[meteorite-list] Odp: Re: Re: Meteorite unclassified

Tue Jul 23 11:19:54 EDT 2024

Hello all,  now I know you have no idea about this area, most scientist who works with meteoriets, use Thin Sections, or small slices/partsices, without seeing a whole speciemn. Even if they make a classification still they see micro scale on meteorites. What I can recommend you is to more learn how to recognize meteorites than write stupid emails...   Of course I fully respect Alan Rubin...  All the best  Tomasz Jakubowskki 

        Dnia 23 lipca 2024 17:13 Rhett Bourland <rhett.bourland at gmail.com> napisał(a):

         Alan Rubin said he gets over half of his visual guesses wrong.  I guess you're more talented than the man who literally wrote the book on meteorite mineralogy.  Congratulations.  On Tue, Jul 23, 2024, 10:00 AM Tomasz Jakubowski <  illaenus at wp.pl > wrote:  Hello all,  I have to disagree with you. As a geologist / collector / hunter / scientist with around 23 years experience in recognize meteorites I can easily tell a type for example CC, it is quite easy texture differences between CC types like : chondrule size, matrix (vol%), chondrule 

(vol%), CAI's 

(vol%), metal 

(vol%). IF we spoke about CO type, it is pretty easy to say basis on chondrule size (CO is similar in chondrule size with CM, but CM have more matrix and slightly larger chondrules, that is in general, but 90% of collectors know differences between CM and CO on cut surface). That is based on cut surface, but whole specimens also look different, if we speak about NWA CO have characterised surfaces (especially if they are slightly sandblasted). We don't speak about classification, because no one writes NWA numbers. But commonly, recognizing a CO type is quite easy. I was working in science and that is completely don't harmful for science (harmful would be if someone would publish this in science paper, but that would not be possible because of reviews done before publishing).   If you can't tell that something is a meteorite without a test, well that is your private problem, but common, that is not a difficult.    All the best  Tomasz Jakubowski 

        Dnia 23 lipca 2024 15:31 Rhett Bourland via Meteorite-list <  meteorite-list at meteoritecentral.com > napisał(a):

         Educated guesses aren't classifications.  Nobody can do that.  I've got close to a couple hundred pieces in my collection that I've built up over the past 25 years.  I own classes of meteorites that most museums don't even have because the museums that I got them from told me where the other pieces were.  I can safely say that I have handled and seen even more in that time.  The IMCA got started in my living room. I wouldn't even call something a meteorite unless it got tested.  As Anne Black recently said, people guessing what they have and presenting it as such is nothing but harmful for the science and commercial trade of these rocks and that woman has seen and handled stuff that I can only dream of.  On Mon, Jul 22, 2024, 3:37 PM  <  mendy.ouzillou at gmail.com > wrote:  Rhett,   Our North African meteorite family has earned the right to make educated guesses, especially after they have proven themselves to be reputable dealers AND have examined the specimen. They have handled far more meteorites than most dealers and collectors. There is no surprise that they, and Mohamed in particular, can tell the difference between a CO and another type of meteorite. Mohamed was fully transparent and clearly stated that it is unclassified. There is nothing inauthentic about the posting.   I have no ulterior motive in responding to this post other than desiring respectful discourse.   Sincerely,   Mendy   From:  Meteorite-list <  meteorite-list-bounces at meteoritecentral.com >  On Behalf Of  Rhett Bourland via Meteorite-list  Sent:  Saturday, July 20, 2024 9:53 AM  To:  Benzaki Mohamed <  kemkemexpedition at gmail.com >  Cc:  Meteorite List <  Meteorite-list at meteoritecentral.com >  Subject:  Re: [meteorite-list] Meteorite unclassified   It's unclassified and yet you're calling it a CO?  That doesn't sound very authentic to me.   On Sat, Jul 20, 2024, 10:17   AM Benzaki Mohamed via Meteorite-list <  meteorite-list at meteoritecentral.com > wrote: Hi all members hop have a good day.  Everyone interested will be interested by a largeste co carbonaceous unclassified please contacte  me.all beste.  ______________________________________________  Meteorite-list mailing list   Meteorite-list at meteoritecentral.com  pairlist2.pair.net https://pairlist2.pair.net/mailman/listinfo/meteorite-list ______________________________________________ 
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