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@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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