[meteorite-list] CT scan from Black Beauty - Martian meteorite interior
https://eurekalert.org/pub_releases/2019-03/uarl-mml031319.php Thomas Kurtz Weil der Stadt, Germany __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list
[meteorite-list] Meteorite reclassification questions
As a newbie, I've come to rely pretty heavily on the Meteoritical Bulletin
database for information about particular meteorites as well as to look at
aggregate data for different types.
I've been somewhat surprised to discover that it is not unusual for meteorites
to get reclassified and I was wondering if anybody could tell me how and under
what circumstances a Met Bull entry gets updated to reflect new classification
information.
Ningqiang is a good example of reclassification updates. The Meteoritical
Bulletin database entry shows that Ningqiang was originally classified as a
CV3, per Meteoritical Bulletin #65 (1987) [1]. Then (if I'm interpreting the
entry correctly) it looks like it was reclassed as a CK3, per the Natural
History Museum's Catalogue of Meteorites, 5th edition (2000). And a subsequent
reclassification as C3-ung came per the 7th edition of MetBase (2006).
The particular example I had questions about is the entry for Hart, a Texas
meteorite found in 2010 and that was initially classified as a CK3 [2]. CK3 is
a pretty rare carbonaceous chondrite type and Hart was apparently the only
meteorite in the U.S. to get that classification. However, I recently came
across a scientific paper ("Reclassification of Hart and Northwest Africa 6047:
Criteria for distinguishing between CV and CK3 chondrites" [3]) that appears to
make a persuasive case for Hart being reclassified as a CV3. This paper was
published in 2017, but there is no update yet in the Met Bull entry.
So my questions are:
1) Will the Meteoritical Bulletin database entry for Hart eventually get
updated to reflect a change in classification?
2) What mechanisms (if any) are in place to keep track of these types of
reclassifications and make updates? (From what I've seen, there is a mechanism
for Antarctic meteorites via the Antarctic Meteorite Newsletter. See, for
example AMN item on reclassifications [4] and subsequent Met Bull database
entry update [5].)
3) Is there some body that mediates between competing classification claims?
E.g. what if the original classifier disagrees with a reclassification?
-- Michael
[1] https://www.lpi.usra.edu/meteor/metbull.php?code=16981
[2] https://www.lpi.usra.edu/meteor/metbull.php?code=56555
[3] Dunn, TL, Gross, J. 2017 Reclassification of Hart and Northwest Africa
6047: Criteria for distinguishing between CV and CK3 chondrites. Meteoritics &
Planetary Science 52(11):2412–2423
[4] https://curator.jsc.nasa.gov/antmet/amn/amnfeb10/reclassifications.htm
[5] E.g. for EET 96010 https://www.lpi.usra.edu/meteor/metbull.php?code=9604
Michael Doran
Fort Worth, TX
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[meteorite-list] AD: Mars, Moon, Carbon, OC
Hello Members. I have some fine quality NWA material for sale. Please, if you are interested, contact me off list. Best regards Abdelaziz Alhyane __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Identifying putative planetary-origin meteorites
Dear list members, this discussion on the nature of 'John's stone' etc. has been going since 2013... See: https://www.sciencedirect.com/science/article/abs/pii/S0019103514004680 https://www.sciencedirect.com/science/article/abs/pii/S0019103515002626 https://www.sciencedirect.com/science/article/abs/pii/S0019103515004236 https://arxiv.org/ftp/arxiv/papers/1605/1605.01892.pdf https://arxiv.org/ftp/arxiv/papers/1706/1706.06093.pdf https://arxiv.org/ftp/arxiv/papers/1802/1802.09960.pdf Read and make up your own mind! Best regards Martin Gesendet: Mittwoch, 13. März 2019 um 00:04 Uhr Von: "Mattias Bärmann via Meteorite-list" An: Paul , Meteorite-list@meteoritecentral.com Betreff: Re: [meteorite-list] Identifying putative planetary-origin meteorites Very interesting indeed, thanks, Paul, for sharing. Would be thrilling to be compared with Stefan Ralew's NWA 7325. Surprisingly I couldn't find any references to NWA 7325. Best - Matthias Am 12.03.2019 um 23:34 schrieb Paul via Meteorite-list:Anfinogenova, Y. and Anfinogenov, J., 2019. Challenges of identifying putative planetary-origin meteorites of non-igneous material. Geoscience Frontiers. (Open Access) https://www.sciencedirect.com/science/article/pii/S1674987119300209 https://arxiv.org/abs/1802.09960 And just when I thought that I had seen everything, this paper appeared. Fastook, J.L., Head, J.W. and Deutsch, A.N., 2019. Glaciation on Mercury: Accumulation and flow of ice in permanently shadowed circum-polar crater interiors. Icarus, 317, pp.81-93. http://www.planetary.brown.edu/html_pages/publications.htm[http://www.planetary.brown.edu/html_pages/publications.htm] http://www.planetary.brown.edu/pdfs/5065.pdf https://www.sciencedirect.com/science/article/pii/S0019103517306061 Yours, Paul H. __ Visit our Facebook page https://www.facebook.com/meteoritecentral[https://www.facebook.com/meteoritecentral] and the Archives at http://www.meteorite-list-archives.com[http://www.meteorite-list-archives.com] Meteorite-list mailing list Meteorite-list@meteoritecentral.com[mailto:Meteorite-list@meteoritecentral.com] https://pairlist3.pair.net/mailman/listinfo/meteorite-list__ Visit our Facebook page https://www.facebook.com/meteoritecentral[https://www.facebook.com/meteoritecentral] and the Archives at http://www.meteorite-list-archives.com[http://www.meteorite-list-archives.com] Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list[https://pairlist3.pair.net/mailman/listinfo/meteorite-list] __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Educational presentations at Tucson?
Hi Michael, Thank you (and others) for the feedback. I think I'll put this proposal in the category of "Seemed like a good idea in theory, but won't work in practice." I'm really looking forward to meeting you and many other meteorite people next year in Tucson. -- Michael Michael Doran Fort Worth, TX On Tuesday, March 12, 2019, 10:16:57 PM CDT, Michael Farmer wrote: The main problem is that the dealers are all tied up. I live in Tucson and the show is a time where I don’t have a spare second for about 5 weeks. I make a large chunk of my yearly income from the Tucson show. It’s a work time for me. Most collectors and buyers come to Tucson with a couple of days. In that time it’s impossible to see the show. The Tucson show itself is massive. Covers venues all over the city tens of miles apart. There just no time to attend such an event during the show. Michael Farmer > On Mar 12, 2019, at 3:04 PM, MexicoDoug via Meteorite-list > wrote: > > " I've not seen any proposals like this, but it's possible I have missed > those threads. If so, I would appreciate hearing about any "lessons learned" > from previous attempts." > > Hi Michael, > > Time at Tucson is at a premium, and the purpose of it is to get around and > see what's there. Tucson is an exciting place and there is just too much to > see. While some people may have the luxury of time on their hands, with the > Internet at everyone's disposal, you'd have to design things to really be fun > or interesting, IMO. > > We have had events at Tucson before so that is not at all true. Just not > really a series of seminars and such. But we had Blood's auction and the Gold > Basin Party, IMCA dinner, Parties organized by members of the community, and > it is common for groups to get together for dinners for time to catch up with > each other. What all these things had in common was that everyone was invited > or can do them, they are fun, and they require no real time commitment. After > all, we also have/had resources like Meteorite! a now defunct magazine, we > have a world class online publication Meteorite-Times.com, the list for > discussion where everyone chimes in, though Facebook seems to have taken some > critical mass from that. By all means, go for it if you would like to be a > force in the community doing this! Just don't be surprised if the response is > attenuated due to all the competing things going on, after all ... being in > Tucson during the show is a pretty hands on collecting, trading, swapping > experience and that's mostly why those from out of toown make the pilgrimage. > > Hope this helps add to your thinking > Doug > > > -Original Message- > From: Michael Doran via Meteorite-list > To: meteorite-list@meteoritecentral.com > Sent: Tue, Mar 12, 2019 3:52 pm > Subject: [meteorite-list] Educational presentations at Tucson? > > In my previous life as a systems librarian at a university, I regularly > attended conferences and user group meetings. An integral aspect of these > conferences/meetings were educational presentations done by attendees. It > occurred to me that presentations are something that might enhance the > experience of attending the Tucson Show. > > For example, while I know that there's nothing I can teach the old hands, > there are a number of things I'm figuring out as a newbie that I think would > be of interest to other newbies. Here are examples of presentations I would > be willing to do, if the opportunity presented itself: > > 1) Meteorite collection development plans: what they are and why you should > have one > > 2) Meteorite storage and display solutions for small (< 40 specimen) > collections > > And as an *attendee* I would really be interested in presentations from > people doing actual meteorite science about the work they are doing (geared > towards an educated lay audience). Also, I would be interested in > presentations from dealers about various aspects of meteorite acquisition, > classification, and preparation. > > To make this work would require: > > A meeting room > -- > A meeting room at one of the main meteorite venues at the Tucson Show that > for certain times/days could be devoted to presentations. The room would > need to have a basic presentation set-up: a speaker's table and/or podium > with a way to connect a computer to a projector and chairs for the audience. > The Tucson show lasts two weeks, but I would anticipate that the > presentations part would only be for one or maybe two days. > > Organization > > Someone to: > - Put out a call for presenters, and > - Based on response, determine how many time slots were needed, and > - Assign presentations to time slots in schedule and notify presenters, and > - Put out a presentation schedule with titles/abstracts prior to Tucson show > - Prepare meeting room for presentations > - Assist presenters with use of meeting room
[meteorite-list] AD NWA 4965 Brecciated Diogenite Lunar-like
Dear list members Tooday I like to annmounce new specimens of one of the best diogenite. Slices was perfectly polished to mirror from one side. Each slice is very thin around 1.6mm only so You pay for surface area, not for grams. Take a look https://www.polandmet.com/product-category/3-achondrite/nwa-4965-diogenite/ -[ MARCIN CIMALA ][ +48 793567667 ]- http://www.Meteoryty.pl marcin(at)meteoryty.pl http://www.PolandMET.com marcin(at)polandmet.com [ Member of Polish Meteoritical Society ] __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Identifying putative planetary-origin meteorites
Very interesting indeed, thanks, Paul, for sharing. Would be thrilling to be compared with Stefan Ralew's NWA 7325. Surprisingly I couldn't find any references to NWA 7325. Best - Matthias Am 12.03.2019 um 23:34 schrieb Paul via Meteorite-list: Anfinogenova, Y. and Anfinogenov, J., 2019. Challenges of identifying putative planetary-origin meteorites of non-igneous material. Geoscience Frontiers. (Open Access) https://www.sciencedirect.com/science/article/pii/S1674987119300209 https://arxiv.org/abs/1802.09960 And just when I thought that I had seen everything, this paper appeared. Fastook, J.L., Head, J.W. and Deutsch, A.N., 2019. Glaciation on Mercury: Accumulation and flow of ice in permanently shadowed circum-polar crater interiors. Icarus, 317, pp.81-93. http://www.planetary.brown.edu/html_pages/publications.htm http://www.planetary.brown.edu/pdfs/5065.pdf https://www.sciencedirect.com/science/article/pii/S0019103517306061 Yours, Paul H. __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list
[meteorite-list] Educational presentations at Tucson?
Michael wrote: " I've not seen any proposals like this, but it's possible I have missed those threads.If so, I would appreciate hearing about any "lessons learned" from previous attempts." Doug wrote: Hi Michael, "Time at Tucson is at a premium, and the purpose of it is to get around and see what's there. Tucson is an exciting place and there is just too much to see. While some people may have the luxury of time on their hands, with the Internet at everyone's disposal, you'd have to design things to really be fun or interesting, IMO." ... text deleted ... "By all means, go for it if you would like to be a force in the community doing this! Just don't be surprised if the response is attenuated due to all the competing things going on, after all ... being in Tucson during the show is a pretty hands on collecting, trading, swapping experience and that's mostly why those from out of town make the pilgrimage." A person could schedule such "educational presentations" like "short courses" are scheduled at scientific meetings. Do not schedule for during the meetings, but "premeeting," the day before the Tucson Show starts, and post meeting, the day after the Tuscon Show ends. That way the educational presentations are not competing with the meeting and all people need to do is arrived a day early or leave a day later to attend the presentations. Also, along with educational presentations, there is enough geology around Tuscon that a person could offer geology field trips. Yours, Paul H. __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Educational presentations at Tucson?
Hi Michael, I think your idea has merit but Doug points out some good points. What I would suggest if you were able to arrange this, first, I'd have presentations and talks more during the evenings after dinner time. Second, if you were to have a list of topics that were going to be addressed along with a time line, well ahead of the Tucson Show, so people could attend areas they were interested in. Maybe post the topics a week ahead of time before the show and post them again just before and during the show, I think you would get a steady group of people that would attend. Things like this cost money, but a fee to cover and off set costs would be fine as long as it wasn't too much or you would loose people. Perhaps a fee for each talk people want to attend. You might also offer some refreshments for a modest fee to off set the costs. I'd see if you couldn't get a hotel to donate a room for the talks. This could be all or part of the cost of the meeting room. I wouldn't appreciate dealers making an info commercial but if they gave solid science type of program, then fine. I have organized sizable conventions before (over 300 attendees) and it can be a lot of work but there is a lot of great scientist that are in the area or attend and I am sure that some of them would be glad to offer informative talks for the troops during the show. Good luck and hope you are able to succeed! Best! --AL Mitterling Mitterling Meteorites On Tue, Mar 12, 2019 at 6:22 PM Michael Doran via Meteorite-list < meteorite-list@meteoritecentral.com> wrote: > Hi Doug, > > Thanks! Yes that does help. You make some excellent points here. > Although the Tucson Show lasts a couple weeks, I imagine many/most > attendees are there for a much shorter period and like you say, their time > is at a premium. > > -- Michael > > Michael Doran > Fort Worth, TX > > > > On Tuesday, March 12, 2019, 5:04:10 PM CDT, MexicoDoug > wrote: > > > " I've not seen any proposals like this, but it's possible I have missed > those threads. If so, I would appreciate hearing about any "lessons > learned" from previous attempts." > > Hi Michael, > > Time at Tucson is at a premium, and the purpose of it is to get around and > see what's there. Tucson is an exciting place and there is just too much to > see. While some people may have the luxury of time on their hands, with the > Internet at everyone's disposal, you'd have to design things to really be > fun or interesting, IMO. > > We have had events at Tucson before so that is not at all true. Just not > really a series of seminars and such. But we had Blood's auction and the > Gold Basin Party, IMCA dinner, Parties organized by members of the > community, and it is common for groups to get together for dinners for time > to catch up with each other. What all these things had in common was that > everyone was invited or can do them, they are fun, and they require no real > time commitment. After all, we also have/had resources like Meteorite! a > now defunct magazine, we have a world class online publication > Meteorite-Times.com, the list for discussion where everyone chimes in, > though Facebook seems to have taken some critical mass from that. By all > means, go for it if you would like to be a force in the community doing > this! Just don't be surprised if the response is attenuated due to all the > competing things going on, after all ... being in Tucson during the show is > a pretty hands on collecting, trading, swapping experience and that's > mostly why those from out of toown make the pilgrimage. > > Hope this helps add to your thinking > Doug > > > -Original Message- > From: Michael Doran via Meteorite-list < > meteorite-list@meteoritecentral.com> > To: meteorite-list@meteoritecentral.com < > meteorite-list@meteoritecentral.com> > Sent: Tue, Mar 12, 2019 3:52 pm > Subject: [meteorite-list] Educational presentations at Tucson? > > In my previous life as a systems librarian at a university, I regularly > attended conferences and user group meetings. An integral aspect of these > conferences/meetings were educational presentations done by attendees. It > occurred to me that presentations are something that might enhance the > experience of attending the Tucson Show. > > For example, while I know that there's nothing I can teach the old hands, > there are a number of things I'm figuring out as a newbie that I think > would be of interest to other newbies. Here are examples of presentations > I would be willing to do, if the opportunity presented itself: > > 1) Meteorite collection development plans: what they are and why you > should have one > > 2) Meteorite storage and display solutions for small (< 40 specimen) > collections > > And as an *attendee* I would really be interested in presentations from > people doing actual meteorite science about the work they are doing (geared > towards an educated lay audience). Also, I would be interested in > presentations from dealers about various
[meteorite-list] Meteorite Picture of the Day
Today's Meteorite Picture of the Day: Sericho Contributed by: Hanno Strufe http://www.tucsonmeteorites.com/mpodmain.asp?DD=03/13/2019 __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list
