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

[Rob Lenssen]

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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