[meteorite-list] Rob L's NWA 5764 LL6-L4, the first ever LL-L chondrite

From: Rob Lenssen <rlenssen_at_meteoritecentral.com>
Date: Wed, 29 Apr 2009 23:48:15 +0200
Message-ID: <043D12DF4A554E3681DD0C3AFA843453_at_EIGENAARNJEQJY>

Hi Matt,

As I understand, the large size and number of clasts, and the high
percentage of one type of ordinary chondrite material versus an other type,
made the difference here. But,... I think other List members will be far
more qualified to answer this one than me.

Best regards,
Rob


----- Original Message -----
From: <mail at mhmeteorites.com>
To: "Rob Lenssen" <rlenssen at planet.nl>;
<meteorite-list-bounces at meteoritecentral.com>;
<Meteorite-list at meteoritecentral.com>
Sent: Wednesday, April 29, 2009 11:25 PM
Subject: Re: [meteorite-list] Rob L's NWA 5764 LL6-L4,the first ever LL-L
chondrite


Hi Rob
Nice piece, but I would like a bit of clarification. I believe there have
been other chondrites like yours with a mix of different lithologies, but
simply classified as L6 or LL6 polymict breccias. What sets yours apart? I
am just trying to understand the differences here...
Thanks
Matt
------Original Message------
From: Rob Lenssen
Sender: meteorite-list-bounces at meteoritecentral.com
To: Meteorite-list at meteoritecentral.com
Subject: Re: [meteorite-list] Rob L's NWA 5764 LL6-L4,the first ever LL-L
chondrite
Sent: Apr 29, 2009 3:15 PM

Hello Bernd and List,

Thanks alot for all your congratulations!
Actually (luckily) it was not that hard a decision to cut Mike. Originally
it was fractured at that side :-).

The stone consist of cm-sized dark L4 clasts (Fa 25.58+0.53, Fs 22.2+0.31)
in LL6 (Fa 31.53?0.64, Fs 26.54+0.44) material.

Cheers,
Rob

----- Original Message -----
From: <bernd.pauli at paulinet.de>
To: <Meteorite-list at meteoritecentral.com>
Sent: Wednesday, April 29, 2009 10:25 PM
Subject: [meteorite-list] Rob L's NWA 5764 LL6-L4,the first ever LL-L
chondrite


> Hi Rob and List,
>
> First of all, sincere congrats on such an "exotic" classification. I am
> eagerly waiting
> for Jeff Grossman's comments! Well, slashes (e.g. L4/5) indicate
> transitional classes
> whereas hyphens (e.g. L5-6) indicate breccias. In other words, an LL6-L4
> chondrite
> seems to have an LL6 lithology and, well,...now it's really getting
> difficult especially
> because the Met.Bull. entry doesn't give any details,...is the L4
> lithology incorporated (embedded) into an LL6 matrix (?), is there a
> clear-cut boundary between an LL6
> lithology and an L4 lithology (something like this: left part of the stone
> LL6, right part
> L4) or are there L4 islands floating in an LL6 "sea" or, maybe vica versa?
>
> Curious minds just wanna know ;-)
>
> Best wishes,
>
> Bernd
>
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Matt Morgan
Mile High Meteorites
http://www.mhmeteorites.com
P.O. Box 151293
Lakewood, CO 80215 USA
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Received on Wed 29 Apr 2009 05:48:15 PM PDT