[meteorite-list] AD: Isheyevo - New bencubbinite from Russia

From: Sergey Vasiliev <petrovich_at_meteoritecentral.com>
Date: Sun May 29 15:34:30 2005
Message-ID: <GPELJADEBLKLMICNJDBLEEDEEFAA.petrovich_at_sv-meteorites.com>

Hello List,

Just a short advertisement about new bencubbinite Isheyevo.
I have a big slice for sale on commission for the owner of the main mass.
Thin and great cut.
Very, very unusual bencubbinite!

Please take a look here:
http://sv-meteorites.jodoshared.com/meteorite.asp?name=Isheyevo

Several thin end cuts are available also at $75/g.

Sergey Vasiliev
http://www.sv-meteorites.com

-----------------------------------------------------------------------

Info from the Met Bull #89:

Isheyevo ~ 53?37?N; 56?20?E
Bashkortostan, Russia.
Found 2003, October
Carbonaceous chondrite (bencubbinite)
One stone, weighing 16 kg, was found by a tractor driver in a
field during harvest carrying in the Ishimbai region of
Bashkortostan, close to the Isheyevo village. A small piece of the
meteorite was issued to the Vernadsky Institute by Kazakov D.A.,
and Polozkov A.G, September 2004. Mineralogy and
classification (Ivanova M.A. Vernad., Ulianov A.A. MSU).
Fusion crust is well developed, dark brown. The meteorite
consists of FeNi metal grains, C, POP, rare BO chondrules (0.02-
1 mm in size), chondrule fragments, CAIs, and matrix lumps.
FeNi metal comprises from 50 to 70 vol%, and contains 4.2-8.4
wt% Ni, 0.2-0.5 wt% Co, and 0.03-0.6 wt% Cr; Co/Ni ratio is
approximately solar. CC chondrules don't contain any FeNi metal
grains, they are Mg-rich, and consist of pyroxene-rich
cryptocrystalline material. Olivine, Fa2.5, rare FeO-rich olivines,
Fa10-38 ; pyroxene, Fs2.1Wo1.7 , FeO-rich pyroxene, Fs8-12Wo0.8-1.8;
troilite is Cr-rich, 2.5 wt% Cr. INAA data for a 20 mg chip: 2.74
wt.% Ni; 717 ppm Co; 2608 ppm Cr, 8.2 ppm Sc, and 1.59 ppm
Ir. Petrological type 3; shock stage, S1; weathering grade, W1.
Specimens: a type specimen, 24.3 g, and two sections, Vernad;
main mass with anonymous finder.



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Received on Sun 29 May 2005 03:34:22 PM PDT