Dear List Members,
Here is the example of related falls that I am familiar with. This is part
of the description I use for eBay auctions of NWA 4301:
NWA 4301 ~ Zakłodzie:
NWA 4301, an exceedingly rare Ungrouped Enstatite-rich Achondrite found in
Algeria in 2006 by nomadic tribesman. NWA 4301 is nearly identical to
Zakłodzie, both in mineral composition and terrestrial age, about 300 years
(The same scientist at NSF Arizona AMS Laboratory measured the terrestrial
age dates of both meteorites). If they had not fallen 3000 km apart, NWA
4301 would have been considered a pairing. While that is unlikely,
scientists agree they are most likely source launch-paired! The Total Known
Weight of NWA 4301 consists of a single 685 gram stone.
Close-up view of polished slice of NWA 4301 (depth of field = 2cm across):
http://www.lunarrock.com/nwa4301/nwa4301closeup.jpg
Scientists write:
“This meteorite [NWA 4301] is essentially a clone of Zakłodzie, for which…a
very young terrestrial age of several hundreds of years [was found] (even
though it is weathered to some extent). I presume that the terrestrial ages
of these two are analytically distinguishable, but it could still be that
they are launch-paired.”
“NWA 4301 seems much fresher than Zakłodzie…”
“I believe that the [terrestrial ages] are permissive of both stones being
part of the same fall, but landing 3000 km apart in Poland and Algeria. Of
course there is a very large uncertainty, so it does not prove it, but the
two meteorites are remarkably similar and different from anything else.”
<<
I find this case to be very interesting!
Best regards,
Greg
====================
Greg Hupe
The Hupe Collection
NaturesVault (eBay)
[email protected]
www.LunarRock.com
IMCA 3163
====================
Click here for my current eBay auctions:
http://search.ebay.com/_W0QQsassZnaturesvault
-----Ursprüngliche Nachricht-----
Von: [email protected]
[mailto:[email protected]] Im Auftrag von
Meteorites USA
Gesendet: Montag, 8. März 2010 03:04
An: [email protected]
Betreff: Re: [meteorite-list] Related Meteorite Falls 11 years apart?
BothHammers! Both L6 Olivine-hypersthene
I was going to stay closed mouth since I opened it a few hours ago and
got my theory handed back to me very matter-of-factly. However, a rain
drop is hardly a meteorite and does not orbit the Sun, unless of course
it somehow miraculously escapes the Earth's gravitational field. But
then it would freeze in deep space and would no longer be considered
rain now would it? I believe frozen water is called ice if I'm correct.
but then again wouldn't it melt once it got closer to the sun? I could
be wrong here so please point out if I am... I'm sure you will.
All the BS aside, I would venture a guess that if someone found two
meteorites of the same class 1.4 miles away from one another as cold
finds they would assume the area would be a strewnfield until proven
otherwise. This without of course taking into account any dating of the
stones.
Didn't I read a while back about asteroid-quakes? As asteroids near the
Earth newer material is brought to the surface. In other words, would an
asteroid's surface act as a shield against the cosmic rays to the
interior of the asteroid? Would this affect anything at all? Is ALL
material in any given asteroid the same age, or is this age determined
by the cosmic radiation levels within any given part? Does this take
into account other older and younger bodies impacting a parent body and
becoming part of that body? Is accretion real or a figment of scientific
world's imagination? Am I asking too many questions? ;)
I'm being facetious of course. Now, I'm assuming a lot of things here,
and call me an ass if you like, but at least I didn't sound like an ass
by slamming someone else on-list and insulting them by explaining what
rain is.
As far as I know a meteorite is made of stone or iron, or a mixture of
both and it comes from an asteroid, and these asteroids come from space
and all have orbits unless those orbits are perturbed by a larger body,
like which I have been apparently.
Regards,
Eric
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