Re: [meteorite-list] Odd Rock - Is it...?? Pyrite Plus
[EMAIL PROTECTED] wrote: http://www.geocities.com/sstelenes/rocks.html The above link is a page with three photos and a description of an odd stone from Mexico. Welcome to the list Doug. Thanks for posting the photos and providing size data. The gunmetal gray would ordinarily suggest Galena an ore of lead which weathers to a white ashy luster. However, the crystal habit doesn't match. It is not Galena (Pb lead) or, Fluorite(Ca F), nor is it a silicate(Si O). My impression is that it is an Iron Sulfide in the Pyrite class(Fe S)-- there are several variants. We normally think of Pyrite as coming in cubes but when it is extensively twinned and intergrown like this specimen, it can look like it has triangular crystal faces. When you truncate( chop off) the corner of a cube it forms a triangle. Otherwise-- but unlikely, this could be a psuedomorph. That is-- another mineral replaces an original crystallized mineral after the pattern of the original form. In fact on some of the faces I see a hint of Hematite which is an Iron Oxide.The reverse appears to be mineralized with Hematite and Limonite(yellow colored) which is is a hydrated Iron oxide. Limonite is an amorphous catch-all mineral name for the residue left from decomposition of other Iron minerals. All considered, I believe this is a slightly weathered iron pyrite crystal cluster, aka Fools Gold. It doesn't have the normal brassy pyrite color because of the Hematite coating. Not uninteresting but, not a meteorite as you already know. Tis another case of anything strange must be a meteorite and is a common meteorwrong theme. Regards, Elton __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Hey, I am an idiot!!!!!
Tom aka James Knudson wrote: Not having a saw, and even then I would not want to cut it, but anyways, the only place I could make a window with what I have is on that flat surface! I did it, and regret it now! Thanks, Tom You can purchase a 4 inch electric tile saw from a tool discount house for under $50. Perhaps that is ideal for the windowing small stones. Elton __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] eBay ads-discussion
A gentle comment here... I think the purpose of the ebay Meteorites group is for people interested in ebay auctions to have a single place to consolidate all the announcements and to ease the traffic off this list. I don't quiet see the reason for using both that list and the meteorite central list but many do so. I see a creep back towards tripple and quadruple postings across the several lists and the notices are getting back to almost daily anouncements for the same auctions. I ask all sellers to do some soul searching and see if the frequency of announcements and the posting of them here on the meteorite central list is really in your and potential buyer's interests. You'll have to decide that for yourself. I am not objecting, per se, just an observation that the ads traffic is perhaps rising above the comfort level on this lis again. I thought I had most sales ads on this list filtered but some are slipping through. I personally prefer to view potential acquisitions on the ebay [EMAIL PROTECTED] groups. IF you ARE going to post auctions here...PLEASE use the standard AD in the subject line.(not Ebay or auction or sale etc). Thanks!, Elton __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Weight VS Size ? Specific Gravity values?
Tom aka James Knudson wrote: Hello List, as some of you know, I am putting together a mini individual collection. I have a 2.8 gram NWA (L6) and a 2.72 gram Allende. The Allende is huge compared to the NWA. Is that an metal content issue? By the way, I am looking for more nice individuals this size, and irons around 4 grams, if you have any for sell let me know off list. : ) Thanks, Tom Peregrineflier Yea, that's right, The proudest member of the IMCA # 6168 Tom brought up something I have been trying to assemble or Bum off of another researcher on the list. Does anyone have a chart of average density/SG and ranges for the meteortite classes? And Yes Tom this is largely the metal differences both free metal and metalic compounds between the carbonaceous class and other chondrites. Elton __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Puturano
Timothy Finkle wrote: Hi List, snip Geologicaly speaking was this area volcanic in prehistoric times? To my recollection nothing within 700-900 miles of Dallas is volcanic. Until the quaternary it was under salt water in theGulf of Iowa Ok maybe a wee bit of a kimberlite pipe in Arkansas, some alleged pipes on the UP of Michigan-- But nothing in mid North America in the past 600-700 million. Lengthy caveat: I believe I told some folks from Wisconsin there weren't any volcanoes near there but, some recent rock hound reports have claimed to have found Lava. Be it remembered that the northern Midwest USA and Southern Canada were scraped flat several times over, any above ground basal/ash was sent south. Any ash was mixed in with the prairie loess and could have been mistaken for ash from the Great Western Basin such as was deposited in the Dakota Badlands. So the object in question is not likely native to the FWD Metroplex. You asked any suggestions? have a lab look at it at this point. One final caution.. To my further recall, the nickel test kits widely available via ebay can render a false positive in the presence of iron so its utility in testing for meteorities is possibly unreliable Elton __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Send Your Name to a Comet-OT
ASTRO NEWS BRIEFS Send Your Name to a Comet In December 2004, NASA plans to launch the Deep Impact spacecraft and send it to Comet Tempel 1. Once it arrives on July 4, 2005, it will shoot a 370-kilogram (816-pound) impactor into the dirty snowball, making a crater some 7-15 stories deep. NASA is offering for the public a chance to have their names written to a CD that will be placed on the impactor, thereby leaving their mark on a comet. If you'd like your name to be on Comet Tempel 1, visit the Deep Impact Web site at http://deepimpact.jpl.nasa.gov/sendyourname/index.html. Elton Jones __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Non-magnetic Brick Meteorite on eBay
Adam Hupe wrote: Here is a nice brick shaped meteorite wrong for the discriminating collector: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=2204998729category=3239 Before anyone starts trying to inform the seller of his meteor wrong-- this is a rehashed auction from a few months back..Same photo, same compressed neutrons, same yada yada... I don't think he took our emails to him well... Elton __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Odd ball non-standard petrologic slides on eBay
[EMAIL PROTECTED] wrote: Steve and mark- I am selling these small thin sections of park Forest and if you think I took the time carefully cut them down in size that's fine. What purpose would this serve? The cover slip completely covers the specimen so it is not to get two out of one. Steve, you have jumped on me for this before...it is the way my thin section maker made them. It is a thin section, sorry the slide doesn't fit your scope. -- Rob Wesel Rob, I think having a standard size size allows for indexing a slide's features so another researcher can return to the same point(s) on a different microscope. Regards, Elton __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Protecting Chondrites
Hello List, Vishnu, Some meteorites are very friable meaning you can crumble them with little to moderate hand pressure. Friable meteorites are well know but not necessarily common. The rust marks are likely just that-- rusting iron flakes and can come from handling and storage conditions. As I recall this arrived during a monsoon. You might be able to arrest the rusting/lawencite disease using the procedures for stabelizing irons but perhaps another list member can elaborate on treating a friable stone such as Burbojle(sp) which fell through sea ice and deeply into the underlying mud. Elton I have noticed brown specks on my Orissa chondrite are these rust marks? Is there anyway to prevent this from happening or at least control this. Another silly doubt I have is that this meteroite is very brittle...just breaks apart when pressed hard...is this common for chondrites? clear skies Vishnu __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Frequent Meteorwrong identified-pholad bivalve borings
Some of us have seen the recent Gao-Gibeon(sic) meteor-wrong auctions and, from time-to-time we see these submitted for meteorite identification. The holes are formed by boring clams. Take a look at the following link for a photo of their borrows in bedrock. It is easy to see how a fragment of the rock, tumble-polished by wave action can look so unworldly. Elton http://www.lakeneosho.org/TEMP9a.html Here is a description submitted to Paleo List @ yahoogroups by Dr Norm King. *I would like to share this with the membership. Many of us know about boring clams from our Paleontology studies. However, there may be some that had a few questions like my dad asked. Dad sent me the following questions after viewing the web page. Never heard of a rock boring clam Dumb questions 1 2 3 1 How large are they? 2 Do they produce HCL acid ?... 3 How do they bore ? Maybe Dr. King should help me... DAD I referred the questions to Dr. Norm King and he sent him the following response ... I found the reply interesting and informative. There may be on the list who will find the following interesting also. Barry Dr. Kings reply to Dad's questions __ Well, the boring clams were only looking for a place to live where no predators could get to them. These particular types of Pholads (Family Pholadidae) bore by mechanical abrasion. Members of other families use chemical means. Some bore into wood, and are often called pile worms or ship worms, causing a great deal of destruction to pilings in coastal regions. They begin as tiny swimming juveniles that settle onto a rock or sediment or wood surface. As they grow they move farther into the substrate, making a larger boring except for the aperture. The aperture remains small--just large enough for them to stick their siphon through. Since the body grows but the opening stays the same size, they are trapped in their borings. They pull in a current of water and filter out plankton. Most other clams eat the same way, although a few have siphons (rubbery tubes) that literally vacuum up food particles from the sea floor. Cool, yes? Norm * __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Observed Lunar Impact 50th Anniv Stuart's Crater
Notible Asteroid Impact observed by a modern human Taken From :http://astrogeology.usgs.gov/HotTopics/20030307_stuartscrater.html Also 3 Meg Tiff file of Crater:http://astrogeology.usgs.gov/HotTopics/stuartcrater/LOIV109h1_portion_labels_inset.tif Lunar Mystery Solved On the morning of November 15, 1953, amateur astronomer Dr. Leon Stuart photographed what he believed to be a massive, white-hot fireball of vaporized rock rising from the center of the Moon's face. If his theory was correct, he would be the first and only human in history to witness and document the impact of an asteroid-sized body impacting the Moon. Almost a half-century passed, and what had become known in astronomy circles as Stuart's Event was still an unproven, controversial theory. Bonnie J. Buratti, a scientist at NASA's Jet Propulsion Laboratory, Pasadena, Calif., and Lane Johnson of Pomona College, Claremont, Calif., took a fresh look at the 50-year-old lunar mystery. Buratti and Johnson first looked at imagery from the Lunar Orbiter mission, but were unable to definitively identify a candidate crater that would be the evidence of the event. They then turned to Clementine mission imagery, which offers more color information than Lunar Orbiter imagery. With Clementine mission data, they have identified a crater that is most likely the result of Stuart's Event, validating his claim to have seen the impact. Buratti and Johnson's study appears in the January 2003 issue of the space journal, Icarus http://www.sciencedirect.com/science?_ob=IssueURL%38;_tockey=%23TOC%236821%232003%23998389998%23385584%23FLA%23Volume_161,_Issue_1,_Pages_1-198_%28January_2003%29%38;_auth=y%38;view=c%38;_acct=C50221%38;_version=1%38;_urlVersion=0%38;_userid=10%38;md5=11fe84638513d51d0d78a4dd607ae08b. Here at the USGS Astrogeology Research Program, team members on the Lunar Orbiter Digitization Project (LODP) http://astrogeology.usgs.gov/Projects/LunarOrbiterDigitization/, led by Lisa Gaddis http://astrogeology.usgs.gov/About/People/LisaGaddis/, have looked at their reconstructed imagery of the region and found evidence of a crater supporting Buratti and Johnson's claim. For the LODP project, team members are scanning film strips from the Lunar Orbiter Mission, digitally mosaicking the strips into frames, and enhancing the results to remove errors and artifacts such as striping. Because the crater lies on the edge of a film strip, the crater is partially obscured in existing mosaics published in the /Lunar Orbiter Photographic Atlas of the Moon/ by Bowker and Hughes (NASA SP-206, 1971). With the improved mosaics being created by LODP, the crater identified by Buratti and Johnson can be seen clearly in the reconstructed Lunar Orbiter image data (see the images to the left). Suggestions have been submitted to the the International Astronomical Union (IAU) http://www.iau.org/ to have the feature named Stuart Crater and be included in the Gazeteer of Planetary Nomenclature http://planetarynames.wr.usgs.gov in honor of Dr. Leon Stuart, who passed away in 1969. __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Make your Own Lunar or Martian Globe Map(OT)
For all the owners of Martian or Lunar meteorites here is an addition to your shrine. The USGS Astrogeology has poorman's planetary maps-- downloadable prints of planetary and their sattelites map- projections one can cut out and glue to tennis balls. There are flat projections you print out for your wall. http://astrogeology.usgs.gov/Gallery/MapsAndGlobes/ You'll note that many solar bodies are available. They are free! (Our Tax dollars finally showing a return!) I am thinking about hanging the whole set on my ceiling with a christmas tree bulb in each one as a way of brightening my meteorite bunker. Wow! a chance to put your kindergarden skills to practice. If they are rusty or you need technical assistance, please consult your 8 year old. Elton __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Just witnessed large fireball. Me too!
Michael Farmer wrote: Hi everyone, I just saw a very nice large fireball Anyone else? There might be some reports from further west, Phoenix, payson etc. Mike Farmer Not that one, but here in Pennsylvania, last night at 1:02 AM I saw one AZ 340 while driving north on I 476, 2 miles south of the Lansdale exit I hadn't had the time to file a full report. The angle was between 60-70, fast mover, green tint. Makes me wonder if we aren't in a long peroid, hitherto unknown, very wide stream of asteroidal debris. The fireball count has sure been up lately. Elton
Re: [meteorite-list] H-chondrite or mesosiderite?
IF it has any chondrule content, it is not a mesosiderite. It appears to be a metal rich H, based on the photo. Want to sell a slice? Elton Graham Christensen wrote: Come on. No one even willing to guess?? Any help would be greatly appreciated. http://www.geocities.com/aerolitehunter/mesomaybe.jpg Graham Christensen mailto:[EMAIL PROTECTED] __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Test-delete Missing posts 17:05 EST
Seems many of us are missing posts into the blackhole of the internet... Test __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Awesome Meteorites at the Field Museum
Roman Nakonechny wrote: I dont want to hear from Mr. Meteorite Chaser/Hunter that he thinks it's a this and it looks like it resembles a that and sure as hell has the feel of a this and that AND SMELLS LIKE AN IT, maybe I missed the great moment when P.F. was classified/certified? Any answers will be appreciated.Thanks Bob. Good Night. ~~~* Roman N. (IMCA # 0583) Roman is there any doubt in your mind that Park Forest WASN'T A meteorite? The second observation on your lament of not paying/buying until a specimen is Classified vs Validated --- is that no blanket classification in the world will answer the question as to the identity of a given specimen.Therefore if you know it is Park Forrest..and it is a price you'd pay for Park Forrest, what does the wait for classification have to do with this specific fall? Elton __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Modeling Meteorite Impacts
Title:Modeling Meteorite Impacts: What we Know and What we Would Like to Know Document ID: 20030080001 Report #: None Sales Agency: CASI Hardcopy A01 No Copyright Authors: Melosh, H. J. (Arizona Univ.) Journal: Results of the Workshop on Impact Cratering: Bridging the Gap Between Modeling and Observations Published:20030101 Source: Arizona Univ. (Tucson, AZ, United States) Pages:2 Contract #: None Abstract: Meteorite impacts can be studied by computer simulation: Large meteorite impacts are among those phenomena that are either too large or too dangerous to study experimentally. Although impacts have affected the formation and surfaces of nearly every body in the solar system, we are limited to observing the results of past events. Investigation of impact processes is thus divided into observational studies of the traces of past impacts, small-scale analogue laboratory experiments and, most recently, detailed computer modeling. Computer models offer the possibility of studying craters at all scales, provided we completely understand the physics of the process and possess enough computer power to simulate the features of interest. Language: English Notes:Workshop on Impact Cratering FROM FROM __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Recognizing a Venusian meteorite
Howard Wu wrote: Still the question was how would we recognize a venusian meteorite? Great question to ponder. As a lay astrogeologist here is an answer as I see it. So far we only have the direct sampling of the Venusian atmosphere by the Soviet mission. The isotope ratios of the Venusian atmosphere will help in confirming meteorites from the Mercury Venus Zone. The analysis will initially lie in the differences in isotopic ratios between Mars and Venus, I feel. Age of formation will be equally important. We need a mission to Venus again! We know that there is a gradient of heavy to light elements produced by a presolar shockwave(s) that swept elements outward from the center. This is why the inner planets are stony-irons and the outer ones are gaseous. Having higher momentum / inertiamoments, the heavier elements tended to remain in the inner solar system while lighter elements rode the bow wave to the outer edges. Of course all the atoms of each element were not completely segregated, none-the -less there was a measurable sorting. We know this from measuring values against the elemental abundance of the solar system. Theelemental abundance is a calculation of all elements against each other such that we know the ratio of each individual element to all the others or, in another way, we know their individual percentage in the entire mass of the soar system. Along with the afore mentioned distribution/concentration of elements, is a subset distribution within the isotopes of individual elements. For example, from each area of concentration in the solar system for oxygen, the ratio of isotopes such as Oxygen 16, 17, and 18 as they relate to each other vary. Specifically, they vary with the distance they are from the center of the solar system. The lighter the isotope, the more distantly it moved toward the outer edge of the solar system. The Earth Moon ratio has been determined. This is one of the means we used to identify lunar meteorites. Similar ratios were used to identify Martian meteorites based on Viking Lander measurements. Igneous rocks from Earth and Mars pretty much contain the same minerals so we rely on isotopic ratios and radioisotope ages to shore up our findings. In like manner, that is how the determination of a Veneusian meteorite will happen. While the jurry is out on Mercury, some think it was captured and its orbit of formation lies elsewhere, (isotopic ratios may not be what is expected from a planetoid forming close to the solar center), Venus is another story. It is certianly a differenteated body and recently volcanicaly active. Any Enstatite chondrite (E,EH,EL) can't be from Mercury nor Venus. Likewise the age of formation/crystallization for Venuisan material will likely be much less younger than asteroidal material. So Venusian material will likely be isotopically weighted toward Oxygen 18 and will have a crystallization age closer to Martian material but I am guessing under 2 but less than 3-3.5 billion years. Regards, Elton __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Meteorite Mineral Trivia: Lawrencite
While researching mineral locations I happened upon an entry for Lawrencite. Lawrencite's type locality is the Tazwell,Tennessee Octahedrite IIICD, Find, 1853. " Type Locality" is the place that a mineral is first identified to science-- which for this mineral occurred in 1877. In addition to the meteorites listed Natan (go figure), Odessa, and Zenda WIsconsin, it has also been found around volcanoes in Italy and Russia a site in Greenland. While not listed it in virtually 99% of meteorite collections For the new folks, Lawrencite disease is the bane of meteorite collectors. The chlorine ion facilitates the rusting away of the metal. Tazwell http://www.mindat.org/loc-27789.html Lawrencitehttp://www.mindat.org/min-2351.html and http://webmineral.com/data/Lawrencite.shtml Elton __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Re: [meteorite-list]Atmospheric Blowout( was Cosmos 96/Kecksburg-Venus Question)
Yes ordinarily the atmosphere's density on Venus makes for a formidable obstacle. Be it remembered, that with a huge impact event there is theorized to be a blowout over the impact site. We think this plume of ejecta can reach the top of the atmosphere, plus exceed escape velocity. As for Mercury my recollection is that it has a micro atmosphere and wouldn't be a factor in reaching escape velocity. It is hard to rule out that nothing could escape both Mercury and the Sun. I think the masses of the Moon and Murcury are nearly the same. I'll have to think on the Sun catching everything however it does make it a lot more remote that we on Earth catch anything liberated from either innner planet. So I am not ready to rule out the possibility that Venus of Mercury have releases meteor-oids into the solar system. Elton Bernhard "Rendelius" Rems wrote: I thought about the chances for meteorites from Venus or even Mercury a couple of days ago, too. My conclusion (which isnt a scientific one, just an educated guess): Venusian atmosphere is so dense that it will slow down an impacting body considerably (reducing his energy) and slow down ejecta as well (making it impossible to reach escape velocity). With Mercury, I guess the sun will be the big catcher that will collect all ejected material. But once again, I am not a scientist J Bernhard __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Looking for Elton, TX and Maryville, TN
Should any of our esteemed dealers be making instutional trades, I am looking for a sample of Elton , Texas (1937?) Iron and Maryville, Tennessee(1983)H chondrite. The reason for former is self explanatory. I think some came out of the King Collection. As for the latter, I apparently was the sole eyewitness to the fall. The finder, a school teacher, has dropped off the radar screen. She kept half and the balance is in the Smithsonian--last time I handled it anyway.(wink) Keep me in mind please if an opportunity arises. Thanks, Elton __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Collecting Habits, a walk down memory lane (long)
Walter had this subject almost right...a habit? Maybe. Addiction? for many of us. As to collecting strategy, mine has migrated over the years much as I suppose many other Lay Collectors. When I began collecting there was a scarcity of meteorites exhibits, literature, and photos available for me to study. I subscribed to the belief that meteorites are all around us if we cultivate a trained eye we will have a better chance of finding them. I started collecting about the time Mike Farmer moved from student to full time seller, long before the concept of hot desert meteorites. There were perhaps less than 40-50 named meteorites commonly traded. Fortunately, they included samples of Irons, Stony, and Stony Irons so those were easy slot to fill. Crust--any Crust, was to DIE for. Gibeon, Canyon Diablo, Sikhote Alin,and Odessa were virtually99 % or the Iron trade. Common Chondrites about a 50-30-20 split between Western US, Russian/European locales and the rest of the world and mostly L-6s. Achondrites- Mt Edgerton, Tatahouine, Pena Blanca Springs, Norton County, were available and fortunately covered a large portion of the big 4 Achon. classes: HED's and Aubrites. Imilac,Vaca Muerta, Huckitta, Brahin and Brenham were practically the only available Stony Irons. Esquel was and is expensive. Allende was expensive by today's standards, but plentiful. The other available Carbonaceous Chondrites you could count on one hand. No primitives, No R's Rumuruti E's Enstatites--I am not sure if Martians and Lunars had been recognized as such. From those easily available named meteorites I assembled a good starter collection of micro mounts to be a field/lab reference to compare against candidates. I thought this is about it I have enough. There weren't many die-hard collectors then. For many of us our collections were limited by the number of times a week we could donate blood(wink). This was my Starter category. I used it in talks to students and people wanting an opinion on their find. EBay commingled us with all the other Rocks and Minerals. Here on the list we debated a lot about meteorite in-flux, and dispensed a lot of information about Meteorite 101 before Richard and Dorothy Norton put it together for our community. Harvey H. Was quoted chapter and verse because only a couple of us had Catch a Fallen Star to share with everyone else. Most of the meteorite list Founding Fathers (plus a hand full of ladies) were here then. Bernd, then as now, had the most obscure questions answered within the day. Ron also kept us plugged into NASA's related effortsAh the good old days! Meanwhile, back at eBay, El Hammami was the cheapest common chondrite around. Little anyone suspect that this huge fall--caravaned to civilization by Nomads on camels, would foreshadow the Gold Rush of the 90's. Dar Al Gani aka DAG meteorites hit the market-- so plentiful were they and, so sparse was DAG for land marks, we started numbering them. About the time we became accustomed to the convention, Sahara001,002,003-- who knows? was available to collectors. Meteorites were so inexpensive, the lay collector could afford 30 and 50 gram slices and even whole stones! Collecting interest was now fueled by the variety of matrix colors, shock veins of ringwoodite and, breccia we could actually see! Weekly, the numbers continued to roll out but they lacked sequence. A number here-- a number there, the collector now wanted to get the full Sahara Sequence and seemed a possible collecting goal. Dohfar and HaH were also commonly seen subsets of hot desert locations. A palm-sized, full slice, was not to DIE for they were affordable! A whole stone was still as much as a late used car. It was worth a near death encounter, only. A partslice, thin section, AND the rest of a half kilo stone they came from--THAT was to DIE for. About this time major dealer wars arose (and I don't mean price wars) over named vs numbered meteorites-- whether or not they were worthy of even dealing with. The lay community rose up advocating a boycott against the lowly nomad who brought us these treasures because these Camel Operators didn't subscribe to the professional standards of recording collection data. When there were quiet times, a subtle serendipity was emerging. Those missing numbers started showing up but they weren't the commonly known classifications Angrites? Urelites? Rumuruti ? What is an R chondrite? I had just got used to calling them L and LL instead of Bronzites and Amphoterites. CH's CR's CK's-- oodles of Subclasses of Carbonaceous Stones. Whole new branches of collecting fervor happened in the span of a few months. We actually discussed meteorite science for a while as the classification reports made it to the list and not just shuttered away in the annals of the Meteoritical Bulletin(MAPS). When we didn't think it could get any better... A Shergot-what? From
Re: [meteorite-list] Beginner Collection-suggestions
Hello Vishnu! Welcome to the list. I am confident that some of the folks here would put together a collection for you in exchange for a sample of Orissa. I see Bregory gave you some good links already. Speaking of stones from India, one of my favorite meteorites is Parnallee, India (District ukn.) Fall, 1860. It is an LL-3. It is packed full of multicolored chondrules some of them are armored--meaning that they are coated by a layer of nickel-iron and look like little halos in cross section. I consider it a classic for several reasons. It is available on the market if you watch for a while ( No I am not selling mine so this isn't pre-sell hype) You can go to one of the auctions such as Ebay there are usually around 300-500 meteorites there on any given day. Or look over the web pages of our many dealers on this list at Meteorite Central's Links page. After reading up on the different categories, you'll know more what is available. Personally I think 10-15 is a good direction for the average person to start with prices are very economical. All of these are available in micromounts 1- 2 grams or less For most any budget, my list starter list for would include: Irons: $3-$15ea. Gibeon, Canyon Diablo(aka Meteor Crater), Sikhote-Alin, Odessa -- especially Sikhote-Alin These are what people think of when they think of meteorites and a new find has made it easy to get really nice ones. Stony: Common Chondrites: $1-$5ea Take your pick, but get an H, L, and LL. At least try to get one in the 3 -4 range and 5-6 range to see the differences between the 3s to 6s. When you get the hang of these Follow up with and R and E class. Carbonaceous Chondrites: Allende is the what most start with but several types are available now and you can collect any of the 8(?) or so clans of Carbonaceous Chondrites. Achondrites: HED's/A: Howardites, Eucrites, Dioginites and Aubrites such as Mt Edgerton, Tatahouine, Pena Blanca Springs, Norton County or many NWA(North West Africa). The Howardites are a bit more pricey and are an asteroid-soil mix of many other meteorites types. You can get a small piece for under $30. Planetary: Shop around for a piece from Mars. In time, look to add one of the lunar meteorites. In the past year several different variations of these are on the market. Stony Irons- Pallestites and Mesosiderites: Vaca Muerta, Huckitta, Brahin or Brenham. All under $15-20 While you can get them, invest in a larger-sized meteorite Iron or Stony whole meteorite (fist or egg sized) $30-$60 Good Collecting! Regards, Elton __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] 3-D Meteorite Photos at NHM
Hello List, I just ran across this site at the Natural History Museum in London if you have a java capable browser you can rotate the image. One of the virtual wonders pages quasi-three dimentional views of six meteorites . Here is Nakhla!http://www.nhm.ac.uk/museum/vr/vrmeteorite5.html Regards, Elton __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] nitric acid disposal
IF I remember the admonitions of my chemistry teacher correctly..NEVER add Acid to the water but add water to the acid. Should there be a boil up you'll get wet and not disolved. Elton __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] nitric acid disposal
What ever it is I'd like for the truth be known...My recollection is this was to avoid acid splash back. However, 35 minutes-- little alone 35 years, is a long time to test recall for me. Your explaination seems more rational . Elton Robert Woolard wrote: Hello Elton and list, I think it's the other way around, isn't it?? Perhaps this explains why: Never add water to acid, the heat of hydration could boil the water/acid mixture as the first drops of water mix with the acid. When you add acid to water, it takes a lot of heat to boil the large volume of water that you are hopefully using. Or, using this memory aid: Lab Safety - Remembering that you add Acid to Water not Water to Acid AW can be a short form for Acid to Water; WA can be a short form for Water to Acid. When verbalized, AW sounds pleasant and good. A!. WA sounds menacing and bad, WAHH!. If you can introduce this laboratory safety rule to your students with lots of enthusiasm, most will remember the rule because of your antics. I hope this helps... (But it's been a LONG time since high school chemistry! ;-) Sincerely, Robert Woolard __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Matteo's Challenge Answered(was India #2)
I think I understand the challenge Matteo has put forward. Ok Here is something I have sat quiet on giving him the benefit of the doubt. I bought a speck of DAG 400 from you perhaps 4-5 years ago when it was rare. You told me it was about 2mm x 1mm x 1mm. I sent you $100 dollars. The particle I got from you wasn't even 1 mm on any axis. So by conseravite accounts you short changed me 1/2-2/3s of the size I agreed to buy. Now I am always forced to wonder if I actually bought DAG 400 or a piece of beach sand...I only had your reputation to stand behind it's true idenity. Sincerely, Elton Jones --- John Gwilliam [EMAIL PROTECTED] wrote: Most have kept quiet because they know it's good form to keep one's mouth shut most of the time. continue your banal rhetoric. You certainly don't want more testimonials to make their way to this List, do you? Your silence would be greatly appreciated, M come Meteorite Meteorites wrote: Ah yes. ... who have been these persons, I am actual curious to know, but I see that here it is threatened but not speaks. Pertain the meteorites, big little, gained from you always I paid immediately, see also on ebay, while with a certain meteorite you pretended of not understand that I wanted to buy it when had given it ok that was on hold for me, and after few minutes had been sold. I repeat, to all the persons that I have sold meteorites any of this has complained, therefore I do not know where you dream you these persons that did not do questionable business with me, while to the opposite one I should say it with who did questionable business, and it seems to have me also written. Pertain my silence, if I want I am quiet, not you of secure you make myself be quiet. Matteo __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] eBay policemen? ONE MORE TIME ....
...Hey Folks! Where do we conduct IMCA related business? ..The IMCA mailing list of course!! (I am suggesting to the BOD (board of directors) at IMCA, that they adopt a policy that ALL IMCA business be restricted to the IMCA list unless specifically authorized otherwise. This Witch Hunt is out of control Ag!H!) Tom aka James Knudson wrote: snip Lets say someone new goes on ebay and sees a 2000g Campo described as HUGE...snip. He gets it and is thrilled with this Huge Campo. -NOTE: he is thrilled you said so yourself He gets the BUG and goes back to Ebay to look around. This time he finds a 94lb Campo, but his campo was huge? So what is a buyer to think? DONT TRUST THEM DISHONEST IMCA MEMBERS, that whole bunch are full of #%$(# ! ) Now what, buy from none IMCA members, OK, and it turns out to be slag! Oh well, this meteorite collecting thing sucks! You can not trust anyone! I see you are impassioned about this but, has anyone come to you and lodged a specific complaint? Or is this a debate about the number of angels who can dance on the head of a pin? What punishment are you advocating? Stoning them with their own auction? lol Tom you are old enough to know that to men size is relative and subject to inflation in their imaginations!! I don't see the beef! Thanks, Tom wondering if I should be the proudest member of the IMCA 6168 Well Frankly, I have always wondered how you got that title. I didn't get the notice of competition! Not that I care who claims it, but how can you attack other's freedom of expression and use the self proclaimed title of proudest member? Do you see my point? Seems you are saying that it is wrong only if it isn't your wording. (Yeah I know I sound harsh but Don't wager it if you aren't willing to lose it and not whine.) All kidding aside now. ONE MORE TIME: IMCA Business on IMCA net!!! Why is that such a hard concept to follow? Post to your hearts content overthere. IMCA has a procedure for approaching the sellers of questionable auctions. IMCA has a procedure of taking up complaints against members who are accused of violating the IMCA policies and the BOD will investigate and decide who is in violation not the member. That said, What do you want the meteorite central list members to do for you? Elton and Oldie BE __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] ebay descriptions what part of 144 grams is confusing?
Last time I went to school a $144.00 item which was priced at $1.00 a gram usually means that the weight is 144 grams.And Welcome again to the Ebay Central List! Elton Tom aka James Knudson wrote: Hello List, Just taking a poll, am I the only one who gets irritated at some peoples ebay descriptions? It is so strange how some sellers have only museum quality meteorites whether it is a 40 pound SA or a 20g rusted Nantan. Others, everything is HUGE or GIGANTIC even if it is a 12g iron. What ever happen to truth in advertising? Do some people just not have it in them to be honest? Are they so desperate to make a sell that they have to lie? I personally will not buy from sellers that have to use deception to sell a meteorite. If it's a case of them just not knowing, then they should spend a few minutes looking around ebay! : ) __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] deceptive? IMCA business again????
Why are we still discussing IMCA business on this list and not the meteoritecollectorsassociation list? (just asking) Why are we cross posting messages when most of use are on all the meteorite related lists anyway?.. deleting them once is not enough now? (just asking) And why are we still hashing ebay mayberite and maybewrong auctions on meteorite central? (just asking) I know it is ALL meteorite related but it is in your face all the timeI'd like to have a sanctuary where meteorite science can be explored without the revenues of the reality shows like-- Dealer Smackdown, Inquisition on Ebay, Name that Auction And the favorite-- Weakest Dealer Links (just wishing) Elton Old Timer from the BE days __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Wales photographs
Some how I have not found the links to all three photos. Would someone please send the URL's directly to me? Thanks Elton __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Fossil Meteorites
If memory serves, the petography of the Swedish fossil meteorites (Thorsberg/Kinnekulle) (480mya) was altered/ replaced (chemically). Most of their original chemistry is gone, being true fossils, their physical form was retained. Someone noted here that while the meteorites had been largely replaced by calcite and barite, traces of chromite and iridium were found within. Bernd has posted the studies on this once before (1999?). I wonder if chondrities were found else small blebs of serpentine. Lake Murray, Oklahoma, US-- at 150 million years, is the meteorite with oldest known terrestrial age. It was found in situ in limestone where it landed. A large portion of it is meteoric shale however the core is still bears a remarkable amount of metal and preserved Widmanstatten features. The T-age is consistent with the age of the strata, I believe. Someone mentioned Hoba, it is resting in limestone bedrock within the pit it excavated upon landing. In my days on Ebay before I was this poor even, there was an auction for an apparent fossil meteorite impact channel and all-- in cross section (offered but failed to meet reserve). The 2-3 inch wide nugget was at the bottom of an apparent 10-8 inch long impact channel made while the very fine ooze was still mucky. The cavity had several heart-valve appearing trap doors. They looked like partial refilling of the ooze after the meteorite had passed. The owner never relisted it and the where abouts are unknown. The 3-D exposure was far more dynamic than the any simulation ever has been. In one of my many idle projects, I have two specimens recovered from the Eastern PA anthracite field which have some halmarks of a meteorite. They are stored away awaiting some researcher taking them on. (hint, hint) Regards, Elton __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Pool-resend
Subject: Re: [meteorite-list] columbus, new mexico for trade plus free brahin From: [EMAIL PROTECTED] Date: Mon, 22 Sep 2003 21:43:49 +0200 To: [EMAIL PROTECTED] The first one bounced...Nuck Nuck NUck! Ok Gang--I believe I won the this pool (finally)-- I had the 48-72hour (day three)block and 3:48 CDT/1:48 Pacific! was after midnight. Unless anyone else has an earlier email(Sunday) I believe I was closest -- you can send my portion to my paypal account and the charity balance goes to The Red Cross...Thanks From: "Steve Arnold, Chicago!!!"[EMAIL PROTECTED] Date: 2003/09/22 Mon PM 03:48:10 CEST To: [EMAIL PROTECTED] Subject: [meteorite-list] columbus, new mexico for trade plus free brahin Good morning list.I do not know if this email ever got out.I did not see it.But I am offering a 9.2 gram piece of COLUMBUS,NEW MEXICO for trade.I originally got the main mass of columbus from mike cottingham.So this one becomes available for trade. Death To SPAM
Re: [meteorite-list] Pool--Disregard! Private message
Please disregard and forgive I accidentally posted a private message to the list. I see my address book still has bugs. Elton __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
