Re: [meteorite-list] Important Announcement form the Nomenclature Committee
No, the DCAs will simply require coordinates, like everywhere else. The proof condition is dropped. The NWA 9000s will be skipped. Believe it or not, nobody has submitted a request to reclassify Al Hag 001 or its siblings. Has there been a paper published on it? All I'm finding are abstracts. Jeff Sent from my iPad > On Feb 15, 2015, at 5:08 AM, Greg Hupe via Meteorite-list > wrote: > > Hello All, > > In a quick glance at comments tonight, but not reading the link to new rules, > I believe starting the new DCA mets with 'coordinates & proof' to be > confusing. Why start the DCAs at "NWA 10,000..." when in short time the > 'non-proof' mets will reach the tried and true 'NWA' naming system and > surpass 10,000? Why not simply add the 'sub group' "DCA" after "NWA"... > example... NWA-DCA 0001, NWA-DCA OOO2... and so on > > As for re-evaluating certain classifications for renaming, how about we fix > that Al Haggounia problem, it is still not an 'Aubrite'?? NWA 2828 was > rewritten in Abstract that the original 'Aubrite' designation was made with > original type sample, but after subsequent material was cut chondrules were > discovered and the correct science was selflessly announced... > > Best regards, > Greg Hupe > > Sent from my iPhone > >> On Feb 13, 2015, at 11:03 AM, Carl Agee via Meteorite-list >> wrote: >> >> http://www.lpi.usra.edu/meteor/MetBullNews.php?id=3 >> >> * >> Carl B. Agee >> Director and Curator, Institute of Meteoritics >> Professor, Earth and Planetary Sciences >> MSC03 2050 >> University of New Mexico >> Albuquerque NM 87131-1126 >> >> Tel: (505) 750-7172 >> Fax: (505) 277-3577 >> Email: a...@unm.edu >> http://meteorite.unm.edu/people/carl_agee/ >> __ >> >> Visit 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 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 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] Important Announcement form the Nomenclature Committee
To amplify on Carl's response... For the past 15 years, any meteorite from this region (except falls) would get an NWA number unless there was compelling documentation of the coordinates of the find. This might include a photo of the meteorite in situ with an active GPS. But this was rarely presented to NomCom and so it rarely happened. Now, like in other places around the world, NomCom will not question the coordinates of finds from Morocco and nearby countries (unless something is obviously wrong). The meteorites will simply be named. And like in other desert regions, this generally will mean DCA names. There are no longer special rules for northwestern Africa. We will have to see what happens. The reason the NWA rule was put in place 15 years ago was that it wasn't possible to assess the find stories of all the meteorites coming out of the marketplaces in Morocco. The rule changes take us back to that situation again, but now the nomcom will not even try to evaluate locations. The difference now is that, with DCAs in place, there will not be hundreds of names to adjudicate. As for the question about "firm, reliable coordinates," that will be for the reader to decide about any given meteorite. The other thing that changed in the guidelines were special rules for assigning provisional names to NWA meteorites. With nothing special anymore about NWAs, that went away (i.e., section 7.6 was revised). The "new" NWA meteorite (N>1) is no different than any other generically named meteorite. "Northwest Africa" now means, literally, that the meteorite is most likely to come from the northwest quadrant of the continent, and not that it was most likely found in Morocco and adjacent parts of surrounding countries. If nomcom is totally unsure of where a meteorite may come from, the name will be Nova xxx. Jeff On 2/14/2015 3:08 PM, Carl Agee via Meteorite-list wrote: Hi Mike, In a nutshell, the new rules allow geographic names for any Moroccan meteorite with find coordinates. To simplify the naming in desert areas, part of Morocco will have DCA grids. Under the new rules, any meteorite without coordinates, originating in Morocco or surroundings (meaning in practical terms purchased in Morocco) will be given a NWA name. The new style NWAs will start with NWA 10001 to set them apart from the old style NWA rules. There will be no retroactive names assigned in this new scheme. Nothing will change in the naming of falls, which will always have unique geographic names. Hope this clarifies. Carl * Carl B. Agee Director and Curator, Institute of Meteoritics Professor, Earth and Planetary Sciences MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 Tel: (505) 750-7172 Fax: (505) 277-3577 Email: a...@unm.edu http://meteorite.unm.edu/people/carl_agee/ On Sat, Feb 14, 2015 at 12:04 PM, Galactic Stone & Ironworks wrote: Hi Carl and List, Thank you for this update on the change. However, what exactly does this mean in practice? For example, would a find with coordinates like Mreira now be classified as a NWA 10xxx ? Or will finds with firm reliable coordinates still be considered for a place name and not a NWA 10xxx? On this page, I can see the crossed out portion about NWAs that was abolished. But what else has changed in regards to policy about classifying NWA material? - http://meteoriticalsociety.org/?page_id=59 Best regards, MikeG -- - Web - http://www.galactic-stone.com Facebook - http://www.facebook.com/galacticstone Twitter - http://twitter.com/galacticstone Pinterest - http://pinterest.com/galacticstone - On 2/13/15, Carl Agee via Meteorite-list wrote: http://www.lpi.usra.edu/meteor/MetBullNews.php?id=3 * Carl B. Agee Director and Curator, Institute of Meteoritics Professor, Earth and Planetary Sciences MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 Tel: (505) 750-7172 Fax: (505) 277-3577 Email: a...@unm.edu http://meteorite.unm.edu/people/carl_agee/ __ Visit 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 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 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] Met Bulletin Update : New Type Classification (E-Melt)
I wouldn't get too excited about this. Lots of enstatite meteorites (chondrites and achondrites) are melt rocks and melt breccias, and they've been described for decades by Alan Rubin and others, e.g. http://www.sciencedirect.com/science/article/pii/S0016703796003353 http://onlinelibrary.wiley.com/doi/10./j.1945-5100.1998.tb01654.x/abstract A-12057 is simply not yet grouped as EH or EL (you can bet it's one or the other), and has melt component in it like so many other E chondrites. So don't take it as any kind of first. It isn't, or at least there is no reason yet to think it is. One day, somebody will scrub the entire class and better classifications will be published in MetBull. Until then, arm yourself with knowledge rather than the labels you find in simple catalogs. Jeff On 6/6/2014 6:14 AM, Graham Ensor via Meteorite-list wrote: Yes, as Marcin said...probably just a fragment from an Enstatite which is totally melt...as you get with some Chelly individuals...I dont see how they can come up with a new type from just 4.5g like this??? Graham On Fri, Jun 6, 2014 at 2:18 AM, Galactic Stone & Ironworks via Meteorite-list wrote: Hi Bulletin Watchers, 437 meteorites from previous NIPR (Japan) expeditions to Antarctic have been approved for the Met Bulletin today. Buried in the hundreds of small OC's is an apparent new classification of E-Melt. This is the first and only meteorite classified as "E-Melt". Frustrated Type-Collectors, please meet Asuka 12057. Link : http://www.lpi.usra.edu/meteor/metbull.php?code=60054 Best regards and happy huntings, MikeG -- - Web - http://www.galactic-stone.com Facebook - http://www.facebook.com/galacticstone Twitter - http://twitter.com/galacticstone Pinterest - http://pinterest.com/galacticstone - __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://three.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://three.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://three.pairlist.net/mailman/listinfo/meteorite-list
