Hi Alanj, list,
From my files, NWA 2999 has quite many pairings.
Here is my general write up for this meteorite
with a compilation of its recognized pairings
(updated 2009 so possibly not complete):
---------------------
NWA 2999 (Morocco, Angrite), found 2004.
Purchased Tagounite (G. Hupé). TKW: 1...@312 g.
Angrite with plutonic texture as Angra dos Reis.
Mercury origin questioned but not conclusive (Weir).
(Note 1: G. Hupé had all the 12 fragments
analyzed, which is a sign of a serious work)
Paired with NWA 3158 (1...@681 g), NWA 3164 (4...@928
g), NWA 4569 (m...@484 g), NWA 4662 (1...@62 g), NWA
4877 (1...@1000 g), NWA 4931 (2...@2140 g) and
NWA 6291 (1...@250 g). Cumulated tkw: 6...@5937 g.
(Note 2. Weir suggests NWA 2836 is also paired
but the Met. Bull database report the type of NWA 2836 as being LL3.7)
----------------------
Best to all,
Zelimir
At 17:45 28/09/2010, Shawn Alan wrote:
Adam wrote:
***********************************************************************************
This issue is not unique to NWA meteorites. The same thing could be said for
Antarctic or other desert finds. Yes, Antarctica is a desert. The same issue
applies to falls. How much Allende is really out
there? Nobody knows for sure,
the same can be said for Murchison. You can make
the same claim for just about
any fall.
***********************************************************************************
Adam the difference between NWAs and all the
other falls is that NWA nobody knows where the
strewn fields are. As for the rest, there is
data on strewn fields and correct documentation
that is used to asses the fall or find.
But with a NWA I find that people say that only
buy my NWA because its the real deal and the
pairs are inferior. The problem with that is
with NWAs are collected and through out the
months or year the same meteorite gets recycled
back to dealers and in a since every NWA stone
has to be classified cause of the collection process.
Good example is NWA 2999, I think this meteorite
has 2 other pairings if not more and think how
many pairs it will have in a few years from now?
And another good example is NWA 5400 which could
have a few pairs, which are very likely.
Now when people bank of there NWA as being rare
cause of low TKW it seems that it this could be
misleading cause of the circumstances that NWAs
present to science and they way they are collected.
Shawn Alan
IMCA 1633
eBaystore
http://shop.ebay.com/photophlow/m.html?_nkw=&_armrs=1&_from=&_ipg=&_trksid=p4340
[meteorite-list] NWA 6292 (BRA) IS paired to NWA
5400 !Adam Hupe raremeteorites at yahoo.com
Tue Sep 28 09:22:26 EDT 2010
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Shawn wrote:
*****************************************************************
Now the slight problem I have with NWA's is that
you really don't know how much
of that stuff is out there. That can work in your favor and against you. So
lets say you found an NWA and its about 1000g and you get it tested and its a
new NWN. Now you can say its rare because there is only 1000g, but do you
really know that for sure? From what I have seen, its not the case, and NWAs
keep getting paired with each other more time
then not.... I think that's why I
tend to stay away from NWA's for that reason and others.
****************************************************************
This issue is not unique to NWA meteorites. The same thing could be said for
Antarctic or other desert finds. Yes, Antarctica is a desert. The same issue
applies to falls. How much Allende is really out
there? Nobody knows for sure,
the same can be said for Murchison. You can make
the same claim for just about
any fall. I have seen collectors financially
burned on falls many times, myself
among them. I have lost more value by collecting new falls than I have
collecting finds. This is why I tend to stay away from new falls. The price
drops off sharply within a few months once the initial excitement disappears.
I lost a small fortune on New Orleans and Claxton by letting the market
determine the value by putting them up for auction with no reserves.
Happy Hunting, Long live the finds because
without them we would have no lunar
meteorites,
Adam
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Hello Greg S and Listers,
Now the slight problem I have with NWA's is that
you really don't know how much of that stuff is
out there. That can work in your favor and
against you. So lets say you found an NWA and
its about 1000g and you get it tested and its a
new NWN. Now you can say its rare because there
is only 1000g, but do you really know that for
sure? From what I have seen, its not the case,
and NWAs keep getting paired with each other
more time then not.... I think that's why I tend
to stay away from NWA's for that reason and
others. Plus it seems that every meteorite is
unique in its own right and some bank off that
uniqueness and rarity to pump up the price in
the NWA market. But once more is found, that
type isn't that rare anymore, so that's why I
stick with the historic falls, cause that event
can only happen once and there is a rich history
and legacy to back up that meteorite.
Also the NWA 5400 is speculated to have a
connection with Earth. Now in my own opinion if
this was the find of the century, wouldn't you
think there would be more research papers
written about this monumental find that some
people praise it to be? All I can find are 2
papers and the second paper doesn't even seem
that promising. Good example is Almahata Sitta.
That meteorite has been around since NWA 5400
and there is so much information and papers upon
papers about this meteorite, and the research
hasn't stop, but for the NWA 5400, its is a
trickle, 2 papers whats up with that? Again, the
evidence isnt there and a swashy thought out
theory, which other theories have been brough up
about the NWA 5400 and where it came from, more evidence please.
But at the end of the day people have their
reasons why they collect and some are drawn to
classifications and others to historic falls.
The good thing for any collector is to do
research and learn what they are going to buy
before they buy it. Also they learn alot more
about meteorites in the process and gain a since
of understanding of where meteorites came to be.
If any one has the time, check out this link
below, its a great paper written by Ursula B.
Marvin, explaining the beginning of meteorites
from a historical and scientific perspective.
http://adsabs.harvard.edu/full/1996M%26PS...31..545M
Shawn Alan
IMCA 1633
eBaystore
http://shop.ebay.com/photophlow/m.html?_nkw=&_armrs=1&_from=&_ipg=&_trksid=p4340
[meteorite-list] NWA 6292 (BRA) IS paired to NWA
5400 !Thunder Stone stanleygregr at hotmail.com
Mon Sep 27 18:48:32 EDT 2010
Previous message: [meteorite-list] NWA 6292 (BRA) IS paired to NWA 5400 !
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Wow - this is making my head spin. It is my
understanding that the O isotope data is
necessary to show the relationship to the early
earth-type rocks; it has to fall on the TFL. I
would think this is necessary to prove a
"pairing" to NWA 5400. Until then, it is not
100% certain. The fact that NWA 6292 IS paired
to 5400 suggests that there could be more of this unique meteorite out there.
Just my thoughts,
Greg S.
----------------------------------------
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