[meteorite-list] Met Bulletin Update : New Type Classification (E-Melt)

From: Galactic Stone & Ironworks <meteoritemike_at_meteoritecentral.com>
Date: Sat, 7 Jun 2014 13:09:10 -0400
Message-ID: <CAKBPJW9ksAO-044DZgkEmC1AjgoBu6sdr0UWxbaJVugvUo16Rw_at_mail.gmail.com>

Hi Jeff and List,

I'm not excited, just curious. Since it's a joint NIPR-Belgian
meteorite find, it will never show up on the private market anyway. I
was waiting for Jeff to chime in on this one and clarify the apparent
new class. With the sample being so small, and with the differences
between the classification peculiarities between different
institutions, I assumed it was a temporary classification - put the
meteorite under some heading until we figure out later where it
properly fits into the scheme.

I also left out the word "breccia" by mistake. The actual
classification in the Bulletin entry is "E-Melt Breccia".

Thanks for the clarification Jeff. Now I can go back to chasing
more-obtainable "unobtainables" like a Kakangari specimen. :)

Best regards,

MikeG

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On 6/7/14, Jeff Grossman via Meteorite-list
<meteorite-list at meteoritecentral.com> wrote:
> I wouldn't get too excited about this. Lots of enstatite meteorites
> (chondrites and achondrites) are melt rocks and melt breccias, and
> they've been described for decades by Alan Rubin and others, e.g.
>
> http://www.sciencedirect.com/science/article/pii/S0016703796003353
> http://onlinelibrary.wiley.com/doi/10.1111/j.1945-5100.1998.tb01654.x/abstract
>
> A-12057 is simply not yet grouped as EH or EL (you can bet it's one or
> the other), and has melt component in it like so many other E
> chondrites.  So don't take it as any kind of first.  It isn't, or at
> least there is no reason yet to think it is.
>
> One day, somebody will scrub the entire class and better classifications
> will be published in MetBull.  Until then, arm yourself with knowledge
> rather than the labels you find in simple catalogs.
>
> Jeff
>
> On 6/6/2014 6:14 AM, Graham Ensor via Meteorite-list wrote:
>> Yes, as Marcin said...probably just a fragment from an Enstatite which
>> is totally melt...as you get with some Chelly individuals...I dont see
>> how they can come up with a new type from just 4.5g like this???
>>
>> Graham
>>
>> On Fri, Jun 6, 2014 at 2:18 AM, Galactic Stone & Ironworks via
>> Meteorite-list <meteorite-list at meteoritecentral.com> wrote:
>>> Hi Bulletin Watchers,
>>>
>>> 437 meteorites from previous NIPR (Japan) expeditions to Antarctic
>>> have been approved for the Met Bulletin today. Buried in the hundreds
>>> of small OC's is an apparent new classification of E-Melt. This is the
>>> first and only meteorite classified as "E-Melt". Frustrated
>>> Type-Collectors, please meet Asuka 12057.
>>>
>>> Link : http://www.lpi.usra.edu/meteor/metbull.php?code=60054
>>>
>>> Best regards and happy huntings,
>>>
>>> MikeG
>>>
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Received on Sat 07 Jun 2014 01:09:10 PM PDT