[meteorite-list] Another LL3 of interest

From: Michael L Blood <mlblood_at_meteoritecentral.com>
Date: Mon Apr 25 14:16:30 2005
Message-ID: <BE92822B.1BB83%mlblood_at_cox.net>

Bernd,
        LOVE your run downs on my favorite rocks - those from space.
Wanny try lookin at this one I haven't cut yet?

http://community.webshots.com/photo/331010911/331012667IzQzQW

It is the remaining mass of 106g of an LL3.2. The TKW was 126g, with 20g
sent to Ted Bunch for analysis. It came out of Africa about 2 or 3 years
ago, so there won't be any "paired" specimens coming after it. Ted Bunch
described it as: NWA 2769 126 1 LL3.2 S2 W2
1-37.2; Cr2O3 ? 0.04 ? 0.67 wt %
Only some of which I understand. I got the following:
NWA 2769 is the name
126 is the TKW
1 is the number of specimens
LL3.2 is the classification, which I think is pretty rare - (you know how
many?)
S2 = shock grade 2
W2 =weathering grade 2,
but the rest is a bit cryptic.... Sure is PRETTY!
        Any of your expertise would be appreciated and enjoyed.
        Best wishes, Michael
        

on 4/25/05 8:21 AM, bernd.pauli_at_paulinet.de at bernd.pauli@paulinet.de
wrote:

>> This is sort of cool and unusual looking. Thought
>> somebody might like to see some photos:
>
>> http://www.meteoriteshop.com/nwa2766.html
>
> Hello Dean and List,
>
> Congratulations on having acquired this extraordinary LL3.9
> and on having it classified. Now, what's so cool about it ?
>
> 1) There are only four LL3.9 chondrites (as far as I know):
> - Bo Xian - DaG 180
> - HaH 093 - NWA 083
>
> 2) The large olivine Fa-range of Fa24 - Fa29, which is comparable
> only to NWA 083 (Olivine Fa28.4 ? 5.0) - according to Met.Bull.
> 85, 2001 July, 083 was purchased by M. Farmer and M. Cotting-
> ham in 8/2000 and the main masses are (still?) with the buyers.
>
> 3) It seems to be unpaired with 083 because of the differing shock
> and weathering stages: S5 - W1 for NWA 083 / S2 - W2 for Dean's.
>
> 4) But the weirdest thing, if I got that right,... would be those barred
> olivine chondrules containing FeS (troilite) either incorporated into
> the chondrule bars or lining them (or interstitial), or maybe troilite
> is present as chondrule rims - if the latter is the case, your meteorite
> and the Antarctic L3 chondrite ALHA79045 would be the only ones in which
> such chondrules have been found to date.
>
> It is not unusual to find FeS in the surrounding matrix but quite rare
> to find troilite inside barred chondrules. I have never heard about
> that before, so again sincere congrats on this "goodie".
>
> Any comments?
>
> Best regards,
>
> Bernd
>
> To: deanbessey_at_yahoo.com
> meteorite-list_at_meteoritecentral.com
>
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--
"You and I do not see things as they are. We see things as we are."
     -Herb Cohen
--
If a million people say a foolish thing, it is still a foolish thing.

Received on Mon 25 Apr 2005 02:16:59 PM PDT