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
<[email protected]> 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 < [email protected] > 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 <
[email protected] > 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 <
[email protected] > 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
< [email protected] > On Behalf Of Rhett
Bourland via Meteorite-list Sent: Saturday, July 20, 2024 9:53 AM To:
Benzaki Mohamed < [email protected] > Cc: Meteorite List <
[email protected] > 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 <
[email protected] > 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.
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