[meteorite-list] The San Pedro de Urabá meteorite fall is approved (Feb 16, 2017, Colombia)

From: Paul Kurimsky <kd7qk_at_meteoritecentral.com>
Date: Sat, 9 Jun 2018 21:59:50 -0700
Message-ID: <8B3F8AF2-430D-4B99-B78F-E8EDA86DD857_at_flash.net>

Nice!

Sent from my iPhone

> On Jun 8, 2018, at 8:00 PM, Michael Farmer via Meteorite-list <meteorite-list at meteoritecentral.com> wrote:
>
> This is a gorgeous meteorite. I cut a few grams off for ASU and I have 4 slices and partslices totaling about 50 grams, and that?s it. The mass stays intact
> Michael Farmer
>
>> On Jun 8, 2018, at 12:45 PM, Galactic Stone & Ironworks via Meteorite-list <meteorite-list at meteoritecentral.com> wrote:
>>
>> The San Pedro de Urab? meteorite fall from February 2017 has been
>> approved and published in the Met Bulletin :
>>
>> San Pedro de Urab?
>> 8?16?44.39"N, 76?22?41.67"W
>> Antioquia, Colombia
>> Confirmed fall: 16 Feb 2017
>> Classification: Ordinary chondrite (L6)
>>
>> History: At 5:30 pm local time on 16 February 2017, a large fireball
>> with sonic booms was observed in northern Colombia. A meteorite
>> subsequently impacted near Mr. Orlando Cuevas on the edge of a soccer
>> field in San Pedro de Urab?, Turbo district, Antioquia State,
>> Colombia. The event was widely reported in the local media. Two other
>> stones are known to have fallen, one much larger than the one that was
>> collected in the soccer field, but their whereabouts are unknown.
>> Michael Farmer acquired the 3768 g stone from Mr. Cuevas.
>>
>> Physical characteristics: Single regmaglypted stone covered with matte
>> black fusion crust. Interior is a light greenish-gray and friable. Cut
>> surface shows poorly defined chondrules and even distribution of small
>> metal/troilite grains. Only a single thin shock vein is visible.
>>
>> Petrography: SEM observation of a polished mount shows scattered
>> poorly defined chondrules (BO, RP, and PO) largely integrated with the
>> matrix. All silicates heavily fractured. Feldspar grains typically >50
>> ?m, with many around 100 to 200 ?m. Troilite anhedral and dominantly
>> single crystal to 400 ?m. Rare anhedral Ca-Na-Mg phosphates to 60 ?m.
>> Chromite to 600 ?m is anhedral to subhedral and heavily fractured.
>> Three Fe-Ni metal types present: kamacite, dominantly single crystal
>> (to 0.5 mm) with a frosty etch and weakly defined Neumann bands;
>> tetrataenite, rare, commonly contiguous to kamacite; and, equant
>> Ni-zoned grains with Ni-rich rims and dark-etched cores, some showing
>> kamacite spindles. Native Cu is rare and occurs as <10 micron grains
>> at kamacite/troilite boundary. Scattered and rare melt pockets to 60
>> ?m.
>>
>> Geochemistry: Olivine Fa25.1?0.3, FeO/MnO=47.6?1.8, n=9; low Ca
>> pyroxene Fs21.4?1.2Wo1.5?0.2, FeO/MnO=28.4?1.3, n=10; Feldspars
>> Or13.4?0.3Ab67.3?67.3?0.5, n=3 and Or5.4?0.1Ab84.4?0.02, n=2.
>>
>> Classification: Ordinary chondrite L6, S3, W0
>>
>> Specimens: 32 g at ASU. Main mass with MFarmer.
>>
>> Link - https://www.lpi.usra.edu/meteor/metbull.php?code=67598
>>
>> 21st Century Witnessed Falls - http://galactic-stone.com/pages/falls
>>
>>
>> --
>> ---------------------------------------------------------------------------
>> Galactic Stone & Ironworks : www.galactic-stone.com
>> ---------------------------------------------------------------------------
>> ______________________________________________
>>
>> Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com
>> Meteorite-list mailing list
>> Meteorite-list at meteoritecentral.com
>> https://pairlist3.pair.net/mailman/listinfo/meteorite-list
>
> ______________________________________________
>
> Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com
> Meteorite-list mailing list
> Meteorite-list at meteoritecentral.com
> https://pairlist3.pair.net/mailman/listinfo/meteorite-list
Received on Sun 10 Jun 2018 12:59:50 AM PDT


Help support this free mailing list:



StumbleUpon
del.icio.us
reddit
Yahoo MyWeb