Re: [meteorite-list] Brenham Instability Myth
It is nice to know that the pile of rust and olivine I have visibly decaying away in my collection is only doing so mythically. Rob McC --- McCartney Taylor [EMAIL PROTECTED] ha scritto: As long as Ghubara stability is being knocked around, I'd like to address Brenham. I'm currently writing a paper on the stability of Brenham, and thought I reveal a quick peek here on how this pallasite is actually stable. Brenham has acquired a bad reputation on stability. This reputation is more myth than fact. The myth really began with the 'meteorerodes' Nininger excavated from the alleged 'Haviland crater'. These meteorites were soaked in a nickle-leaching, electrolysis accelerating soup for 10,000+ years. Corrosion had already advanced to a point of leaving shale balls. Nininger then shared these rotten pallasites with other institutions. So the myth began... Yet, a few hundred yards away, rock stable Brenhams were found (the 750 pounder). Hint-don't buy water logged pallasites. Several collectors have stable Brenhams, some with and some without sealing. So empirical evidence supports this conclusion. My paper will address the fundamental corrosion of all iron meteorites, including Brenham. In a nutshell, its all about water and oxygen. Brenham is not a chloride attacked meteorite. It is complicated by sulfides that induce an electrolytic effect. Brenham has a higher porosity between the olivine and metal. If the natural soil moisture water is not removed effectively, they will rust. If it is removed, then properly sealed from Oxy and water, it's rock stable. Even the unaltered core of a badly eroded 'meteorerode' will be stable after being desiccated by vacuum then impregnate sealed with Opticon. Anyone who doesn't seal their irons from Oxy and water is playing dice against time. You will lose eventually. Be it Esquel or Canyon Diablo. Just don't blame the iron for rusting because you didn't seal it. We have enough myths in this business as it is. McCartney Taylor, IMCA 2670 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list M come Meteorite - Matteo Chinellato Via Triestina 126/A - 30173 - TESSERA, VENEZIA, ITALY Email: [EMAIL PROTECTED] Sale Site: http://www.mcomemeteorite.it Collection Site: http://www.mcomemeteorite.info MSN Messanger: spacerocks at hotmail.com EBAY.COM:http://members.ebay.com/aboutme/mcomemeteorite/ __ Do You Yahoo!? Poco spazio e tanto spam? Yahoo! Mail ti protegge dallo spam e ti da tanto spazio gratuito per i tuoi file e i messaggi http://mail.yahoo.it __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list Do you Yahoo!? Everyone is raving about the all-new Yahoo! Mail. http://new.mail.yahoo.com __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Brenham Instability Myth
Hi McCartney, Your absolutely correct, there are plenty of Brenham specimens that are stable. I know that there have been some in museums for 70 plus years that don't appear to have any problems and were probably ones found in drier areas so they aren't as prone to rust. I am sure they are keeping it a more environmentally controlled setting compared to most collectors. A little attention to any meteorite is in order to keep it preserved. Any iron (or for that matter) metal object that is exposed to weather/moisture will corrode as the Oxygen molecules attach themselves to the material. I've seen my share of rusty Brenhams and they can be a disaster. I've also seen Brenhams that are stable and only require a bit of care. I have a slice myself that doesn't cause me problems and I have had it over ten years. Those complaining about them or who have had bad experiences with them haven't handled enough specimens to know that there are decent specimens around if you know where to find them. I look forward to your report on the Brenhams and perhaps we can all learn a bit. --AL Mitterling __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: Re: [meteorite-list] Brenham Instability Myth
On Tue, 7 Nov 2006 03:23:30 -0800 (PST), you wrote: It is nice to know that the pile of rust and olivine I have visibly decaying away in my collection is only doing so mythically. Maybe the original post was just a mythunderstanding. :-) __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: Re: [meteorite-list] Brenham Instability Myth
I may have just mythread it. But I doubt I mythdiagnosed it. -mt On Tue, 2006-11-07 at 11:27 -0500, Darren Garrison wrote: Maybe the original post was just a mythunderstanding. :-) __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Brenham Instability Myth
In a message dated 11/7/2006 9:17:59 A.M. Mountain Standard Time, [EMAIL PROTECTED] writes: Hi McCartney, Your absolutely correct, there are plenty of Brenham specimens that are stable. I know that there have been some in museums for 70 plus years that don't appear to have any problems and were probably ones found in drier areas so they aren't as prone to rust. I am sure they are keeping it a more environmentally controlled setting compared to most collectors. A little attention to any meteorite is in order to keep it preserved. --AL Mitterling __ Yes Brenham can be stable. Did you take a good look at the Brenham slice in the Nininger Collection on my website? _http://www.impactika.com/nininger.htm_ (http://www.impactika.com/nininger.htm) It was prepared by Nininger some 50 years ago, It was kept in a cardboard box with the other specimens, the owner used to let his kids take those pieces to school for Show and Tell, over the years they were handled by dozens of sweaty, sticky fingers. The only thing I did when I received them is dust them a bit. Still the Brenham shows no rust at all. Anne M. Black www.IMPACTIKA.com [EMAIL PROTECTED] President, I.M.C.A. Inc. www.IMCA.cc __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Brenham Instability Myth
As long as Ghubara stability is being knocked around, I'd like to address Brenham. I'm currently writing a paper on the stability of Brenham, and thought I reveal a quick peek here on how this pallasite is actually stable. Brenham has acquired a bad reputation on stability. This reputation is more myth than fact. The myth really began with the 'meteorerodes' Nininger excavated from the alleged 'Haviland crater'. These meteorites were soaked in a nickle-leaching, electrolysis accelerating soup for 10,000+ years. Corrosion had already advanced to a point of leaving shale balls. Nininger then shared these rotten pallasites with other institutions. So the myth began... Yet, a few hundred yards away, rock stable Brenhams were found (the 750 pounder). Hint-don't buy water logged pallasites. Several collectors have stable Brenhams, some with and some without sealing. So empirical evidence supports this conclusion. My paper will address the fundamental corrosion of all iron meteorites, including Brenham. In a nutshell, its all about water and oxygen. Brenham is not a chloride attacked meteorite. It is complicated by sulfides that induce an electrolytic effect. Brenham has a higher porosity between the olivine and metal. If the natural soil moisture water is not removed effectively, they will rust. If it is removed, then properly sealed from Oxy and water, it's rock stable. Even the unaltered core of a badly eroded 'meteorerode' will be stable after being desiccated by vacuum then impregnate sealed with Opticon. Anyone who doesn't seal their irons from Oxy and water is playing dice against time. You will lose eventually. Be it Esquel or Canyon Diablo. Just don't blame the iron for rusting because you didn't seal it. We have enough myths in this business as it is. McCartney Taylor, IMCA 2670 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Brenham Instability Myth
my Brenham slice its go totaly destroynever buy another Matteo --- McCartney Taylor [EMAIL PROTECTED] ha scritto: As long as Ghubara stability is being knocked around, I'd like to address Brenham. I'm currently writing a paper on the stability of Brenham, and thought I reveal a quick peek here on how this pallasite is actually stable. Brenham has acquired a bad reputation on stability. This reputation is more myth than fact. The myth really began with the 'meteorerodes' Nininger excavated from the alleged 'Haviland crater'. These meteorites were soaked in a nickle-leaching, electrolysis accelerating soup for 10,000+ years. Corrosion had already advanced to a point of leaving shale balls. Nininger then shared these rotten pallasites with other institutions. So the myth began... Yet, a few hundred yards away, rock stable Brenhams were found (the 750 pounder). Hint-don't buy water logged pallasites. Several collectors have stable Brenhams, some with and some without sealing. So empirical evidence supports this conclusion. My paper will address the fundamental corrosion of all iron meteorites, including Brenham. In a nutshell, its all about water and oxygen. Brenham is not a chloride attacked meteorite. It is complicated by sulfides that induce an electrolytic effect. Brenham has a higher porosity between the olivine and metal. If the natural soil moisture water is not removed effectively, they will rust. If it is removed, then properly sealed from Oxy and water, it's rock stable. Even the unaltered core of a badly eroded 'meteorerode' will be stable after being desiccated by vacuum then impregnate sealed with Opticon. Anyone who doesn't seal their irons from Oxy and water is playing dice against time. You will lose eventually. Be it Esquel or Canyon Diablo. Just don't blame the iron for rusting because you didn't seal it. We have enough myths in this business as it is. McCartney Taylor, IMCA 2670 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list M come Meteorite - Matteo Chinellato Via Triestina 126/A - 30173 - TESSERA, VENEZIA, ITALY Email: [EMAIL PROTECTED] Sale Site: http://www.mcomemeteorite.it Collection Site: http://www.mcomemeteorite.info MSN Messanger: spacerocks at hotmail.com EBAY.COM:http://members.ebay.com/aboutme/mcomemeteorite/ __ Do You Yahoo!? Poco spazio e tanto spam? Yahoo! Mail ti protegge dallo spam e ti da tanto spazio gratuito per i tuoi file e i messaggi http://mail.yahoo.it __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Brenham Instability Myth
I agree Matteo, I have never bought a Brenham. It would be a waste of money. I have cleaned and sealed my Canyon Diablos, Sikhotes and Campos in exactly the same manner. The Cd's and Sikhotes held up well but my Campo continues to disintegrate no matter what I do. Those desiccant bags are useless. The sad thing is it was my first meteorite. The reason for my obsession. Here it is, and it isn't pretty : ( New Collectors beware. Viewing this may cause you to collect only stony meteorites ) http://pg.photos.yahoo.com/ph/spacerox2001/album?.dir=/8a8fre2 Bob - Original Message - From: M come Meteorite Meteorites [EMAIL PROTECTED] To: Meteorite-list@meteoritecentral.com Sent: Monday, November 06, 2006 3:43 PM Subject: Re: [meteorite-list] Brenham Instability Myth my Brenham slice its go totaly destroynever buy another Matteo --- McCartney Taylor [EMAIL PROTECTED] ha scritto: As long as Ghubara stability is being knocked around, I'd like to address Brenham. I'm currently writing a paper on the stability of Brenham, and thought I reveal a quick peek here on how this pallasite is actually stable. Brenham has acquired a bad reputation on stability. This reputation is more myth than fact. The myth really began with the 'meteorerodes' Nininger excavated from the alleged 'Haviland crater'. These meteorites were soaked in a nickle-leaching, electrolysis accelerating soup for 10,000+ years. Corrosion had already advanced to a point of leaving shale balls. Nininger then shared these rotten pallasites with other institutions. So the myth began... Yet, a few hundred yards away, rock stable Brenhams were found (the 750 pounder). Hint-don't buy water logged pallasites. Several collectors have stable Brenhams, some with and some without sealing. So empirical evidence supports this conclusion. My paper will address the fundamental corrosion of all iron meteorites, including Brenham. In a nutshell, its all about water and oxygen. Brenham is not a chloride attacked meteorite. It is complicated by sulfides that induce an electrolytic effect. Brenham has a higher porosity between the olivine and metal. If the natural soil moisture water is not removed effectively, they will rust. If it is removed, then properly sealed from Oxy and water, it's rock stable. Even the unaltered core of a badly eroded 'meteorerode' will be stable after being desiccated by vacuum then impregnate sealed with Opticon. Anyone who doesn't seal their irons from Oxy and water is playing dice against time. You will lose eventually. Be it Esquel or Canyon Diablo. Just don't blame the iron for rusting because you didn't seal it. We have enough myths in this business as it is. McCartney Taylor, IMCA 2670 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list M come Meteorite - Matteo Chinellato Via Triestina 126/A - 30173 - TESSERA, VENEZIA, ITALY Email: [EMAIL PROTECTED] Sale Site: http://www.mcomemeteorite.it Collection Site: http://www.mcomemeteorite.info MSN Messanger: spacerocks at hotmail.com EBAY.COM:http://members.ebay.com/aboutme/mcomemeteorite/ __ Do You Yahoo!? Poco spazio e tanto spam? Yahoo! Mail ti protegge dallo spam e ti da tanto spazio gratuito per i tuoi file e i messaggi http://mail.yahoo.it __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
