partslices, if desired - but for that one has really to raise his finger. For the moment! Martin -Ursprüngliche Nachricht- Von: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] Im Auftrag von Galactic Stone Ironworks Gesendet: Donnerstag, 21. Juli 2011 00:48 An: Chladnis Heirs Cc: meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Hi Martin, I didn't mean to impeach the meteorite, I was just curious. This is indeed a mystery. Have any scientists offered or agreed to look at it? Perhaps hit the rainbow area with the microprobe or SEM? Aesthetically speaking, it's gorgeous and looks like Mother of Pearl. :) Best regards, MikeG -- - Galactic Stone Ironworks - Meteorites Amber (Michael Gilmer) Website - http://www.galactic-stone.com Facebook - http://tinyurl.com/42h79my News Feed - http://www.galactic-stone.com/rss/126516 Twitter - http://twitter.com/galacticstone EOM - http://www.encyclopedia-of-meteorites.com/collection.aspx?id=1564 - On 7/20/11, Chladnis Heirsn...@chladnis-heirs.com wrote: No, it's natural! Martin -Ursprüngliche Nachricht- Von: Galactic Stone Ironworks
[meteorite-list] [AD] Canyon Diablo, Gibeon, Henbury.
Listoids, Up for sale: Canyon Diablo 3,5 kilos individual $ 1500.00. Canyon Diablo 2,7 kilos individual $ 1100.00. Canyon Diablo 1123 grams individual $ 500.00. Gibeon. Etched part. slice with crust. 240mm x 175mm x 4mm - 1668 grams. Offers starting at $1250.00 welcome. Henbury Full Slice (etched) 170mm x 110mm x 4mm - 665 grams. Fantastic piece!! Make an offer starting at $1250.00 Pictures request off list pls. Prices are excl shipping. Best, Jan IMCA #9833 __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Rainbow Fusion crust
Same thing for two recent finds of my team in march, we was surprised to found two chondrites fresh like that in this desert, and by the iridescent crust ! http://wwmeteorites.com/Fresh.html Both under classification, not the same fall, one is a brecciated LL, the other a L. Fabien Fabien Kuntz Météorites (ventes, expertise, conférences) Animation scientifique et technique WWMETEORITES (Siret : 511 850 612 00017) www.wwmeteorites.com __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Holbrook under the microscope...
Hello Jim, et al, Yes, I would recommend a microscope. There should be plenty of inspection scopes on the used surplus market. You might find a good one on eBay, but they show up in high tech swap meets if you have on in your area. Los Angeles and San Diego have them... How small is your tiny iron? Can you post a photo? With a microprobe you can analyze almost anything you can see in a compound microscope. It's only semi-destructive, since it drills an extremely small hole into the specimen. I wonder if your iron is from a separate fall, or perhaps an iron clast from Holbrook that broke up high in the atmosphere and became ablated and crusted on its way down? I don't think anything has changed as a result of anthill searches. I do think that it would be interesting to extend strewn field research towards millimeter and smaller residue from witnessed falls. After all, the fallout from the smoke trails must have come down somewhere, and unlike big fist-sized finds which are relatively rare, there should be gazillions of these tiny fragments and condensates. But this will take lots of soil samples and lots of effort (plus lots of probe time). Maybe I'll look into this... Cheers, Nick Nicholas Gessler, Ph.D. nick.gess...@duke.edu http://isis.duke.edu/gessler Research Associate Information Science Information Studies Duke University, Durham, North Carolina __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] FOR SALE AD: On ebay (5) Meteorites---Bassi, Tamdahkt, Unclass. Howardite Wadi Mellene.
Hi All, I have a Meteorite auction on Ebay that has (5) diiferent meteorites packaged in one lot, including a very nice 42 gram Unclassified with lots of metal showing, a 22 gram THICK SLICED Wadi Mellene, a very nice 6 plus gram piece of Bassi, a small piece of Tamdahkt/Tishka, and some nice micros of Howardite. **Please see them here: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=120750857795ssPageName=STRK:MESELX:IT **Please Note: If someone from the Meteorite list uses the BUY IT NOW, just mention that you are a list member and I will ship this nice lot to you FREE---as long as you live in the USA that is!!** I really would appreciate the look again!! Best, Kirk..:-) __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Meteor seen from above.
Anyone ever seen this before?...wow! http://www.nasa.gov/images/content/573236main_iss028e018218_full.jpg Graham, UK __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Rainbow Fusion crust
Jim K and Listerites I would have to agree that the heating and cooling process does cause an reaction where the surface does turn blue/rainbow color due to oxidation on the surface of meteorite on entry into the atmosphere. I think the two factors in this case is heat/flame and the oxygen present in the atmosphere that can dictate the amount of oxidation on the meteorite. I wonder in the example with the Murchison if the rainbow effect is also partly due to the amino acids and glucose? I have read that with metals that oxidize with heat and cooling can be due to contaminants and wonder with meteorites if these contaminants could be element or the chemical makeup that forms the surface of the meteorite to make this reaction happen. Now I just need to find me one that is oxidized on the whole surface. Shawn Alan IMCA 1633 eBaystore http://shop.ebay.com/photophlow/m.html meteorite-list] Rainbow Fusion crustJimski47 at aol.com Jimski47 at aol.com Thu Jul 21 15:42:29 EDT 2011 Previous message: [meteorite-list] Met Science Inquiry kit, mahalos Next message: [meteorite-list] [AD] Canyon Diablo, Gibeon, Henbury. Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] I've seen this rainbow or blueing effect take place when quenching red hot metals in water or oil. So I'm wondering if rapid cooling may be the reason for this effect. Maybe even cool air on a rapid decent? Cheers, Jim K In a message dated 7/21/2011 12:21:37 P.M. Central Daylight Time, fuzzfoot at comcast.net writes: I've seen this rainbow effect in the fusion crust of a few specimens in my life including Murchison, Ash Creek, and Buzzard Coulee. Jim Strope has a great example of Murchison with this coloration in the crust here: http://catchafallingstar.com/murchison723i.JPG The complete page: http://catchafallingstar.com/murchison723.htm Very interesting. I would love to know what causes it. -- Mike Bandli Historic Meteorites www.HistoricMeteorites.com and join us on Facebook: www.facebook.com/Meteorites1 IMCA #5765 --- -Original Message- From: meteorite-list-bounces at meteoritecentral.com [mailto:meteorite-list-bounces at meteoritecentral.com] On Behalf Of Gary Fujihara Sent: Thursday, July 21, 2011 10:06 AM To: Marc Fries Cc: meteorite-list at meteoritecentral.com Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. Great observation Marc. Iridescence is common on many pahoehoe lava flows on the Big Island, and is quite remarkable to see. Sent from Gary's iPhone On Jul 21, 2011, at 6:53 AM, Marc Fries mfries8 at hotmail.com wrote: Mild oxidation of silicate glass (fusion crust in this case) can produce a rainbow effect, too. I've seen this in basalts in the field. I think it is from a sheen of iron oxides created as the iron and/or sulfide weathers out. Cheers, Marc Fries On 7/21/11 1:13 AM, Aubrey Whymark wrote: Hi The rainbow colour looks like oil to me. Maybe someone has used oil or WD40 to clean it. I sometimes encounter 'rainbow' tektites and the guys want extra because of it - in reality it is due to oil contamination, probably from the mining operations. Regards, Aubrey www.tektites.co.uk --- On Thu, 21/7/11, Martin Altmannaltmann at meteorite-martin.de wrote: From: Martin Altmannaltmann at meteorite-martin.de Subject: Re: [meteorite-list] AD: Special: Truly baffling sensational Howardite - NWA 6709 - absolutely stunning and very fresh. To: meteorite-list at meteoritecentral.com Date: Thursday, 21 July, 2011, 0:33 Hi Mike, no worries, neither we understood it like that. Of course, if one looks to the photos, the first idea, which comes to one's mind is: oil. No idea, what causes this effect, maybe the composition. Also that strange tint the cut faces reveal. And especially worrying is the variety of the odd inclusions. I mean normally we all get already excited, whenever we find a carbonaceous fragment in a howardite, but what that stone has all for strange clasts - that is really not normal anymore. Since 1999 Stefan is in Morocco and since then we certainly had quite a bunch of materials in our hands, but such a weird polymict one - extremely unusual. And it seems that many collectors feel the same, if after such a short time now only three slices are left. Now all of the smaller ones are gone, sorry for that. But we have still a slice left, which we could subdivide into small partslices, if desired - but for that one has really to raise his finger. For the moment! Martin -Ursprüngliche Nachricht- Von: meteorite-list-bounces at meteoritecentral.com
[meteorite-list] Juno/GRAIL/NPP/MSL Update - July 21, 2011
July 21, 2011 George H. Diller Kennedy Space Center, Fla. 321-867-2468 george.h.dil...@nasa.gov STATUS REPORT: ELV-072111 EXPENDABLE LAUNCH VEHICLE STATUS REPORT Spacecraft: Juno Launch Vehicle: Atlas V-551 (AV-029) Launch Site: Cape Canaveral Air Force Station, Fla. Launch Pad: Space Launch Complex 41 Launch Date: Aug. 5, 2011 Launch Time: 11:34 a.m. EDT At the Astrotech payload processing facility near NASA's Kennedy Space Center, Juno was encapsulated into the Atlas payload fairing on July 18. It will be hoisted onto the payload transporter on July 22. Transportation to the launch pad is scheduled for July 26. There it will be hoisted atop the rocket and a series of interface checks will begin. At Launch Complex 41, the Atlas V was moved from the Vertical Integration Facility to the launch pad on July 18. A wet dress rehearsal was conducted on July 19. The rocket was fully loaded with liquid oxygen, liquid hydrogen and RP-1 fuel for this test, and a full countdown was performed. The Atlas V was moved back into the Vertical Integration Facility on July 20. The solar-powered Juno spacecraft will orbit Jupiter's poles 33 times to find out more about the gas giant's origins, structure, atmosphere and magnetosphere. Spacecraft: GRAIL (Gravity Recovery and Interior Laboratory) Launch Vehicle: Delta II 7920 Heavy Launch Site: Cape Canaveral Air Force Station, Fla. Launch Pad: Space Launch Complex 17B Launch Date: Sept. 8, 2011 Launch Time: 8:37:06 a.m. EDT and 9:16:12 a.m. EDT At Astrotech, a science system verification test was performed on GRAIL-A. Cruise spacecraft system functional testing has resumed on GRAIL-B. The spacecraft are to be moved to a hazardous processing facility on July 29 to begin preparations for fueling. Loading of the propellants is scheduled for Aug. 2-3. At NASA's Space Launch Complex 17B, cryogenic flow testing on the Delta II rocket was conducted on July 21. The first stage was filled with liquid oxygen to check for leaks, and this also served as a launch team certification. GRAIL's primary science objectives are to determine the structure of the lunar interior, from crust to core, and to advance understanding of the thermal evolution of the moon. Spacecraft: NPP (NPOESS Preparatory Project) Launch Vehicle: Delta II 7920 Launch Site: Vandenberg Air Force Base, Calif. Launch Pad: Space Launch Complex 2 Launch Date: Oct. 25, 2011 Launch Window: 2:47:35 a.m. - 2:57:35 a.m. PDT At Space Launch Complex 2, the Delta II first stage was hoisted into position in the launcher and secured on July 20. The three solid rocket boosters will be attached July 27-29. The second stage will be hoisted atop the first stage on Aug. 1. The payload fairing was hoisted into the mobile service tower on July 19 where it will be stored until the NPP spacecraft arrives at the pad in October. Spacecraft: Mars Science Laboratory (Curiosity) Launch Vehicle: Atlas V-541 (AV-028) Launch Site: Cape Canaveral Air Force Station, Fla. Launch Pad: Space Launch Complex 41 Launch Date: Nov. 25, 2011 Launch Time: 10:21 a.m. EST On July 15, the Curiosity rover was hoisted and rotated to the wheels-down position, placed on a test stand and the wheels deployed. On July 18, the rover was lowered onto its wheels on the high bay floor, and the instrument mast and science boom were deployed. Electrical testing of the rover is under way. The Atlas V for the mission is currently expected to arrive at Cape Canaveral Air Force Station late this month. It will be an Atlas V-541 configuration that will have four solid rocket boosters attached. The rover's 10 science instruments will search for signs of life, including methane, and help determine if the gas is from a biological or geological source. The unique rover will use a laser to look inside rocks and release the gasses so that its spectrometer can analyze and send the data back to Earth. Previous status reports are available at: http://www.nasa.gov/centers/kennedy/launchingrockets/status/index.html -end- __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Meteor seen from above.
A human-made meteor to be precise but still a very nice image. Here's the NASA caption for the image: + Station Crew Views Shuttle Landing This unprecedented view of the space shuttle Atlantis, appearing like a bean sprout against clouds and city lights, on its way home, was photographed by the Expedition 28 crew of the International Space Station. Airglow over Earth can be seen in the background. Image Credit: NASA + Thanks for posting the link, Graham. Clear skies, patrick On 21 Jul 2011, at 18:11, e-mail ensoramanda wrote: Anyone ever seen this before?...wow! http://www.nasa.gov/images/content/573236main_iss028e018218_full.jpg Graham, UK __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
