[meteorite-list] The Newest and biggest Hungarian chondrite the Csátalja H4 S2 W2 is official

From: cbo <cbo_at_meteoritecentral.com>
Date: Tue, 24 Feb 2015 07:26:22 +0100
Message-ID: <000c01d04ffa$cf4af9c0$6de0ed40$_at_hu>

Dear List Members!

The newest and biggest Hungarian chondrite the Cs?talja H4 S2 W2 is official
in MetBull.

Direct link here:
http://www.lpi.usra.edu/meteor/metbull.php?code=61584

HISTORY OF METEORITE CSATALJA:
The meteorite was found in August 2012, near to Csatalja village,
South-Hungary while farm work, when out the stone while plowing a tractor.
The area is under agricultural cultivation.Two of the three years the farmer
doing deep plowing, when the plow go down 0.5 meters as well. Probably one
of those deep plowing up the surface of the meteorite and found it so in
2012. The find location was some km E of the village of Cs?talja at 46.006?
N, 18.991? E. Finder: Karoly Kiss tractor driver. Spar week after the
land-owner left to the Astronomical Observatory, Baja to director of
Observatory, Dr. Hegedus. He sent a sample was further analyzed in
University of Bratislava Dr. Juraj Toth and Dr. Szaniszl? B?rczi of
University of E?tv?s L?r?nd, Budapest. Soon after, alarmed by Dr. Toth that
this is real chondrite meteorite with about 15.8 kg TKW.
Later, a small piece Dr. Hegedus sent to the University of Pecs further
analization. They examined the piece and made thin section and X-ray
diffraction measurements.
The meteorite is a H4, S2, W2 chondrite (based on thin section and SEM
examination by Prof Anthony Irving, University of Washington). I have paid
and asked the classification.
This is the 9.th Hungarian meteorite (4 is doubtfull and historic). The main
mass currently is diplayed in Astronomical Observatory, Baja and later in
the hungarian NHM.
No more material on the market.
Recently the found area has closed for any meteorite-finders and any persons
because there is an archaeological site is licensed only for researchers.

Physical characteristics: A single brown, roughly equidimensional stone
originally weighing ~15.8 kg.
Comments: Rich in Fe-Ni grains inside, in some places unexpectedly large
ones. Outer surface has many weather-degraded regmaglypts.
Petrography: (A. Irving and S. Kuehner, UWS) The specimen consists of sparse
relatively small (0.4-2.1 mm) chondrules and partial chondrules in a finer
grained, recrystallized matrix rich in stained metal. Primary minerals are
olivine, orthopyroxene, clinopyroxene, sodic plagioclase, chromite,
merrillite, chlorapatite, troilite and kamacite (partially altered to iron
hydroxides)
Geochemistry: Olivine (Fa18.6-19.9), orthopyroxene (Fs15.8-16.3Wo1.1-1.2),
clinopyroxene (Fs5.7-5.8Wo45.6-46.4).
Classification: Ordinary chondrite, H4 (S2/4). Weathering grade is W2 by
Prof. Irving.

Further analizations: Recently a team with leading Dr. ?kos Kereszt?ri in
University of E?tv?s L?r?nd, Budapest is analizing 5 pcs Thin Sections of
Cs?talja H4 chondrite by polarizing-microscope, SEM and microprobe. He has
found many shocked and weathering altered zones and they has found into the
Cs?talja Ringwoodit and a very rare and highly shocked mineral, its name is
AKIMOTOITE also (just 6-7 meteorite contents Akimotoite!). These
contribitions of knowledge will be publised in a study in ICARUS in Spring
of this year.

Some parts of meteorite are heavy oxidized (limonite, hamatite?), heavy
shocked (stage 4!) and fractured with many shocked and filled by oxids
veins.
An other team of University of P?cs is anailizing the samples also. The
holder of Main Mass (BajaAO) going to make CRE analisys soon is ATOMKI,
Debrcen, Hungary. The studies soon will be publish in Conferences, Workshops
and in meteoritics related Scientific Journals.

So we are happy in Hungary:-)

A few slices and a Thin Sections available is very limited quantity here:
http://meteorites.eurodome.hu/csatalja.html


My NWA8255 H5 S2 W2 and NWA8256 L5 S2 W2/3 chondrite is also offical.

Best Regards!
Zsolt Kereszty
Hungary
IMCA#6251
Member of Meteoritical Society
Member of Hungarian Astronomical Society
Received on Tue 24 Feb 2015 01:26:22 AM PST