[meteorite-list] Magnetic Meteorites
If someone with the equipment will cut me a one inch long, quarter inch square piece of either an Odessa, Nantan, Gibeon, Sikhote Alin, or Campo, then I shall retire to my laboratory and conduct the requisite experiments to answer, hopefully, the question at hand. Pete __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] magnetic meteorites
Hi List, I've read somewhere that it is possible for a meteorite to be magnetic. Reading that made me believe someone has discovered such a meteorite(s). Anyone out there on the List want to volunteer information and/or maybe some pictures (or a link to some pictures) of such an iron? Let me guess this first, mostly kamacite, right? If you have pictures, besides wanting to confirm my guess, I am interested in seeing the exterior, as in flow features and fusion crust. I would also be interested in knowing just how magnetic it is. Mike Murray __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] magnetic meteorites
Hello Mike, ~92% of all meteorites are magnetic; all irons, all stony irons, and nearly all stones are magnetic. The only meteorites that are not magnetic would be the HED's (some of these are slightly magentic), as well as Aubrites (though some of these contain iron as well), planetary meteorites (oftentimes *slightly* attracted to a neodymium magnet, though one should never poke such meteorites with a magnet), and Rumuruti chondrites (in this case, because most of the iron is contained within iron sulfide, and is thus non-magnetic). Depending on the stone, a few carbonaceous meteorites are lightly magnetic, but in general, they tend to be magnetic as well. Almost all meteorites are magnetic...I don't know where you heard otherwise, but...yeah. Regards, Jason On Dec 2, 2007 4:43 PM, Michael Murray [EMAIL PROTECTED] wrote: Hi List, I've read somewhere that it is possible for a meteorite to be magnetic. Reading that made me believe someone has discovered such a meteorite(s). Anyone out there on the List want to volunteer information and/or maybe some pictures (or a link to some pictures) of such an iron? Let me guess this first, mostly kamacite, right? If you have pictures, besides wanting to confirm my guess, I am interested in seeing the exterior, as in flow features and fusion crust. I would also be interested in knowing just how magnetic it is. Mike Murray __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] magnetic meteorites
Hi Michael, Magnetic can mean more than one thing: 1.of or pertaining to a magnet or magnetism. 2.having the properties of a magnet. 3.capable of being magnetized or attracted by a magnet. 4.pertaining to the magnetic field of the earth: the magnetic equator. 5.exerting a strong attractive power or charm: a magnetic personality. 6.noting or pertaining to various bearings and measurements as indicated by a magnetic compass: magnetic amplitude; magnetic course; magnetic meridian. The definition pertaining to meteorites is #3 not #2. Best, ken Michael Murray wrote: Hi List, I've read somewhere that it is possible for a meteorite to be magnetic. Reading that made me believe someone has discovered such a meteorite(s). Anyone out there on the List want to volunteer information and/or maybe some pictures (or a link to some pictures) of such an iron? Let me guess this first, mostly kamacite, right? If you have pictures, besides wanting to confirm my guess, I am interested in seeing the exterior, as in flow features and fusion crust. I would also be interested in knowing just how magnetic it is. Mike Murray __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] magnetic meteorites
Hi Jason, List Perhaps I used the wrong word when I wrote magnetic. What I was looking for was info on meteorites that are magnets. Sorry 'bout that Mike __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] magnetic meteorites
It is my understanding that most iron objects are susceptible to being magnitized, turned into magnets, if exposed to a strong magnetic field. So if a meteorite containing iron is exposed to strong ENOUGH magnets for long ENOUGH [note the qualifying capitalization], under the RIGHT circunstances it would not be impossible for SOME to become magnets. Jerry Flaherty - Original Message - From: Michael Murray [EMAIL PROTECTED] To: Meteorite-list@meteoritecentral.com Sent: Sunday, December 02, 2007 9:33 PM Subject: Re: [meteorite-list] magnetic meteorites Hi Jason, List Perhaps I used the wrong word when I wrote magnetic. What I was looking for was info on meteorites that are magnets. Sorry 'bout that Mike __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] magnetic meteorites
Hi Ken, Jerry, List, I have seen pieces of man-made iron and pieces of magnetite become slightly magnetic after being exposed to the supermagnet I use to hunt with. Although, I have not seen either become what I would call magnets afterwards. I have something a little different and am just trying to get it sorted. Thanks for the responses and helping me with that. I would still be interested in seeing a kamacite piece with flow features if anyone has pictures or a link they could point me to. Mike __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Magnetic Meteorites?
I am new to the list. I've been reading the list for about a month now. I just wanted to weigh in on the magnetic meteorite. I am a retired Electronics Engineer, so this is somewhat in my field of expertise. From what I know, when you say all meteorites are magnetic, what you mean is the meteorites are attracted to a magnet. Under the right conditions any meteorite containing Iron can be made magnetic by stroking the meteorite repeatedly in the same direction, or alternately, putting the meteorite in the center of a large coil of wire and passing a DC voltage thru the coil. I have just begun to collect meteorites Texas meteorites in the range of 1 to 3 grams. I bow to those with more knowledge about meteorite for the rest of the comments. I hope this helps. de Pete __ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Magnetic meteorites
En un mensaje con fecha 01/19/2005 6:49:39 PM Mexico Standard Time, [EMAIL PROTECTED] escribe: Have you seen a meteorite that attracts some other form of metal? Bob, They are definitely the most magnetic rocks in our universe. Hope this sheds light on some of the other forms you are after: most meteorites attract magnets, gold, silver, brass, copper, zinc, bills, and electronic moneys, credit cards, paypals, money burning holes in pockets, reporters, students, scientists, sky gazers, lovers (at Monze time!), birthday boys and girls, gift givers, Dads (and Moms), kids, folks, curiosity seekers, collectors, entrepreneurs, aventure seekers, hunters and providers, braggarts, dogs, German and Canadian cats, space fans, auctioneers, anomalous friends, gamblers, speculators, maniacs and fools alike. It is that universal attraction that makes them so special...Doug (typed oh so proudly from The United Mexican States). Bob Evans kindly quizzed: Sorry Little Dougie, But here in the states Magnetic means having magnetic properties . I think they're implying that the material attracts iron. Have you seen a meteorite that attracts some other form of metal? Please enlighten me, my friend south of the border BE __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Magnetic meteorites
With all due respect Steve You claimed that your new meteorite is very magnetic. That's about as annoying as the oriented - orientated debate. From what I understand Magnetic means having the properties of a magnet. Does your new meteorite attract Iron like a magnet? Probably not !! I see this used all of the time, so, am I missing something ? Is there some meteorite out there that I've never heard of that can attract Iron magnetically? Thanks Bob Evans - Original Message - From: Steve Arnold, Chicago!!! [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Wednesday, January 19, 2005 4:41 PM Subject: [meteorite-list] colorado iron meteorite?? Hi and good evening list.I just received my COLORADO IRON METEORITEfrom COLDZAP of ebay.The piece I got is 100.3 grams!It is very magnetic,with hints of fusion crust all over,with the bottom having a type of dirty varnish on it.I'll have a picture of it on my home page in a little while.I hope to sand a little of it off and see what is inside.Hopefully good news! steve arnold, chicago = Steve R.Arnold, Chicago, IL, 60120 I. M. C. A. MEMBER #6728 Illinois Meteorites website url http://stormbringer60120.tripod.com http://members.ebay.com/aboutme/illinoismeteorites/ __ Do you Yahoo!? The all-new My Yahoo! - Get yours free! http://my.yahoo.com __ 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
Re: [meteorite-list] Magnetic meteorites
Steve, you're fine. Generally with meteorites the more strongly magnetic the specimen the more iron metal. There are some many uses of the word magnetic in exactly the way you use it, in the Cambridge Encyclopedia of Meteorites that it sounds like you might be able to give Bob Evans some help on the concept. Saludos, Doug PS I have a meteorite that is a magnet. It's easy to make them from most magnetic metals like your new meteorite. Just store it with a strong magnet attached for a while and even just filing it can make a magnetic iron a permanent magnet right away. It'll be weaker thanthe original magnet, though. Mu Toluca got so magnetic it sticks to the refrigerator door. I was thinking sending a certain person one of these as a peace offering:) Other magnetic metals in the same sense as iron, are, nickel, cobalt and gadolinium...the actual term is ferromagnetic. Chromium and Maganese are actually antiferromagnetic. When someone says magnetic they are referring to any kind of magnetic property at all, not just the ability to sustain magnetic poles like a permanent magnet. The correct word to describe that is that the material is magnetized. Magnetized means it has the properties of a permanent magnet/ Magnetic means whatever the users wants remotely related to magnets, the metals they attract, of the fields they produce, etc. etc. Hope this clears it up until the next round... Congrats on the new acquisition! Saludos, Doug En un mensaje con fecha 01/19/2005 5:49:27 PM Mexico Standard Time, [EMAIL PROTECTED] escribe: With all due respect Steve You claimed that your new meteorite is very magnetic. That's about as annoying as the oriented - orientated debate. From what I understand Magnetic means having the properties of a magnet. Does your new meteorite attract Iron like a magnet? Probably not !! I see this used all of the time, so, am I missing something ? Is there some meteorite out there that I've never heard of that can attract Iron magnetically? Thanks Bob Evans __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Magnetic meteorites
Hi Doug, Steve allDoug I think you may have really hit on something- Refrigerator Meteor-Magnets! Every refrigerator should have a coupleYou can etch them and use them to hold up your shopping list, chore list, etc. I think we'll start offering them on ebay in the near future! Even better...Tom might be able to etch a picture of Granny on the meteorite and we could have etched-granny-meteorite-magnets for everyone's refrigerator! Cheers thanks for a great idea! -John [EMAIL PROTECTED] wrote: Steve, you're fine. Generally with meteorites the more strongly magnetic the specimen the more iron metal. There are some many uses of the word magnetic in exactly the way you use it, in the Cambridge Encyclopedia of Meteorites that it sounds like you might be able to give Bob Evans some help on the concept. Saludos, Doug PS I have a meteorite that is a magnet. It's easy to make them from most magnetic metals like your new meteorite. Just store it with a strong magnet attached for a while and even just filing it can make a magnetic iron a permanent magnet right away. It'll be weaker thanthe original magnet, though. Mu Toluca got so magnetic it sticks to the refrigerator door. I was thinking sending a certain person one of these as a peace offering:) Other magnetic metals in the same sense as iron, are, nickel, cobalt and gadolinium...the actual term is ferromagnetic. Chromium and Maganese are actually antiferromagnetic. When someone says magnetic they are referring to any kind of magnetic property at all, not just the ability to sustain magnetic poles like a permanent magnet. The correct word to describe that is that the material is magnetized. Magnetized means it has the properties of a permanent magnet/ Magnetic means whatever the users wants remotely related to magnets, the metals they attract, of the fields they produce, etc. etc. Hope this clears it up until the next round... Congrats on the new acquisition! Saludos, Doug En un mensaje con fecha 01/19/2005 5:49:27 PM Mexico Standard Time, [EMAIL PROTECTED] escribe: With all due respect Steve You claimed that your new meteorite is very magnetic. That's about as annoying as the oriented - orientated debate. From what I understand Magnetic means having the properties of a magnet. Does your new meteorite attract Iron like a magnet? Probably not !! I see this used all of the time, so, am I missing something ? Is there some meteorite out there that I've never heard of that can attract Iron magnetically? Thanks Bob Evans __ 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
Re: [meteorite-list] Magnetic meteorites
Sorry Little Dougie, But here in the states Magnetic means having magnetic properties . I think they're implying that the material attracts iron. Have you seen a meteorite that attracts some other form of metal? Please enlighten me, my friend south of the border BE - Original Message - From: [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Wednesday, January 19, 2005 6:15 PM Subject: Re: [meteorite-list] Magnetic meteorites Steve, you're fine. Generally with meteorites the more strongly magnetic the specimen the more iron metal. There are some many uses of the word magnetic in exactly the way you use it, in the Cambridge Encyclopedia of Meteorites that it sounds like you might be able to give Bob Evans some help on the concept. Saludos, Doug PS I have a meteorite that is a magnet. It's easy to make them from most magnetic metals like your new meteorite. Just store it with a strong magnet attached for a while and even just filing it can make a magnetic iron a permanent magnet right away. It'll be weaker thanthe original magnet, though. Mu Toluca got so magnetic it sticks to the refrigerator door. I was thinking sending a certain person one of these as a peace offering:) Other magnetic metals in the same sense as iron, are, nickel, cobalt and gadolinium...the actual term is ferromagnetic. Chromium and Maganese are actually antiferromagnetic. When someone says magnetic they are referring to any kind of magnetic property at all, not just the ability to sustain magnetic poles like a permanent magnet. The correct word to describe that is that the material is magnetized. Magnetized means it has the properties of a permanent magnet/ Magnetic means whatever the users wants remotely related to magnets, the metals they attract, of the fields they produce, etc. etc. Hope this clears it up until the next round... Congrats on the new acquisition! Saludos, Doug En un mensaje con fecha 01/19/2005 5:49:27 PM Mexico Standard Time, [EMAIL PROTECTED] escribe: With all due respect Steve You claimed that your new meteorite is very magnetic. That's about as annoying as the oriented - orientated debate. From what I understand Magnetic means having the properties of a magnet. Does your new meteorite attract Iron like a magnet? Probably not !! I see this used all of the time, so, am I missing something ? Is there some meteorite out there that I've never heard of that can attract Iron magnetically? Thanks Bob Evans __ 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
Re: [meteorite-list] Magnetic meteorites
Dear All, How about an etching of Proud Tom for a refrigerator magnet! Dave with the magnetic personality! John Birdsell wrote: Hi Doug, Steve allDoug I think you may have really hit on something- Refrigerator Meteor-Magnets! Every refrigerator should have a coupleYou can etch them and use them to hold up your shopping list, chore list, etc. I think we'll start offering them on ebay in the near future! Even better...Tom might be able to etch a picture of Granny on the meteorite and we could have etched-granny-meteorite-magnets for everyone's refrigerator! Cheers thanks for a great idea! -John [EMAIL PROTECTED] wrote: Steve, you're fine. Generally with meteorites the more strongly magnetic the specimen the more iron metal. There are some many uses of the word magnetic in exactly the way you use it, in the Cambridge Encyclopedia of Meteorites that it sounds like you might be able to give Bob Evans some help on the concept. Saludos, Doug PS I have a meteorite that is a magnet. It's easy to make them from most magnetic metals like your new meteorite. Just store it with a strong magnet attached for a while and even just filing it can make a magnetic iron a permanent magnet right away. It'll be weaker thanthe original magnet, though. Mu Toluca got so magnetic it sticks to the refrigerator door. I was thinking sending a certain person one of these as a peace offering:) Other magnetic metals in the same sense as iron, are, nickel, cobalt and gadolinium...the actual term is ferromagnetic. Chromium and Maganese are actually antiferromagnetic. When someone says magnetic they are referring to any kind of magnetic property at all, not just the ability to sustain magnetic poles like a permanent magnet. The correct word to describe that is that the material is magnetized. Magnetized means it has the properties of a permanent magnet/ Magnetic means whatever the users wants remotely related to magnets, the metals they attract, of the fields they produce, etc. etc. Hope this clears it up until the next round... Congrats on the new acquisition! Saludos, Doug En un mensaje con fecha 01/19/2005 5:49:27 PM Mexico Standard Time, [EMAIL PROTECTED] escribe: With all due respect Steve You claimed that your new meteorite is very magnetic. That's about as annoying as the oriented - orientated debate. From what I understand Magnetic means having the properties of a magnet. Does your new meteorite attract Iron like a magnet? Probably not !! I see this used all of the time, so, am I missing something ? Is there some meteorite out there that I've never heard of that can attract Iron magnetically? Thanks Bob Evans __ 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 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Magnetic meteorites
Steve, Bob, Doug et al, Webster's College Dictionary says: magnetic 1. of or pertaining to a magnet or magnetism. 2. having the properties of a magnet. 3. capable of being magnetized or attracted by a magnet. The list of definitions go on even further but I think #3 answers the question. Best, JKG At 05:49 PM 1/19/2005, Bob Evans wrote: Sorry Little Dougie, But here in the states Magnetic means having magnetic properties . I think they're implying that the material attracts iron. Have you seen a meteorite that attracts some other form of metal? Please enlighten me, my friend south of the border BE - Original Message - From: [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Wednesday, January 19, 2005 6:15 PM Subject: Re: [meteorite-list] Magnetic meteorites Steve, you're fine. Generally with meteorites the more strongly magnetic the specimen the more iron metal. There are some many uses of the word magnetic in exactly the way you use it, in the Cambridge Encyclopedia of Meteorites that it sounds like you might be able to give Bob Evans some help on the concept. Saludos, Doug PS I have a meteorite that is a magnet. It's easy to make them from most magnetic metals like your new meteorite. Just store it with a strong magnet attached for a while and even just filing it can make a magnetic iron a permanent magnet right away. It'll be weaker thanthe original magnet, though. Mu Toluca got so magnetic it sticks to the refrigerator door. I was thinking sending a certain person one of these as a peace offering:) Other magnetic metals in the same sense as iron, are, nickel, cobalt and gadolinium...the actual term is ferromagnetic. Chromium and Maganese are actually antiferromagnetic. When someone says magnetic they are referring to any kind of magnetic property at all, not just the ability to sustain magnetic poles like a permanent magnet. The correct word to describe that is that the material is magnetized. Magnetized means it has the properties of a permanent magnet/ Magnetic means whatever the users wants remotely related to magnets, the metals they attract, of the fields they produce, etc. etc. Hope this clears it up until the next round... Congrats on the new acquisition! Saludos, Doug En un mensaje con fecha 01/19/2005 5:49:27 PM Mexico Standard Time, [EMAIL PROTECTED] escribe: With all due respect Steve You claimed that your new meteorite is very magnetic. That's about as annoying as the oriented - orientated debate. From what I understand Magnetic means having the properties of a magnet. Does your new meteorite attract Iron like a magnet? Probably not !! I see this used all of the time, so, am I missing something ? Is there some meteorite out there that I've never heard of that can attract Iron magnetically? Thanks Bob Evans __ 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 __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Magnetic meteorites
Thanks John, I like to use the word magnetic for describing a meteorite only because I type about one word a minute and I don't think someone should have to say it is attracted to a magnet it just takes to long. We all know what is meant when a list member says magnetic. Magnetic, magnetic magnetic, see no one died from reading the word so we should let this topic rest forever! Thanks, Tom peregrineflier IMCA 6168 http://www.frontiernet.net/~peregrineflier/Peregrineflier.htm - Original Message - From: JKGwilliam [EMAIL PROTECTED] To: Bob Evans [EMAIL PROTECTED]; [EMAIL PROTECTED] Cc: meteorite-list@meteoritecentral.com Sent: Wednesday, January 19, 2005 6:56 PM Subject: Re: [meteorite-list] Magnetic meteorites Steve, Bob, Doug et al, Webster's College Dictionary says: magnetic 1. of or pertaining to a magnet or magnetism. 2. having the properties of a magnet. 3. capable of being magnetized or attracted by a magnet. The list of definitions go on even further but I think #3 answers the question. Best, JKG At 05:49 PM 1/19/2005, Bob Evans wrote: Sorry Little Dougie, But here in the states Magnetic means having magnetic properties . I think they're implying that the material attracts iron. Have you seen a meteorite that attracts some other form of metal? Please enlighten me, my friend south of the border BE - Original Message - From: [EMAIL PROTECTED] To: meteorite-list@meteoritecentral.com Sent: Wednesday, January 19, 2005 6:15 PM Subject: Re: [meteorite-list] Magnetic meteorites Steve, you're fine. Generally with meteorites the more strongly magnetic the specimen the more iron metal. There are some many uses of the word magnetic in exactly the way you use it, in the Cambridge Encyclopedia of Meteorites that it sounds like you might be able to give Bob Evans some help on the concept. Saludos, Doug PS I have a meteorite that is a magnet. It's easy to make them from most magnetic metals like your new meteorite. Just store it with a strong magnet attached for a while and even just filing it can make a magnetic iron a permanent magnet right away. It'll be weaker thanthe original magnet, though. Mu Toluca got so magnetic it sticks to the refrigerator door. I was thinking sending a certain person one of these as a peace offering:) Other magnetic metals in the same sense as iron, are, nickel, cobalt and gadolinium...the actual term is ferromagnetic. Chromium and Maganese are actually antiferromagnetic. When someone says magnetic they are referring to any kind of magnetic property at all, not just the ability to sustain magnetic poles like a permanent magnet. The correct word to describe that is that the material is magnetized. Magnetized means it has the properties of a permanent magnet/ Magnetic means whatever the users wants remotely related to magnets, the metals they attract, of the fields they produce, etc. etc. Hope this clears it up until the next round... Congrats on the new acquisition! Saludos, Doug En un mensaje con fecha 01/19/2005 5:49:27 PM Mexico Standard Time, [EMAIL PROTECTED] escribe: With all due respect Steve You claimed that your new meteorite is very magnetic. That's about as annoying as the oriented - orientated debate. From what I understand Magnetic means having the properties of a magnet. Does your new meteorite attract Iron like a magnet? Probably not !! I see this used all of the time, so, am I missing something ? Is there some meteorite out there that I've never heard of that can attract Iron magnetically? Thanks Bob Evans __ 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 __ 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
[meteorite-list] Magnetic Meteorites!
Dear Dave and Doug, Maybe they all saw The Magnetic Monster when they were kids. Anyone else remember that one? Dating myself... Chauncey __ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Magnetic Meteorites!
Dear Chauncey; I miss Bill Nye the science guy...now there was a magnetic personality! I am spending the rest of the afternoon going through my NWA collection to actually see how many will stick on the refrigerator door as true magnets would. ...as I return to line dancing with magnets in the forest of silent falling trees, ok Doug? Saloutosyoutoes Dave F. Chauncey Walden wrote: Dear Dave and Doug, Maybe they all saw The Magnetic Monster when they were kids. Anyone else remember that one? Dating myself... Chauncey __ 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
[meteorite-list] Magnetic Meteorites
http://physicsweb.org/article/news/6/11/8 Magnetic meteorites Belle Dume PhysicsWeb 13 November 2002 Physicists and geologists at Trinity College in Dublin have found new evidence for the existence of magnetism in carbon by examining a meteorite that crashed into the Arizona desert some 50,000 years ago. Michael Coey and colleagues examined fragments from the Canyon Diablo meteorite and found that only about two-thirds of the magnetization could be accounted for by the magnetic minerals present in the sample. This means, they say, that the rest of the magnetization is somehow associated with the carbon in the meteoritic graphite nodule (JMD Coey et al. 2002 Nature 420 156) The magnetic properties of carbon-60 compounds have intrigued physicists since they were first reported in 1991 and researchers have recently discovered weak magnetic behaviour in polymerised rhomohedral carbon-60. Ferromagnetism has previously been observed in other carbon-based ferromagnets, but only at very low temperatures. However, the weakness of the effect makes it difficult to determine the origins of the magnetism - it could be intrinsic or it might be caused by minute concentrations of iron-rich impurities in the samples. Coey and co-workers characterised the magnetism associated with the ferromagnetic phases in their samples using Mossbauer spectroscopy, chemical analysis and a combination of scanning electron microscopy and X-ray diffraction analysis. From the Mossbauer results, they determined the concentration of the ferromagnetic minerals in each of the graphitic samples and calculated their combined contribution to the magnetization. The observed magnetization, however, significantly exceeded the magnetization that was due to these magnetic phases. The researchers attribute this difference to the graphite. They calculate the average room temperature magnetization of carbon to be 23.1 Am2 kg-1, which corresponds to 0.05 Bohr magnetons per atom. By comparison the figure for iron is 2.2 Bohr magnetons per atom. The results raise the question of the origin of the ferromagnetism. It could be that meteoritic graphite differs from its terrestrial counterpart because of the way it was formed or changes it underwent when it landed on Earth. The shock of this impact could produce defects, which are known to increase the magnetic susceptibility of graphite. Another possibility is that the dispersed nanocrystalline ferromagnetic phases induce a magnetic moment in the graphite. The researchers suggest a magnetic proximity effect induced at the border between the graphite and the magnetic materials as a possible explanation. Whatever its origin, the implications of ferromagnetic carbon are likely to be far-reaching. This material could, for example, be used as a high-temperature ferromagnetic semiconductor or in spintronic applications. __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
