[meteorite-list] (sans objet)
Envoyé avec BlackBerry® d'Orange __ 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] Meteorite Picture of the Day
Australite http://www.tucsonmeteorites.com/mpod.asp __ 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] The Foots Music - specimens
Hi Doug and all, I have sent them an email inquiring re available mp3s or CDs or Whatever available via PayPal with the suggestion that if they are not Already available they may want to consider making them available. We will see. Too late to phone now (3AM) Michael PS: Some specimens for the FOOTES have come in...check out at: http://michaelbloodmeteorites.com/AuctionTucson12.html On 1/25/12 8:57 PM, Met. Mexico Doug mexicod...@aim.com wrote: Hi Michael, you are a good man to take a noble cause during the Tucson re-shuffle; Is it generally known here that Gary and CJ are accomplished singers and string instrument performers, mostly dealing with faith? They have a lullybying harmonic tonal quality when joined together by music. One of his songs has a sentimental stanza which gives me hope also to carry on against the immeasurable beating tides: When times are hard The world closes in You light the darkness Leading me on To the light of a better me I would like to buy the mp3 of this single, but cannot find a link for downloadable file which only requires PayPal rather than a credit card. I realize that this is a drop in the bucket, but lots of drops in the bucket breed oceans ... Can you or someone find out whether there are paypal-links for these and/or other singles and albums of theirs? For those who want to unite in a sincere common cause and count their voices all while appreciating the variety of talents and faiths among us, perhaps the Footes' music can be a vehicle of strength and togetherness as sharing music can be an incredibly powerful force for the human spirit, both for they who play and they who listen and join in; Kindest wishes Doug -Original Message- From: Michael Blood mlbl...@cox.net To: Meteorite List meteorite-list@meteoritecentral.com Sent: Wed, Jan 25, 2012 9:39 pm Subject: Re: [meteorite-list] The Foots Kind list members, A couple of list members have asked me for Gary CJ Foote's PayPal address as they would prefer just to send them some $ directly. If you do, please mark it Personal and Gift in the PayPal Page so that PayPal doesn't take 3%. You can PayPal them at: c...@webbers.com If all our members sent even $10 it would have a MAJOR Impact on their lives - hell, even $5 or even $3 each Thanks, Michael __ 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
[meteorite-list] MUONIONALUSTA MAN - One Wicked-Looking Meteorite Slice!
Looks more like ET (from the movie, not from Oregon) Paul Swartz http://www.rocksfromspace.org/muonionalusta.html __ 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] Special: AD: New Mars-Fall Tissint - Polished Fullslices!
Dear community, Now we all were occupied with admiring the fragments and the rare individuals that new epoch-making fall yielded; we studied the exterior, were amazed about the variety of different fusion crusts, took a glance on the interior by means of broken sides or crust-free fragments. Now it is highest time to subject Tissint to the other viewing habits we are used to - and here we are proud to present now the first masterly prepared slices: And what for slices! http://www.chladnis-heirs.com/specials/tissint.html In principle here could end our Special - in leaving you alone in your awe. Well worth it was, that we pushed away our twinge of conscience to slice up one of the scarce perfect individuals, any collector would rip his arm off for. Look, how we were rewarded. See those fantastically pastel green olivine crystals, which strongly remind us of those in NWA 5789. Take a closer look, you'll find even a few single ones, which seems almost to change from opaque to translucent. They are sitting in a very accentuated matrix-grid, which is in some ways similar to Shergotty or Zagami, though finer and on a smaller scale. And finally those dramatic and huge melt pockets and maskelynite blotches. With all historical respect for the four other observed Martian falls, Tissint is macroscopically the most spectacular and the most aesthetical among the observed falls. For sure. Masterly polished by Stefan's craftsmanship, completely surrounded by fusion crust, with at best only here and there naturally a small chip missing, are these those adorable specimens, which also in later decades you'll take in your hands, with a silent and almost triumphal blitheness, to have been once so wise, to have saved these specimen just in the days of the birth of this so famous meteorite. And if you were one of the few lucky ones, who were able to gather one of the few complete individuals, such a fullslice is almost a must to add. (And those who weren't - watch the endcut, a perfect alternative or contact us for still a superb complete individual). Enjoy! Stefan Martin Chladni's Heirs Munich - Berlin Fine Meteorites for Science Collectors http://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
Re: [meteorite-list] MUONIONALUSTA MAN - One Wicked-Looking Meteorite Slice!
Hey Paul, You're right. I just realized I should have named it : Muonionalusta MONSTER Instead of Muonionalusta Man. Best wishes, Robert Woolard Sent from my iPhone On Jan 26, 2012, at 5:22 AM, valpar...@aol.com wrote: Looks more like ET (from the movie, not from Oregon) Paul Swartz http://www.rocksfromspace.org/muonionalusta.html __ 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
[meteorite-list] unofficial tucson show pics
Good morning list.Hey I was wondering if anyone has shot any pics of the unofficial opening of the tucson show? I know it opens up saturday,but pics will be nice for those who have to WAIT till next week to go.Any and pics will be nice to see what we have to salivate over.Oh well till next week,have fun and have a great day. -- Steve R. Anold, chicago, ill. __ 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] Tissint Meteorite Hunting Video
Dear List, http://lunarmeteoritehunters.blogspot.com/2012/01/tissint-morocco-martian-meteorite.html Dirk Ross...Tokyo __ 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] Italia Bolide Meteor Fireball
Dear List, Italy took another hit. Dirk Ross...Tokyo http://lunarmeteoritehunters.blogspot.com/2012/01/italia-fireball-meteor-bolide-24jan2012.html __ 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] Threat From Retired Satellite Exceeds NASA Standards
http://www.spaceflightnow.com/news/n1201/26rxtereentry/ Threat from retired satellite exceeds NASA standards BY STEPHEN CLARK SPACEFLIGHT NOW January 26, 2012 The Rossi X-ray Timing Explorer, a NASA satellite retired from service Jan. 5, will present a 1-in-1,000 chance of harming someone when it makes an uncontrolled fall from Earth orbit some time after 2014, a level ten times riskier than NASA now requires for re-entering spacecraft, according to an agency spokesperson. The forecast for the satellite's re-entry calls for a return between 2014 and 2023. Fluctuations in solar activity cause the atmosphere to expand and contract, making it difficult to accurately predict when uncontrolled satellites will re-enter. The satellite, launched in December 1995, was designed before NASA issued standards for public safety from re-entering spacecraft. NASA satellites must now have a probability of striking a person of less than 1-in-10,000. This satellite was launched four months before the first NASA standard on orbital debris mitigation and re-entry risk management was issued, said Beth Dickey, a spokesperson at NASA Headquarters in Washington. As such, it was not subject to the re-entry risk guideline, since it had already been built. NASA's Upper Atmospheric Research Satellite, or UARS, re-entered the atmosphere in September, spreading debris over the unpopulated Pacific Ocean. It carried a risk of 1-in-3,200 of a human casualty, but the event caused no injuries or damage. Later, NASA did evaluate the re-entry risk for RXTE and found it to be on the order of 1-in-1,000, or about ten times the maximum desired risk level, Dickey told Spaceflight Now. Satellites with the risk of RXTE typically re-enter ever few years. No one has ever been reported hurt by falling satellite debris. The RXTE spacecraft does not carry propellant, so leftover rocket fuel and tanks are not a concern, according to NASA officials. Germany's ROSAT X-ray observatory uncontrollably crashed back into Earth's atmosphere in October with a 1-in-2,000 risk of harming a person. There were no reports of casualties from ROSAT's re-entry. RXTE is circling 294 miles above Earth in an orbit that passes over regions between 23 degrees north and south latitude. When the 7,000-pound satellite falls from orbit, it will only threaten areas lying under its equatorial flight path. During its 16-year mission, RXTE gave researchers glimpses of the inner workings of black holes and neutron stars. __ 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] Comet Corpses in the Solar Wind
http://science.nasa.gov/science-news/science-at-nasa/2012/20jan_cometcorpse/ Comet Corpses in the Solar Wind NASA Science News January 20, 2012 A paper published in today's issue of Science raises an intriguing new possibility for astronomers: unearthing comet corpses in the solar wind. The new research is based on dramatic images of a comet disintegrating in the sun's atmosphere last July. Comet Lovejoy grabbed headlines in Dec. 2011 when it plunged into the sun's atmosphere and emerged again relatively intact. But it was not the first comet to graze the sun. Last summer a smaller comet took the same trip with sharply different results. Comet C/2011 N3 (SOHO) was completely destroyed on July 6, 2011, when it swooped 100,000 km above the stellar surface. NASA's Solar Dynamics Observatory (SDO) recorded the disintegration. For the first time, we saw a comet move across the face of the sun and disappear, says Dean Pesnell, a co-author of the Science paper and Project Scientist for SDO at the Goddard Space Flight Center. It was unprecedented. In Jan. 20th issue of Science, the research team reported their analysis of the SDO images. A key finding was the amount of material deposited into the sun's atmosphere. The comet dissolved into more than a million tons of electrically charged gas, says Pesnell. We believe these vapors eventually mixed with the solar wind and blew back into the solar system. Pesnell says it might be possible to detect such comet corpses as they waft past Earth. Comets are rich in ice (frozen H_2 O), so when they dissolve in the hot solar atmosphere, the gaseous remains contain plenty of oxygen and hydrogen. A solar wind stream containing extra oxygen could be a telltale sign of a disintegrated comet. Other elements abundant in comets would provide similar markers. Comet corpses are probably plentiful. There's a busy family of comets known as Kreutz sungrazers, thought to be fragments of a giant comet that broke apart hundreds of years ago. Every day or so, SOHO sees one plunge into the sun and vanish. Each disintegration event creates a puff of comet vapor that might be detectable by spacecraft sampling the solar wind. Why bother? Researchers are beginning to think of sungrazers as 'test particles' for studying the sun's atmosphere--kind of like tossing rocks into a pond. A lot can be learned about the pond by studying the ripples. Indeed, SDO observed some extraordinary interactions between the sun and the doomed comet. As C/2011 N3 (SOHO) moved through the hot corona, cold gas lifted off the comet's nucleus and rapidly (within minutes) warmed to more than 500,000K, hot enough to shine brightly in SDO's extreme ultraviolet telescopes. The evaporating comet gas was glowing as brightly as the sun behind it, marvels Pesnell. The gas was also rapidly ionized by a process called charge exchange, which made the gas responsive to the sun's magnetic field. Caught in the grip of magnetic loops which thread the solar corona, the comet's ionized tail wagged back and forth wildly in the moments before final disintegration. Watching this kind of sun-comet interaction could reveal new things about the thermal and magnetic structure of the solar atmosphere. Likewise, measuring how long it takes for comet corpses to reach Earth, and then sampling the gases when they arrive, could be very informative. Before SDO, no one dreamed we could observe a comet disintegrate inside the sun's atmosphere, says Pesnell who confesses that even he was a skeptic. But now, I'm a believer. The original research described in this story may be found in the Jan. 20th edition of Science: Destruction of Sun-grazing comet C/2011 N3 (SOHO) http://www.sciencemag.org/content/335/6066/324 by C. J. Schrijver, J. C. Brown, K. Battams, P. Saint-Hilaire, W. Liu, H. Hudson, and W. D. Pesnell Author:Dr. Tony Phillips Production editor: Dr. Tony Phillips Credit: Science@NASA __ 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] THE WILLAMETTE METEORITE
http://www.rocksfromspace.org/willamette.html __ 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] Is there a Main Mass list?
Michael, You indicate here that the Bensour main mass is 9.2 kg, but that it is broken into three pieces. Which of the three pieces is the main mass, and how big is it? http://www.meteoriteguy.com/bensour-hunt.htm Truly a spectacular meteorite, by the way! Dave www.fallingrocks.com -Original Message- From: meteorite-list-boun...@meteoritecentral.com [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Michael Farmer Sent: Tuesday, January 24, 2012 11:54 AM To: petersche...@rcn.com Cc: meteorite-list@meteoritecentral.com; Jeff Grossman Subject: Re: [meteorite-list] Is there a Main Mass list? It should be the largest remaining piece of a known meteorite, certainly not a complicated issue. Michael Farmer Sent from my iPad On Jan 24, 2012, at 9:43 AM, petersche...@rcn.com wrote: Hi Jeff, I have always used your definition. Unfortunately the term main mass has become a marketing term meaning the largest know sample Thanks, Peter Scherff __ 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] Special: AD: New Mars-Fall Tissint - Polished Fullslices!
Beautiful meteorite in all waysnice work, Graham On Thu, Jan 26, 2012 at 11:54 AM, Chladnis Heirs n...@chladnis-heirs.com wrote: Dear community, Now we all were occupied with admiring the fragments and the rare individuals that new epoch-making fall yielded; we studied the exterior, were amazed about the variety of different fusion crusts, took a glance on the interior by means of broken sides or crust-free fragments. Now it is highest time to subject Tissint to the other viewing habits we are used to - and here we are proud to present now the first masterly prepared slices: And what for slices! http://www.chladnis-heirs.com/specials/tissint.html In principle here could end our Special - in leaving you alone in your awe. Well worth it was, that we pushed away our twinge of conscience to slice up one of the scarce perfect individuals, any collector would rip his arm off for. Look, how we were rewarded. See those fantastically pastel green olivine crystals, which strongly remind us of those in NWA 5789. Take a closer look, you'll find even a few single ones, which seems almost to change from opaque to translucent. They are sitting in a very accentuated matrix-grid, which is in some ways similar to Shergotty or Zagami, though finer and on a smaller scale. And finally those dramatic and huge melt pockets and maskelynite blotches. With all historical respect for the four other observed Martian falls, Tissint is macroscopically the most spectacular and the most aesthetical among the observed falls. For sure. Masterly polished by Stefan's craftsmanship, completely surrounded by fusion crust, with at best only here and there naturally a small chip missing, are these those adorable specimens, which also in later decades you'll take in your hands, with a silent and almost triumphal blitheness, to have been once so wise, to have saved these specimen just in the days of the birth of this so famous meteorite. And if you were one of the few lucky ones, who were able to gather one of the few complete individuals, such a fullslice is almost a must to add. (And those who weren't - watch the endcut, a perfect alternative or contact us for still a superb complete individual). Enjoy! Stefan Martin Chladni's Heirs Munich - Berlin Fine Meteorites for Science Collectors http://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
Re: [meteorite-list] Special: AD: New Mars-Fall Tissint - Polished Fullslices!
Indeed! Great work! Regards, Michael D. Johnson http://www.rocksfromspace.org http://www.stonesfromthesky.com - Original Message - From: Graham Ensor graham.en...@gmail.com To: Chladnis Heirs n...@chladnis-heirs.com Cc: meteorite-list@meteoritecentral.com Sent: Thursday, January 26, 2012 3:05 PM Subject: Re: [meteorite-list] Special: AD: New Mars-Fall Tissint - Polished Fullslices! Beautiful meteorite in all waysnice work, Graham On Thu, Jan 26, 2012 at 11:54 AM, Chladnis Heirs n...@chladnis-heirs.com wrote: Dear community, Now we all were occupied with admiring the fragments and the rare individuals that new epoch-making fall yielded; we studied the exterior, were amazed about the variety of different fusion crusts, took a glance on the interior by means of broken sides or crust-free fragments. Now it is highest time to subject Tissint to the other viewing habits we are used to - and here we are proud to present now the first masterly prepared slices: And what for slices! http://www.chladnis-heirs.com/specials/tissint.html In principle here could end our Special - in leaving you alone in your awe. Well worth it was, that we pushed away our twinge of conscience to slice up one of the scarce perfect individuals, any collector would rip his arm off for. Look, how we were rewarded. See those fantastically pastel green olivine crystals, which strongly remind us of those in NWA 5789. Take a closer look, you'll find even a few single ones, which seems almost to change from opaque to translucent. They are sitting in a very accentuated matrix-grid, which is in some ways similar to Shergotty or Zagami, though finer and on a smaller scale. And finally those dramatic and huge melt pockets and maskelynite blotches. With all historical respect for the four other observed Martian falls, Tissint is macroscopically the most spectacular and the most aesthetical among the observed falls. For sure. Masterly polished by Stefan's craftsmanship, completely surrounded by fusion crust, with at best only here and there naturally a small chip missing, are these those adorable specimens, which also in later decades you'll take in your hands, with a silent and almost triumphal blitheness, to have been once so wise, to have saved these specimen just in the days of the birth of this so famous meteorite. And if you were one of the few lucky ones, who were able to gather one of the few complete individuals, such a fullslice is almost a must to add. (And those who weren't - watch the endcut, a perfect alternative or contact us for still a superb complete individual). Enjoy! Stefan Martin Chladni's Heirs Munich - Berlin Fine Meteorites for Science Collectors http://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
[meteorite-list] Etching solution
Hello all. I am going to perform my first etch, of a Sikhote-Alin slice with Nitol, but I was wondering if Isopropyl can be substituted for the Ethanol? Any advise would be apreciated. Thanks Craig __ 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] Unusual Trade!!?
Hi List. Throwing a bone out at all of you. Does anyone out there want to help me in that I am looking for a Canon EOS EF 50MM F/1.8 Mark I (metal mount) Lens that may just be laying around or collecting dust in your photographic bag doing nothing, that which is in great shape and works? Willing to trade for several rare historic specimens and or both meteorites and cash? Email me off list and see if we can reach a deal as I could desperately use the lens for piggy back astrophotography. Sincerely Don Merchant Founder-Cosmic Treasures Celestial Wonders www.ctreasurescwonders.com IMCA #0960 __ 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] Etching solution
Sure, just keep in mind when you make your nital that and look for the 99.99% pure alcohol that even concentrated nitric acid is 30% water (same as the low grade isopropanol from the supermarket). -Original Message- From: Craig Moody meteoritesno...@hotmail.ca To: MetList meteorite-list@meteoritecentral.com Sent: Thu, Jan 26, 2012 7:34 pm Subject: [meteorite-list] Etching solution Hello all. I am going to perform my first etch, of a Sikhote-Alin slice with Nitol, but I was wondering if Isopropyl can be substituted for the Ethanol? Any advise would be apreciated. Thanks Craig __ 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] Etching solution
Craig, Let me add (the message actually got away before being finished as I write piecemeal and then send) that as far as etching it works fine, but if you look at the series of alcohols, methyl (bp = 65 C), ethyl (bp = 78 C) and isoproply alcohol (bp = 83 C), methyl alcohol (methanol) is by far the safest until you get a lot of experience working with these under a hood. Ethyl nital is mildly flammable in and Isopropyl nital is pretty dangerous since if can blow up in certain conditions that aren't difficult to arrange. Nothing to do with the etching results which are left to trial and error, but rather the safety which I should have mentioned. While all the alcohols work fine, keep in mind two of the factors you are working with are miscibility/penetrant ability and vapor pressure. Vapor pressure you can estimate by boiling point - lower bp is a higher vp. The higher vp the quicker it will evaporate out, so methanol would seem to have the advantage, thought it might form some azeotropes and stay in longer, as could the rest without looking this up (no time at the moment). To the series of three common alcohols you could just add water bp = 100 and consider it almost as a continuim and play with the you like which will influence drying time among other important parameters. I use methanol and later rinse with ethanol (cheaper for me), which is the reverse of good drying practice I would think, but half of the time I just use the diluted acid at 2 - 3 N. Hope that was a better answer, sorry for not finishing the first kindest wishes Doug -Original Message- From: Craig Moody meteoritesno...@hotmail.ca To: mexicodoug mexicod...@aim.com Sent: Thu, Jan 26, 2012 9:42 pm Subject: RE: [meteorite-list] Etching solution Much appreciated Doug, Thank you! I have lots of 99% around. Craig __ 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] Etching solution
PS - if you don't have a hood or other exhaust, the methyl alcohol could also be dangerous becasue the liver breaks it down into toxins and you will inhale some of it. That's another reason why I use ethanol in the oven, and frankly much more important a reason than saving a few pennies ;-) You can consider the residence time of the toxins in your system to be as long as a week, so if your are doing etxching all day long,and are using methanol nital you definitely need a very well ventilated place, and methanol is sneaky worthy of a CSI episode of an innocent who done it since the syptoms and critical second hit can be stealth and barely naseaous for the first. I know you didn't ask about methyl alcohol, but its good to see the 4 common solcvent benefits/liabilities side by side, at least my take on it. Anyway, you can see why ethyl alcohol iis usually preferred. I just checkethe azeotrophes andisopropyl is only 2.3 C above ethanol mixtures so its ability to remove water would be very similar in the oven, the last thing to look up to decide theoretically approximating the penetrating ability as related to the surface tension of the alcohol (just a guess) what is the bestest alcohol would be to check the surface tension. I just did and all three alcohols are nearly 4 times that of water and within 5% o each other, so I would think that on penetrating ability they are probably all tied and would argue all factors considered ethanol is best since the worst you get is a standard hangover in standard use conditions, and to get a freak explosion from EtOH mixtures with acid is minimal compared to isopropyl. Ferric chloride of course doesn't have the toxicity not flammability, but it stains like heck and with proper respect for the reagents plus a little experience, like everything else the risks are minimized. That's another reason to start with dilute nitric which I highly recommend until you have the bugs worked out of the etching assembly line, ie, method you find best for your work. Good luck, Kindest wshes Doug. -Original Message- From: MexicoDoug mexicod...@aim.com To: meteoritesnorth meteoritesno...@hotmail.ca; Meteorite-list Meteorite-list@meteoritecentral.com Sent: Thu, Jan 26, 2012 10:30 pm Subject: Re: [meteorite-list] Etching solution Craig, Let me add (the message actually got away before being finished as I write piecemeal and then send) that as far as etching it works fine, but if you look at the series of alcohols, methyl (bp = 65 C), ethyl (bp = 78 C) and isoproply alcohol (bp = 83 C), methyl alcohol (methanol) is by far the safest until you get a lot of experience working with these under a hood. Ethyl nital is mildly flammable in and Isopropyl nital is pretty dangerous since if can blow up in certain conditions that aren't difficult to arrange. Nothing to do with the etching results which are left to trial and error, but rather the safety which I should have mentioned. While all the alcohols work fine, keep in mind two of the factors you are working with are miscibility/penetrant ability and vapor pressure. Vapor pressure you can estimate by boiling point - lower bp is a higher vp. The higher vp the quicker it will evaporate out, so methanol would seem to have the advantage, thought it might form some azeotropes and stay in longer, as could the rest without looking this up (no time at the moment). To the series of three common alcohols you could just add water bp = 100 and consider it almost as a continuim and play with the you like which will influence drying time among other important parameters. I use methanol and later rinse with ethanol (cheaper for me), which is the reverse of good drying practice I would think, but half of the time I just use the diluted acid at 2 - 3 N. Hope that was a better answer, sorry for not finishing the first kindest wishes Doug -Original Message- From: Craig Moody meteoritesno...@hotmail.ca To: mexicodoug mexicod...@aim.com Sent: Thu, Jan 26, 2012 9:42 pm Subject: RE: [meteorite-list] Etching solution Much appreciated Doug, Thank you! I have lots of 99% around. Craig __ 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] Etching solution
I don't know all of the details of the etching process, but a word of caution - mixing concentrated nitric acid with ethanol can result in an explosion and a fire. I've witnessed the results of the reaction when someone inadvertently mixed the two in a lab years ago. Mark Mark Grossman Meteorite Manuscripts - Original Message - From: MexicoDoug mexicod...@aim.com To: mexicod...@aim.com; meteoritesno...@hotmail.ca; Meteorite-list@meteoritecentral.com Sent: Thursday, January 26, 2012 11:23 PM Subject: Re: [meteorite-list] Etching solution PS - if you don't have a hood or other exhaust, the methyl alcohol could also be dangerous becasue the liver breaks it down into toxins and you will inhale some of it. That's another reason why I use ethanol in the oven, and frankly much more important a reason than saving a few pennies ;-) You can consider the residence time of the toxins in your system to be as long as a week, so if your are doing etxching all day long,and are using methanol nital you definitely need a very well ventilated place, and methanol is sneaky worthy of a CSI episode of an innocent who done it since the syptoms and critical second hit can be stealth and barely naseaous for the first. I know you didn't ask about methyl alcohol, but its good to see the 4 common solcvent benefits/liabilities side by side, at least my take on it. Anyway, you can see why ethyl alcohol iis usually preferred. I just checkethe azeotrophes andisopropyl is only 2.3 C above ethanol mixtures so its ability to remove water would be very similar in the oven, the last thing to look up to decide theoretically approximating the penetrating ability as related to the surface tension of the alcohol (just a guess) what is the bestest alcohol would be to check the surface tension. I just did and all three alcohols are nearly 4 times that of water and within 5% o each other, so I would think that on penetrating ability they are probably all tied and would argue all factors considered ethanol is best since the worst you get is a standard hangover in standard use conditions, and to get a freak explosion from EtOH mixtures with acid is minimal compared to isopropyl. Ferric chloride of course doesn't have the toxicity not flammability, but it stains like heck and with proper respect for the reagents plus a little experience, like everything else the risks are minimized. That's another reason to start with dilute nitric which I highly recommend until you have the bugs worked out of the etching assembly line, ie, method you find best for your work. Good luck, Kindest wshes Doug. -Original Message- From: MexicoDoug mexicod...@aim.com To: meteoritesnorth meteoritesno...@hotmail.ca; Meteorite-list Meteorite-list@meteoritecentral.com Sent: Thu, Jan 26, 2012 10:30 pm Subject: Re: [meteorite-list] Etching solution Craig, Let me add (the message actually got away before being finished as I write piecemeal and then send) that as far as etching it works fine, but if you look at the series of alcohols, methyl (bp = 65 C), ethyl (bp = 78 C) and isoproply alcohol (bp = 83 C), methyl alcohol (methanol) is by far the safest until you get a lot of experience working with these under a hood. Ethyl nital is mildly flammable in and Isopropyl nital is pretty dangerous since if can blow up in certain conditions that aren't difficult to arrange. Nothing to do with the etching results which are left to trial and error, but rather the safety which I should have mentioned. While all the alcohols work fine, keep in mind two of the factors you are working with are miscibility/penetrant ability and vapor pressure. Vapor pressure you can estimate by boiling point - lower bp is a higher vp. The higher vp the quicker it will evaporate out, so methanol would seem to have the advantage, thought it might form some azeotropes and stay in longer, as could the rest without looking this up (no time at the moment). To the series of three common alcohols you could just add water bp = 100 and consider it almost as a continuim and play with the you like which will influence drying time among other important parameters. I use methanol and later rinse with ethanol (cheaper for me), which is the reverse of good drying practice I would think, but half of the time I just use the diluted acid at 2 - 3 N. Hope that was a better answer, sorry for not finishing the first kindest wishes Doug -Original Message- From: Craig Moody meteoritesno...@hotmail.ca To: mexicodoug mexicod...@aim.com Sent: Thu, Jan 26, 2012 9:42 pm Subject: RE: [meteorite-list] Etching solution Much appreciated Doug, Thank you! I have lots of 99% around. Craig __ 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] Fw: Etching solution
Did a quick search on the internet. Read this tale from the Meteorite Association of Georgia regarding the hazards of mixing nitric acid and ethanol: http://www.meteoriteassociationofgeorgia.org/article-052007.htm. Mark Mark Grossman Meteorite Manuscripts - Original Message - From: Mark Grossman mar...@westnet.com To: mexicod...@aim.com; meteoritesno...@hotmail.ca; Meteorite-list@meteoritecentral.com Sent: Thursday, January 26, 2012 11:40 PM Subject: Re: [meteorite-list] Etching solution I don't know all of the details of the etching process, but a word of caution - mixing concentrated nitric acid with ethanol can result in an explosion and a fire. I've witnessed the results of the reaction when someone inadvertently mixed the two in a lab years ago. Mark Mark Grossman Meteorite Manuscripts - Original Message - From: MexicoDoug mexicod...@aim.com To: mexicod...@aim.com; meteoritesno...@hotmail.ca; Meteorite-list@meteoritecentral.com Sent: Thursday, January 26, 2012 11:23 PM Subject: Re: [meteorite-list] Etching solution PS - if you don't have a hood or other exhaust, the methyl alcohol could also be dangerous becasue the liver breaks it down into toxins and you will inhale some of it. That's another reason why I use ethanol in the oven, and frankly much more important a reason than saving a few pennies ;-) You can consider the residence time of the toxins in your system to be as long as a week, so if your are doing etxching all day long,and are using methanol nital you definitely need a very well ventilated place, and methanol is sneaky worthy of a CSI episode of an innocent who done it since the syptoms and critical second hit can be stealth and barely naseaous for the first. I know you didn't ask about methyl alcohol, but its good to see the 4 common solcvent benefits/liabilities side by side, at least my take on it. Anyway, you can see why ethyl alcohol iis usually preferred. I just checkethe azeotrophes andisopropyl is only 2.3 C above ethanol mixtures so its ability to remove water would be very similar in the oven, the last thing to look up to decide theoretically approximating the penetrating ability as related to the surface tension of the alcohol (just a guess) what is the bestest alcohol would be to check the surface tension. I just did and all three alcohols are nearly 4 times that of water and within 5% o each other, so I would think that on penetrating ability they are probably all tied and would argue all factors considered ethanol is best since the worst you get is a standard hangover in standard use conditions, and to get a freak explosion from EtOH mixtures with acid is minimal compared to isopropyl. Ferric chloride of course doesn't have the toxicity not flammability, but it stains like heck and with proper respect for the reagents plus a little experience, like everything else the risks are minimized. That's another reason to start with dilute nitric which I highly recommend until you have the bugs worked out of the etching assembly line, ie, method you find best for your work. Good luck, Kindest wshes Doug. -Original Message- From: MexicoDoug mexicod...@aim.com To: meteoritesnorth meteoritesno...@hotmail.ca; Meteorite-list Meteorite-list@meteoritecentral.com Sent: Thu, Jan 26, 2012 10:30 pm Subject: Re: [meteorite-list] Etching solution Craig, Let me add (the message actually got away before being finished as I write piecemeal and then send) that as far as etching it works fine, but if you look at the series of alcohols, methyl (bp = 65 C), ethyl (bp = 78 C) and isoproply alcohol (bp = 83 C), methyl alcohol (methanol) is by far the safest until you get a lot of experience working with these under a hood. Ethyl nital is mildly flammable in and Isopropyl nital is pretty dangerous since if can blow up in certain conditions that aren't difficult to arrange. Nothing to do with the etching results which are left to trial and error, but rather the safety which I should have mentioned. While all the alcohols work fine, keep in mind two of the factors you are working with are miscibility/penetrant ability and vapor pressure. Vapor pressure you can estimate by boiling point - lower bp is a higher vp. The higher vp the quicker it will evaporate out, so methanol would seem to have the advantage, thought it might form some azeotropes and stay in longer, as could the rest without looking this up (no time at the moment). To the series of three common alcohols you could just add water bp = 100 and consider it almost as a continuim and play with the you like which will influence drying time among other important parameters. I use methanol and later rinse with ethanol (cheaper for me), which is the reverse of good drying practice I would think, but half of the time I just use the diluted acid at 2 - 3 N. Hope that was a better answer, sorry for not finishing the first kindest wishes Doug -Original
[meteorite-list] Texas Meteor Fireball 26JAN2012
Dear List, A bolide was just seen over North Texas 26JAN2012. Details pending. Allsky camera operators please check your captures. http://lunarmeteoritehunters.blogspot.com/2012/01/breaking-news-mbiq-detects-meteor.html Dirk Ross...Tokyo __ 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] Stolen Campo Alert, Tucson Gem Show
Dear Listees: I am sorry to report that the window of my truck was smashed this evening (evidently with a sledgehammer or similar), in Tucson, and a bag containing three Campos was stolen along with various personal items. I think there is a good chance the thieves will attempt to sell these Campos at the gem show, so I'd like to ask all of you to please be on the lookout for them. They will be very easy to ID, as all three have natural holes, all have been cleaned and have the typical blackish color of treated Campos, and are of widely varying weights. I don't have exact weights, unfortunately, but here is a brief description: 1) Small individual, less than 100 grams, resembles a human face with a hole in the middle 2) Very distinctive triangular or knife blade-shaped iron with flat faces (no thumbprints) maybe about 800 grams, with a natural hole near the edge that makes it look very much like an alligator or dinosaur head. Stands up naturally with the hole near the top long edge. 3) Roundish individual, approx 1.5 kilos with smallish natural hole If you are approached by individuals trying to sell these three irons, please take appropriate action. I would suggest stating you'd like to buy them and ask if you can hold onto the pieces for a couple of hours to get them evaluated. Then call 911 and report stolen merchandise. I can be reached at 520 742 and i...@aerolite.org I am offering a substantial reward for any information leading to the arrest of the thieves. Thanks for reading, and for all of you currently in Tucson, enjoy the show and PLEASE be extra vigilant with your property. Theft is on the rise at the show and seems to get worse every year. I've heard of a lot of showroom thefts, but this is the first gem show-related vehicle break-in that I am aware of. Thanks for reading. Sincerely, Geoff N. www.aerolite.org www.meteoritemen.com www.meteorites.co __ 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] Stolen Campo Alert, Tucson Gem Show
Geoff: I'm sorry to hear this bad news, I hope you all the best in getting your meteorites returned. Greg S -Original Message- From: Meteorite Men Sent: 27 Jan 2012 06:00:24 GMT To: Meteorite-list@meteoritecentral.com Subject: [meteorite-list] Stolen Campo Alert, Tucson Gem Show Dear Listees: I am sorry to report that the window of my truck was smashed this evening (evidently with a sledgehammer or similar), in Tucson, and a bag containing three Campos was stolen along with various personal items. I think there is a good chance the thieves will attempt to sell these Campos at the gem show, so I'd like to ask all of you to please be on the lookout for them. They will be very easy to ID, as all three have natural holes, all have been cleaned and have the typical blackish color of treated Campos, and are of widely varying weights. I don't have exact weights, unfortunately, but here is a brief description: 1) Small individual, less than 100 grams, resembles a human face with a hole in the middle 2) Very distinctive triangular or knife blade-shaped iron with flat faces (no thumbprints) maybe about 800 grams, with a natural hole near the edge that makes it look very much like an alligator or dinosaur head. Stands up naturally with the hole near the top long edge. 3) Roundish individual, approx 1.5 kilos with smallish natural hole If you are approached by individuals trying to sell these three irons, please take appropriate action. I would suggest stating you'd like to buy them and ask if you can hold onto the pieces for a couple of hours to get them evaluated. Then call 911 and report stolen merchandise. I can be reached at 520 742 and i...@aerolite.org I am offering a substantial reward for any information leading to the arrest of the thieves. Thanks for reading, and for all of you currently in Tucson, enjoy the show and PLEASE be extra vigilant with your property. Theft is on the rise at the show and seems to get worse every year. I've heard of a lot of showroom thefts, but this is the first gem show-related vehicle break-in that I am aware of. Thanks for reading. Sincerely, Geoff N. www.aerolite.org www.meteoritemen.com www.meteorites.co __ 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] Fw: Etching solution
If I can add my experience to benefit others; many years ago, I used the instructions from the back of Norton's Rocks From Space book to do the nickel test on what later turned out to be a meteorwrong. Full face shield, haz/mat gloves protecting up to my elbows, plastic body bib, a dual charcoal filter vapour respirator, and an 8 kg bucket of sodium bicarbonate standing by. And also wore a toque (Canadian, eh!) I also made sure I had nothing behind me to trip me in case I had to make a hasty retreat. Being a cautious noob, I did the whole procedure outside in an 8'x10' shed, open windows on three sides, a double door wide open, and a big fan set up at a window to exhaust the interior of the shed to the outside. Not seeing results of the cherry red colour right away and since it was late, I turned the fan off and left the samples sitting in the solutions overnight . Next morning with disappointment I saw the negative results and disposed of everything safely. The next day after that I saw that everything metal in that shed started showing signs of corrosion, which continued until every metal surface within that shed was covered in rust! I'm assuming that the corrosive fumes had filled the shed during the calm night regardless of the open windows and door, and had fun. Think what that could do to your lungs! Now I make sure that when doing anything with any type of acid, air is being mechanically vented and I don't leave anything unattended. One further note of experience, when looking at meteorites under a stereoscope microscope, especially slices - even unpolished ones, if you wet them with isopropyl alcohol it will reveal maybe ten-fold the details. I was using an old eye-glass cleaner atomizing sprayer filled with the alcohol and give the specimen a squirt when it started to dry while I was examining it. I started waking up with severe headaches and it eventually dawned on me that I was poisoning myself by not venting the fumes away from me. Now I do my ooo-ing and ah-ing under a big ceiling fan, and have had no problems since. Cheers, Pete From: mar...@westnet.com To: mexicod...@aim.com; meteoritesno...@hotmail.ca; meteorite-list@meteoritecentral.com Date: Fri, 27 Jan 2012 00:32:10 -0500 Subject: [meteorite-list] Fw: Etching solution Did a quick search on the internet. Read this tale from the Meteorite Association of Georgia regarding the hazards of mixing nitric acid and ethanol: http://www.meteoriteassociationofgeorgia.org/article-052007.htm. Mark Mark Grossman Meteorite Manuscripts - Original Message - From: Mark Grossman mar...@westnet.com To: mexicod...@aim.com; meteoritesno...@hotmail.ca; Meteorite-list@meteoritecentral.com Sent: Thursday, January 26, 2012 11:40 PM Subject: Re: [meteorite-list] Etching solution I don't know all of the details of the etching process, but a word of caution - mixing concentrated nitric acid with ethanol can result in an explosion and a fire. I've witnessed the results of the reaction when someone inadvertently mixed the two in a lab years ago. Mark Mark Grossman Meteorite Manuscripts - Original Message - From: MexicoDoug mexicod...@aim.com To: mexicod...@aim.com; meteoritesno...@hotmail.ca; Meteorite-list@meteoritecentral.com Sent: Thursday, January 26, 2012 11:23 PM Subject: Re: [meteorite-list] Etching solution PS - if you don't have a hood or other exhaust, the methyl alcohol could also be dangerous becasue the liver breaks it down into toxins and you will inhale some of it. That's another reason why I use ethanol in the oven, and frankly much more important a reason than saving a few pennies ;-) You can consider the residence time of the toxins in your system to be as long as a week, so if your are doing etxching all day long,and are using methanol nital you definitely need a very well ventilated place, and methanol is sneaky worthy of a CSI episode of an innocent who done it since the syptoms and critical second hit can be stealth and barely naseaous for the first. I know you didn't ask about methyl alcohol, but its good to see the 4 common solcvent benefits/liabilities side by side, at least my take on it. Anyway, you can see why ethyl alcohol iis usually preferred. I just checkethe azeotrophes andisopropyl is only 2.3 C above ethanol mixtures so its ability to remove water would be very similar in the oven, the last thing to look up to decide theoretically approximating the penetrating ability as related to the surface tension of the alcohol (just a guess) what is the bestest alcohol would be to check the surface tension. I just did and all three alcohols are nearly 4 times that of water and within 5% o each other, so I would think that on penetrating ability they are probably all tied and would argue all factors considered
