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

[Rob Lenssen]

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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