[meteorite-list] Met Bulletin Update: Sahara 00293

From: Laurence Garvie <lgarvie_at_meteoritecentral.com>
Date: Fri, 23 Jan 2015 07:58:20 -0700
Message-ID: <7F081B7E-A023-4207-9E22-FAC2DBF106E6_at_cox.net>

Crystyl is a grad student in the School of Earth and Space Exploration at ASU. She is studying shock phases in meteorites, and by chance Sah 00293 has something very interesting in it (you can look up her LPSC abstract which will be online in a few weeks). In order for her LPSC abstract to be accepted, she had to first classify and then get the meteorite accepted by the NomCom.

Laurence Garvie
CMS
ASU

> ------------------------------
>
> Message: 6
> Date: Thu, 22 Jan 2015 18:30:02 -0500
> From: "Galactic Stone & Ironworks" <meteoritemike at gmail.com>
> To: Meteorite List <meteorite-list at meteoritecentral.com>
> Subject: [meteorite-list] Met Bulletin Update : Sahara 00293
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> Hi Bulletin Watchers,
>
> There is one new approval. I find it curious. It is an old Sahara OC
> found by Mr. Labenne fifteen years ago (2000). Crystylynda Fudge was
> the classifier. I have never heard this name before. I am just curious
> why this meteorite suddenly appeared out of obscurity to be approved
> today.
>
> Best regards and Happy Huntings,
>
> MikeG
>
> Link : http://www.lpi.usra.edu/meteor/metbull.php?code=61360
>
> Bulletin write-up :
>
> Sahara 00293
> (Sahara)
> Found: 2000
> Classification: Ordinary chondrite (L6)
>
> History: Reportedly collected in the same location as Sahara 98222.
>
> Physical characteristics: Chondrules largely integrated into matrix,
> difficult to discern in cut section. Abundant shock-induced melt veins
> and pockets.
>
> Petrography: Fine-grained recrystallized plagioclase throughout
> matrix, some grains up to 200 ?m. Abundant metal sulfides and troilite
> with trace native Cu. Evidence of minor planar deformation features in
> olivine. Ubiquitous opaque shock melt veins and associated dark blue
> ringwoodite and green wadsleyite.
>
> Geochemistry: (C. Fudge, ASU) EPMA: Fa24.8?0.1 FeO/MnO: 48.8?1.6 n=11;
> low-Ca pyroxene Fs20.9?0.3Wo1.6?0.2 FeO/MnO: 28.6?1.1 n=12; high-Ca
> pyroxene Fs8.4?0.2Wo44.4?0.1 FeO/MnO: 20.8?1.2 n=2
>
> Classification: Ordinary chondrite L6, S6, W2
>
> Specimens: 27.05 g and one thin section at ASU
>
>
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Received on Fri 23 Jan 2015 09:58:20 AM PST