[meteorite-list] Moon rocks
Looks pretty bogus to me: http://www.ebay.com/itm/Moon-rock-Apollo11-/190661007344?pt=LH_DefaultDomain_0&hash=item2c644817f0 He relists it every week, lowering the starting bid by $100,000. I don't see how eBay can allow this. Phil Whitmer Joshua Tree Earth & Space Museum __ 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] Moon rocks
Lol that's it! Sent from T-Mobile G2 with Google "Sterling K. Webb" wrote: >Dan, List, > >THIS $4.7 million Moon Rock? >http://www.collectspace.com/ubb/Forum27/HTML/003260.html > >As they point out, that $4.7 million is just an >opening bid; there is a reserve. But, but on the >bright side... Free Shipping! > >I suppose it would be more or less legal to sell >someone a Moon Rock on eBay and when the >auction was complete, tell the buyer that his >purchase was ON the Moon and all he had to >do was to arrange his own shipping or just go >pick it up himself... > > >Sterling K. Webb >-- >- Original Message - >From: "D Miller" >To: "Sterling K. Webb" ; > >Sent: Saturday, April 14, 2012 5:40 PM >Subject: Re: [meteorite-list] Moon rocks > > >> Did anyone see the auction on EBay last week for a Moon rock for 4.7 >> mil. I tried to post here twice. He said he had papers to own I also >> heard men in suits from NASA may show up at your doorstep if you try >> to sell them. >> >> Sent from T-Mobile G2 with Google >> >> "Sterling K. Webb" wrote: >> >>>Hi, Dan, List, >>> >>>"Moon Rocks," meaning pieces of the Moon returned >>>by the space program, are the property of the Nation, >>>which paid about 25 billion 1970 dollars for them. In >>>practical terms, they are "owned" by the government >>>of the United States. No individuals "own" them. But >>>samples of lunar material are loaned to researchers on >>>application and justification for the research proposed >>>and are returned when it is over (unless the testing is >>>destructive, in which case they must be accounted for). >>> >>>"Moon Rocks," in the sense of rocks from the Moon >>>that were brought to Earth by other means than >>>government effort, that is, meteorites, can be owned >>>by anyone willing to pay the price to own them. >>> >>> >>>Sterling K. Webb >>>-- >>>- Original Message - >>>From: "D Miller" >>>To: >>>Sent: Saturday, April 14, 2012 2:18 PM >>>Subject: [meteorite-list] Moon rocks >>> >>> Can someone please tell me what the government policy is on obtaining moon rocks? I understand that only selected individuals related to the space program are allowed to own them. Dan Miller __ 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] Moon rocks
Dan, List, THIS $4.7 million Moon Rock? http://www.collectspace.com/ubb/Forum27/HTML/003260.html As they point out, that $4.7 million is just an opening bid; there is a reserve. But, but on the bright side... Free Shipping! I suppose it would be more or less legal to sell someone a Moon Rock on eBay and when the auction was complete, tell the buyer that his purchase was ON the Moon and all he had to do was to arrange his own shipping or just go pick it up himself... Sterling K. Webb -- - Original Message - From: "D Miller" To: "Sterling K. Webb" ; Sent: Saturday, April 14, 2012 5:40 PM Subject: Re: [meteorite-list] Moon rocks Did anyone see the auction on EBay last week for a Moon rock for 4.7 mil. I tried to post here twice. He said he had papers to own I also heard men in suits from NASA may show up at your doorstep if you try to sell them. Sent from T-Mobile G2 with Google "Sterling K. Webb" wrote: Hi, Dan, List, "Moon Rocks," meaning pieces of the Moon returned by the space program, are the property of the Nation, which paid about 25 billion 1970 dollars for them. In practical terms, they are "owned" by the government of the United States. No individuals "own" them. But samples of lunar material are loaned to researchers on application and justification for the research proposed and are returned when it is over (unless the testing is destructive, in which case they must be accounted for). "Moon Rocks," in the sense of rocks from the Moon that were brought to Earth by other means than government effort, that is, meteorites, can be owned by anyone willing to pay the price to own them. Sterling K. Webb -- - Original Message - From: "D Miller" To: Sent: Saturday, April 14, 2012 2:18 PM Subject: [meteorite-list] Moon rocks Can someone please tell me what the government policy is on obtaining moon rocks? I understand that only selected individuals related to the space program are allowed to own them. Dan Miller __ 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] SLICE WHOLE METEORITES
Hello List, Who out there in this great big USA cuts and polishes whole meteorites? Thanks Frank & Tricia Carroll Houston, TX __ 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] Moon rocks
Did anyone see the auction on EBay last week for a Moon rock for 4.7 mil. I tried to post here twice. He said he had papers to own I also heard men in suits from NASA may show up at your doorstep if you try to sell them. Sent from T-Mobile G2 with Google "Sterling K. Webb" wrote: >Hi, Dan, List, > >"Moon Rocks," meaning pieces of the Moon returned >by the space program, are the property of the Nation, >which paid about 25 billion 1970 dollars for them. In >practical terms, they are "owned" by the government >of the United States. No individuals "own" them. But >samples of lunar material are loaned to researchers on >application and justification for the research proposed >and are returned when it is over (unless the testing is >destructive, in which case they must be accounted for). > >"Moon Rocks," in the sense of rocks from the Moon >that were brought to Earth by other means than >government effort, that is, meteorites, can be owned >by anyone willing to pay the price to own them. > > >Sterling K. Webb >-- >- Original Message - >From: "D Miller" >To: >Sent: Saturday, April 14, 2012 2:18 PM >Subject: [meteorite-list] Moon rocks > > >> Can someone please tell me what the government policy is on obtaining >> moon rocks? I understand that only selected individuals related to the >> space program are allowed to own them. Dan Miller >> __ >> >> 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] Moon rocks
Hi, Dan, List, "Moon Rocks," meaning pieces of the Moon returned by the space program, are the property of the Nation, which paid about 25 billion 1970 dollars for them. In practical terms, they are "owned" by the government of the United States. No individuals "own" them. But samples of lunar material are loaned to researchers on application and justification for the research proposed and are returned when it is over (unless the testing is destructive, in which case they must be accounted for). "Moon Rocks," in the sense of rocks from the Moon that were brought to Earth by other means than government effort, that is, meteorites, can be owned by anyone willing to pay the price to own them. Sterling K. Webb -- - Original Message - From: "D Miller" To: Sent: Saturday, April 14, 2012 2:18 PM Subject: [meteorite-list] Moon rocks Can someone please tell me what the government policy is on obtaining moon rocks? I understand that only selected individuals related to the space program are allowed to own them. Dan Miller __ 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] Moon rocks
Can someone please tell me what the government policy is on obtaining moon rocks? I understand that only selected individuals related to the space program are allowed to own them. Dan Miller __ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] "Meteor Counter" for Lyrids
If you get 20 Lyrids per hour, you are doing great...but I think realistically you should expect something like 10 to 15/hour at the highest hour. Good luck and all... GeoZay In a message dated 4/14/2012 11:48:06 A.M. Pacific Daylight Time, abelcomp...@cox.net writes: I plan to use my newly downloaded "Meteor Counter" app to count and rate the Lyrids, which should display a modest 20 meteors an hour...but ya never know!! __ 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] AD: Murray, LA002 Mars Meteorite, Weston, Hambleton, New Concord & more ending on eBay soon!
Hello Listers, Thank you for taking a look at my post of meteorites I have for sale on eBay. Here is your chance to own some rare and historic meteorites. Please take a look and if you have any questions or OFFERS please email me and I’ll get back with you. Also if you are looking for bigger/smaller meteorites, let me know too. A meteorite is a meteorite, but a meteorite with history and a legacy, will always add aura to your meteorite collection and value. eBay store http://www.ebay.com/sch/ph0t0phl0w/m.html? Featured Auctions LOS ANGELES 002 Martian/Mars meteorite 2nd USA Mars find http://www.ebay.com/itm/261001441781?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649 WESTON - 1st USA meteorite, fell in 1807- RARE! http://www.ebay.com/itm/251038545209?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649 HAMBLETON meteorite 2005 UK Pallasite - Rarely sold on eBay. http://www.ebay.com/itm/261001440096?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649 NWA 2999 rare Angrite meteorite suggested from MERCURY! http://www.ebay.com/itm/251038546189?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649 SYLACAUGA meteorite Mrs Hodge meteorite strike - USA http://www.ebay.com/itm/260902947664?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649 Shawn Alan IMCA 1633 eBay Store http://www.ebay.com/sch/ph0t0phl0w/m.html? http://www.meteoritefalls.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
[meteorite-list] "Meteor Counter" for Lyrids
I'm planning to go north out of Phoenix to observe and photograph the Lyrid Meteor Shower next Saturday night. Our clear skies and dark, open wilderness are spectacular for watching the show... I plan to use my newly downloaded "Meteor Counter" app to count and rate the Lyrids, which should display a modest 20 meteors an hour...but ya never know!! One can rate brightness while counting, as the screen shows a "piano keyboard" approach to magnitudes to be quickly tallied...you can audio record verbal comments like "Wow"! Sky conditions are first entered, your level of skill, what are the dimmest stars you can see...but also of value to me is a meteor "News" section and an event calendar. So critical data is captured for each meteor - time, magnitude, your long/lat and optional verbal annotations...then it purports to send the information to "NASA researchers for analysis"... Of course, in the dark I find it harder to find my apps with both hands. Cheers! Jonathan __ 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] illinois fireball
Hi Steve, I was not really impressed with what I saw from the video. It did not appear to me as being a real dropper of rocks! Nice flight, however! Jim Jim Wooddell http://k7wfr.us - Original Message - From: "steve arnold" To: "meteorite-list" Sent: Saturday, April 14, 2012 8:39 AM Subject: [meteorite-list] illinois fireball Hi again list. Had anyone seen the illinois fireball that went by the other day? I saw the video. It looked spectacular..I wish I could have seen it from where I live. Alot of them are showing up these days,but it seems nothing is falling from them.As far as we know.The said that the illinois one was about the size of a beach ball. It shook people up when they saw it.They just do not understand what is happening,while we do and know what to look for when something does drop from space.Have a great day all. -- 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 __ 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] 100th Anniversary Holbrook Hunt - Important Message
Good Morning Holbrook meteorite hunting enthusiasts, I've been prolonging this email as long as I could - I was hoping things would change -but I can wait no longer. I am writing to inform you that do to commitments beyond my control I WILL NOT be able to make it to this years gathering. This is unfortunate as there will only be one 100 year anniversary. However, I have some really exciting things happening regarding meteorites and unfortunately, there is only one of me and I can NOT be at two places at once. This being said, I know that lots of people will still show up and if there is anyone out there that would like to step in and lead an organized event please feel free to do so. I'm sorry for any inconvenience this may have caused -- Rock On! Ruben Garcia Website: www.MrMeteorite.com Articles: www.meteorite.com/blog/ Videos: www.youtube.com/profile?user=meteorfright#p/u __ 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] OT: For the Geologists and Math Wizards!
Sure Doug, no problem. In fact, I will get in my Leer and fly it over to you! Ahahahaha! At this point I have decided to take up drinking and well, the piece is for sale as is. I posted a link of odd ball pictures of it as part of when I was testing it the other day. The album is all out of order, but my procedure, I feel, was good. This yellow stuff is getting to really cut into my meteorite activities. Note that in that day I found the gold, I also found a 480 gram meteorite! So in any case I had a really good day! And everyone there scored meteorites that day...so it was a good hunt! Jim - Original Message - From: "MexicoDoug" To: ; Sent: Saturday, April 14, 2012 9:25 AM Subject: Re: [meteorite-list] OT: For the Geologists and Math Wizards! Hey Jim, Gold, huh? Break of a quarter sized piece and send it to me. I don't return samples though because of the million I receive every day ;-) __ 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] OT: For the Geologists and Math Wizards!
Hey Jim, Gold, huh? Break of a quarter sized piece and send it to me. I don't return samples though because of the million I receive every day ;-) Kidding aside, I guess there are nifty formulas floating around that make assumptions on the matrix composition and that you've long since figured out that your rock doesn't fi the composition assumptions. If you have to know and that is more important than the whole specimen as a collectible or memento, ah the meteorite conflict rears its ugly head - I have to cut it to know what it is... My thought would be make a nice slice right down the middle to make two matching halves you can polish for aesthetics. Look at it for what that tells you as to the gold aggregation in it. Maybe save the cutting dust to check for gold content of thar. Then, check the density of each half to see if they agree. If they don't that will be a clue that something's up with the rock. Or you could just keep it as is to enjoy and imagine it as you wish! Anyway good luck ;-0 -doug -Original Message- From: Jim Wooddell To: meteorite-list Sent: Sat, Apr 14, 2012 11:28 am Subject: Re: [meteorite-list] OT: For the Geologists and Math Wizards! Hi Doug and all! Thanks for the answers. My thought was, prior to posting the questions here, that you could not have a calculation that would result in a density less than the less dense material, if the formula was correct where you have known densities of two specific minerals. To add to that here, with melting or morphing or whatever, I contend you could not have a calculation that would result in a lower density than any of the known densities of any known minerals or mixtures there of. However, if there are unknowns, then I do see where is it very possible where it would totally hose the results. I stated that in another forum and then thought about it for a while and thought, "Oh Shxx, I had better ask people way more knowledgeable than I". I put the OT in the subject line cause it may or may not relate to meteoritesI just knew some great minds are on this list. Specifically, I have a 65g rock with a lot of gold in it. While trying to determine the percentage of gold in it, this particular rock is breaking all the rules of engagement...to the point I am about ready to take a hammer to it and simply do it the old fashion way with mercuryexcept I don't have any mercury! That would be the part that is totally off topic for this list...except I found the gold when meteorite hunting! Using some of these wiz bang gold formulas (found on gold forums) I am coming up with negative numbers and one with minus 130% gold! I do not know how on earth I could be off by that amount using any of the areas known minerals or combinations of. Driving me nuts! It is such an awesome specimen, I hate to take a hammer to it...but two days of number crunching and testing is not "panning" out. Jim - Original Message - From: "MexicoDoug" To: ; Sent: Saturday, April 14, 2012 7:42 AM Subject: Re: [meteorite-list] OT: For the Geologists and Math Wizards! Jim, In a practical sense, this is quite possible since there are more possibilities, where your question could be taken as too ambiguous. Specifics - what are you really after? I'm thinking if this relates to meteorites you might have some concretions in mind as well, or perhaps melting and there are rarely "just" two minerals present in nature. When I mixed the concrete to fill the hole in the driveway, the hydration (a chemical modification) causes a structural change as well which contributes to a volume change, and it was certainly more slurry than the sum of the cement and sand, to adjust for the water. Some hydrations are reversible and others aren't. In nature for the organized mind, things usually go to hell in a handbasket since it is usually an open, complex system where everything and then some goes. If you like math, some engineers probably are very concerned about shrinkage or expansion of concretions for the times we drive over bridges, etc: maybe this gives further insight, I googled blindly: http://www.byg.dtu.dk/upload/institutter/byg/nyheder/trb-06-1571-as%20submitted%20final.pdf If two minerals are melted together, it is quite possible they will form a new crystal or amorphous structure, perhaps not even a clear chemical modification, but rather just reordering on a molecular scale that don't result in voids, but do result in a new density without adding gases, etc. I guess it might be a new mineral, but I'm not sure I know the precise definition of a rock or mineral so I'd think of it this way. Kindest wishes Doug -Original Message- From: Chris Peterson To: meteorite-list Sent: Sat, Apr 14, 2012 2:08 am Subject: Re: [meteorite-list] OT: For the Geologists and Math Wizards! If the two combine as some sort of conglomerate (like a breccia), and the combina
[meteorite-list] illinois fireball
Hi again list. Had anyone seen the illinois fireball that went by the other day? I saw the video. It looked spectacular..I wish I could have seen it from where I live. Alot of them are showing up these days,but it seems nothing is falling from them.As far as we know.The said that the illinois one was about the size of a beach ball. It shook people up when they saw it.They just do not understand what is happening,while we do and know what to look for when something does drop from space.Have a great day all. -- 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
Re: [meteorite-list] OT: For the Geologists and Math Wizards!
Hi Doug and all! Thanks for the answers. My thought was, prior to posting the questions here, that you could not have a calculation that would result in a density less than the less dense material, if the formula was correct where you have known densities of two specific minerals. To add to that here, with melting or morphing or whatever, I contend you could not have a calculation that would result in a lower density than any of the known densities of any known minerals or mixtures there of. However, if there are unknowns, then I do see where is it very possible where it would totally hose the results. I stated that in another forum and then thought about it for a while and thought, "Oh Shxx, I had better ask people way more knowledgeable than I". I put the OT in the subject line cause it may or may not relate to meteoritesI just knew some great minds are on this list. Specifically, I have a 65g rock with a lot of gold in it. While trying to determine the percentage of gold in it, this particular rock is breaking all the rules of engagement...to the point I am about ready to take a hammer to it and simply do it the old fashion way with mercuryexcept I don't have any mercury! That would be the part that is totally off topic for this list...except I found the gold when meteorite hunting! Using some of these wiz bang gold formulas (found on gold forums) I am coming up with negative numbers and one with minus 130% gold! I do not know how on earth I could be off by that amount using any of the areas known minerals or combinations of. Driving me nuts! It is such an awesome specimen, I hate to take a hammer to it...but two days of number crunching and testing is not "panning" out. Jim - Original Message - From: "MexicoDoug" To: ; Sent: Saturday, April 14, 2012 7:42 AM Subject: Re: [meteorite-list] OT: For the Geologists and Math Wizards! Jim, In a practical sense, this is quite possible since there are more possibilities, where your question could be taken as too ambiguous. Specifics - what are you really after? I'm thinking if this relates to meteorites you might have some concretions in mind as well, or perhaps melting and there are rarely "just" two minerals present in nature. When I mixed the concrete to fill the hole in the driveway, the hydration (a chemical modification) causes a structural change as well which contributes to a volume change, and it was certainly more slurry than the sum of the cement and sand, to adjust for the water. Some hydrations are reversible and others aren't. In nature for the organized mind, things usually go to hell in a handbasket since it is usually an open, complex system where everything and then some goes. If you like math, some engineers probably are very concerned about shrinkage or expansion of concretions for the times we drive over bridges, etc: maybe this gives further insight, I googled blindly: http://www.byg.dtu.dk/upload/institutter/byg/nyheder/trb-06-1571-as%20submitted%20final.pdf If two minerals are melted together, it is quite possible they will form a new crystal or amorphous structure, perhaps not even a clear chemical modification, but rather just reordering on a molecular scale that don't result in voids, but do result in a new density without adding gases, etc. I guess it might be a new mineral, but I'm not sure I know the precise definition of a rock or mineral so I'd think of it this way. Kindest wishes Doug -Original Message- From: Chris Peterson To: meteorite-list Sent: Sat, Apr 14, 2012 2:08 am Subject: Re: [meteorite-list] OT: For the Geologists and Math Wizards! If the two combine as some sort of conglomerate (like a breccia), and the combination doesn't result in voids, then the bulk density can't be lower than the density of the lowest density material. But if the two combine chemically, resulting in an alloy or in the formation of different minerals, certainly the bulk density could be lower than either of the constituents (because you could have an increase in volume). Chris *** Chris L Peterson Cloudbait Observatory http://www.cloudbait.com On 4/13/2012 9:04 PM, Jim Wooddell wrote: Hi all! I have a question that relates to meteorites...sort of. If I have two minerals that are combined that have two different densities, could the bulk density ever be lower the density of the mineral with the lowest density? Examples (to make it easy) Mineral 1 = 3g/cc Mineral 2 = 15g/cc IOWs could I ever have a density lower than 3g/cc??? If yes, can I please see the math? Thanks Jim __ 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.meteorite
Re: [meteorite-list] OT: For the Geologists and Math Wizards!
Jim, In a practical sense, this is quite possible since there are more possibilities, where your question could be taken as too ambiguous. Specifics - what are you really after? I'm thinking if this relates to meteorites you might have some concretions in mind as well, or perhaps melting and there are rarely "just" two minerals present in nature. When I mixed the concrete to fill the hole in the driveway, the hydration (a chemical modification) causes a structural change as well which contributes to a volume change, and it was certainly more slurry than the sum of the cement and sand, to adjust for the water. Some hydrations are reversible and others aren't. In nature for the organized mind, things usually go to hell in a handbasket since it is usually an open, complex system where everything and then some goes. If you like math, some engineers probably are very concerned about shrinkage or expansion of concretions for the times we drive over bridges, etc: maybe this gives further insight, I googled blindly: http://www.byg.dtu.dk/upload/institutter/byg/nyheder/trb-06-1571-as%20submitted%20final.pdf If two minerals are melted together, it is quite possible they will form a new crystal or amorphous structure, perhaps not even a clear chemical modification, but rather just reordering on a molecular scale that don't result in voids, but do result in a new density without adding gases, etc. I guess it might be a new mineral, but I'm not sure I know the precise definition of a rock or mineral so I'd think of it this way. Kindest wishes Doug -Original Message- From: Chris Peterson To: meteorite-list Sent: Sat, Apr 14, 2012 2:08 am Subject: Re: [meteorite-list] OT: For the Geologists and Math Wizards! If the two combine as some sort of conglomerate (like a breccia), and the combination doesn't result in voids, then the bulk density can't be lower than the density of the lowest density material. But if the two combine chemically, resulting in an alloy or in the formation of different minerals, certainly the bulk density could be lower than either of the constituents (because you could have an increase in volume). Chris *** Chris L Peterson Cloudbait Observatory http://www.cloudbait.com On 4/13/2012 9:04 PM, Jim Wooddell wrote: Hi all! I have a question that relates to meteorites...sort of. If I have two minerals that are combined that have two different densities, could the bulk density ever be lower the density of the mineral with the lowest density? Examples (to make it easy) Mineral 1 = 3g/cc Mineral 2 = 15g/cc IOWs could I ever have a density lower than 3g/cc??? If yes, can I please see the math? Thanks Jim __ 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] Meteorite Picture of the Day
Today's Meteorite Picture of the Day: Neuschwanstein Contributed by: Dieter Heinlein 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