[meteorite-list] NWA 3099 (L/LL3) and why not 3.X ???

From: Tom aka James Knudson <knudson911_at_meteoritecentral.com>
Date: Thu Apr 22 10:32:47 2004
Message-ID: <008401c405f9$385b0020$c4cc43d8_at_malcolm>

Hello John and list, John is one of my favorite guys on the list, so please
do not think I am attacking him, I am not!!! I asked if Scientists could
have done something better for Portales Valley than H6 because they did not
want to take the time out to make a new classification for it and I got
attacked for asking.
  John asked if NWA 3099 was not given more than a LL3 because of budgets.
Kind of the same point as my Portales valley thing, scientist do not want to
go through extra trouble to go further in it's classification. So I have to
ask John, did you also get attacked for asking if scientists are not giving
it their all?
Thanks, Tom
peregrineflier <><
IMCA #6168
----- Original Message -----
From: <j.divelbiss_at_att.net>
To: Jeff Kuyken <jeff_at_meteoritesaustralia.com>
Cc: Meteorite List <meteorite-list_at_meteoritecentral.com>
Sent: Tuesday, March 09, 2004 5:43 AM
Subject: Re: [meteorite-list] NWA 3099 (L/LL3) and why not 3.X ???


> Jeff, Bernd and others:
>
> Great stuff guys, especially the pictures of these great unequilibrated
stones. Will we ever
> understand how these anomalies ever happened...probably not. But it is
sure is worth trying.
>
> Questions: I've often wondered why some of these stones are not evaluated
further to determine
> the level of feldspar change/metamorphism that grades this level of change
from the original
> material. Instead of simply stating it is an LL3...the grading goes
further to say it LL3.2,
> LL3.5, etc. If I remember right it is a measurement of the feldspar glass
illuminescence.
>
> 1. How/who decides when to this evaluation?
>
> 2. Is it really just a matter of available equipment in many cases...the
facility may not
> have the ability to do the test...so meteorites out of those institutions
are never beyond LL3.
>
> 3. Is it a cost issue for doing the test?? Seems to me that LL3's are
cheaper to buy than say LL3.5 or lower...yet I've looked at plenty of
awesome LL3's that rival some the others with the
> extra desingation or test.
>
> Maybe of the dealers that have stones evaluated can tell us why this test
is done or not.
> I'd like to see it done more often with beauties like NWA 3099, and NWA
1933. Why not is my question.
>
>
> John
>
>
>
>
>
>
>
>


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----
G'day all,
For those of you who purchased NWA 3099 or are just interested, I spoke with
Bernd over the past couple of weeks regarding this particularly remarkable
meteorite. Bernd had some interesting things to say it which are posted at
the end of the page here:
http://www.meteoritesaustralia.com/features/nwa3099.html
Cheers,
Jeff Kuyken
I.M.C.A. #3085
www.meteorites.com.au

Received on Tue 09 Mar 2004 12:08:59 PM PST