[meteorite-list] Tanezrouft 57 - Acfer 329

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From: meteoriteshow <meteoriteshow_at_meteoritecentral.com>
Date: Thu Apr 22 10:28:33 2004
Message-ID: <000001c39757$5323a620$93664152_at_monordinateur>

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Bonjour the List !

I propose the first beautiful 2mm thin slices of Tanezrouft 57 (C4 =
anomalous) plus another one showing many inclusions and 2 clasts, and =
some nice shock veined slices of Acfer 329 (L4/5 - W0). Have a look at =
them :
http://meteoriteshow.free.fr/meteoriteshow%20fra/pages%20navigation/piece=
s_en_vente-fra.html

Here are some details :
 a.. Tanezrouft 057 - 3.5g - Euros 380.00 (with a beautiful CAI)
 b.. Tanezrouft 057 - 3.8g - Euros 420.00 (nice chondrules and CAIs)
 c.. Tanezrouft 057 - 55.6g - Euros 3330.00 (2 different kinds of dark =
inclusions, many small CAIs, 2 clasts : a real dream !)
 d.. ACfer 329 - 5.2g - Euros 30.00 (shock veined)
 e.. ACfer 329 - 6.6g - Euros 40.00 (shock veined)
 f.. ACfer 329 - 13.9g - Euros 70.00 (shock veined)
Do not hesitate to send us an e-mail for further details. All our =
meteorites come with Certificate of Authenticity, and shipment is for =
free from 100 Euro orders.

Best Meteoritical Wishes.

Frederic & Christophe
www.meteoriteshow.com

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CLASSIFICATION :

Tanezrouft 057 25=B016'N-0=B009'E
Algeria
Found 2002 December 23
Carbonaceous chondrite (C4)
A large (5.4 kg), dark grey, moderately compact stone, lacking fusion =
crust was found by F. Beroud and C Boucher.
Mineralogy and classification (B. Devouard and J.L. Devidal, UBP ; B. =
Zanda and M. Denise, MNHNP).
Large chondrules (around 1 mm in diameter); matrix around 50% but =
locally more abundant (~70%), numerous irregular whitish
inclusions up to 3 mm, and occasional zoned CAls up to 17 mm. In =
addition, several large (up lo 2.5 cm} dark grey
inclusions, show a finer grained petrology, with no (or extremely rare} =
chondrules or CAIs. More of these fine-grained inclusions are visible at =
the surface of the hand sample. The meteorite is nearly equilibrated : =
olivines are around Fa30=B14 except for a few un-equilibrated chondrules =
; OPX range from Fs3 to Fs30, with a mean at Fs19. The groundmass is =
highly re-crystallized, with homogeneous olivine, orthopyroxene and =
plagioclase grains around 100 =B5m in size. The groundmass is texturally =
equilibrated ; although most grains seem to be porous. Magnetite is the =
dominant opaque mineral, associated with minor FeS, Ni-rich monsulfide, =
minor pentlandite and possibly pyrite. Outside chondrules, small =
magnetite grains and minute sulfide grains are scattered within the =
matrix. No metal was observed. However, iron hydroxides patches are =
visible, and metal or sulfides may be have been obliterated by =
terrestrial weathering. The numerous irregular inclusions retain a =
line-grained texture made of plagioclase and clinopyroxene that may be =
metamorphosed CAls. The overall characteristics of this meteorite are =
consistent with a C4 classification, with affinities to the CV oxidized =
subgroup and/or the CK group.
Specimens : type specimen, 110 g, MNHNP : main mass with finders

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<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
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<DIV>
<DIV>Bonjour the List !</DIV>
<DIV> </DIV>
<DIV>I propose the =
first beautiful=20
2mm thin slices of Tanezrouft 57 (C4 anomalous) plus =
another one=20
showing many inclusions and 2 clasts, and some nice shock veined slices =
of Acfer=20
329 (L4/5 - W0). Have a look at them :</DIV>
<DIV><A=20
href=3D"http://meteoriteshow.free.fr/meteoriteshow fra/pages =
navigation/pieces_en_vente-fra.html"><FONT=20
face=3D"Courier New"=20
size=3D2>http://meteoriteshow.free.fr/meteoriteshow%20fra/pages%20navigat=
ion/pieces_en_vente-fra.html</A></DIV>
<DIV> </DIV>
<DIV>Here are some details =
:</DIV>
<UL>
 <LI>Tanezrouft 057 - 3.5g - Euros =
380.00 (with=20
 a beautiful CAI)</LI>
 <LI>Tanezrouft 057 - 3.8g - Euros =
420.00 (nice=20
 chondrules and CAIs)</LI>
 <LI>Tanezrouft 057 - 55.6g - Euros =
3330.00 (2=20
 different kinds of dark inclusions, many small CAIs, 2 clasts : a real =
dream=20
 !)</LI>
 <LI>ACfer 329 - 5.2g - Euros 30.00 =
(shock=20
 veined)</LI>
 <LI>ACfer 329 - 6.6g - Euros 40.00 =
(shock=20
 veined)</LI>
 <LI>ACfer 329 - 13.9g - Euros =
70.00 (shock=20
 veined)</LI></UL>
<DIV>Do not hesitate to send us an =
e-mail for=20
further details. All our meteorites come with Certificate of =
Authenticity, and=20
shipment is for free from 100 Euro orders. Best Meteoritical=20
Wishes. Frederic & Christophe <A=20
href=3D"http://www.meteoriteshow.com">www.meteoriteshow.com</A></DIV>
<DIV>
<HR>
</DIV>
<DIV>
CLASSIFICATION :
Tanezrouft=20
057<SPAN=20
style=3D"mso-spacerun: =
yes">           &n=
bsp;           =20
25=B016’N-0=B009’E Algeria <SPAN=20
lang=3DEN-GB=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-ansi-language: =
EN-GB; mso-bidi-font-size: 14.0pt">Found=20
2002 December 23 Carbonaceous=20
chondrite (C4) A=20
large (5.4 kg), dark grey, moderately compact stone, lacking=20
fusion crust was found by F. Beroud and C Boucher. Mineralogy=20
and classification (B. Devouard and J.L. Devidal,=20
UBP ; B. Zanda and M. Denise, MNHNP). Large =
<SPAN=20
lang=3DEN-GB=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-ansi-language: =
EN-GB; mso-bidi-font-size: 14.0pt">chondrules=20
(around 1 mm in diameter); matrix around 50% but locally=20
more abundant (~70%), numerous irregular whitish inclusions=20
up to 3 mm, and occasional zoned CAls up to 17=20
mm. In addition, several large (up lo 2.5 cm} dark grey <SPAN=20
lang=3DEN-GB=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-ansi-language: =
EN-GB; mso-bidi-font-size: 14.0pt">inclusions,=20
show a finer grained petrology, with no (or extremely=20
rare} chondrules or CAIs. More of these fine-grained=20
inclusions are visible at the surface of the hand sample.=20
The meteorite is nearly equilibrated : olivines are around=20
Fa30=B14 except for a few un-equilibrated chondrules ; OPX=20
range from Fs3 to Fs30, with a mean at Fs19. The groundmass=20
is highly re-crystallized, with homogeneous olivine,=20
orthopyroxene and plagioclase grains around 100 =B5m in=20
size. The groundmass is texturally equilibrated ; although =
<SPAN=20
lang=3DEN-GB=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-ansi-language: =
EN-GB; mso-bidi-font-size: 14.0pt">most=20
grains seem to be porous. Magnetite is the dominant opaque=20
mineral, associated with minor FeS, Ni-rich monsulfide,=20
minor pentlandite and possibly pyrite. Outside chondrules,=20
small magnetite grains and minute sulfide grains are=20
scattered within the matrix. No metal was<SPAN=20
style=3D"FONT-VARIANT: small-caps"> observed. However,=20
iron hydroxides patches are visible, and metal or sulfides=20
may be have been obliterated by terrestrial weathering.=20
The numerous irregular inclusions retain a line-grained=20
texture made of plagioclase and clinopyroxene that may=20
be metamorphosed CAls. The overall characteristics of this=20
meteorite are consistent with a C4 classification, with affinities=20
to the CV oxidized subgroup and/or the CK group. Specimens=20
: type specimen, 110 g, MNHNP : main mass with finders</DIV></DIV></BODY></HTML>=

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Received on Mon 20 Oct 2003 05:46:24 PM PDT

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