[meteorite-list] NWA 3133

From: Adam Hupe <raremeteorites_at_meteoritecentral.com>
Date: Mon Nov 15 17:02:26 2004
Message-ID: <00c201c4cb5d$3b515700$6401a8c0_at_c1720188a>

Hi Walter,

According to some scientists, Maybe so. I personally think ALH84001 is
probably the most important meteorite ever found. I guess it depends on how
you view importance.

All the best,

Adam

----- Original Message -----
From: "Walter Branch" <branchw_at_bellsouth.net>
To: "Adam Hupe" <raremeteorites_at_comcast.net>;
<meteorite-list_at_meteoritecentral.com>
Sent: Monday, November 15, 2004 1:58 PM
Subject: Re: [meteorite-list] NWA 3133


> Hi Adam,
>
> >NWA 3133 may be the most important
> >meteorite to have been found in 30 years
>
> More important than ALH84001?
>
> -Walter
>
> -----------------------------------------------------
> ----- Original Message -----
> From: "Adam Hupe" <raremeteorites_at_comcast.net>
> To: <meteorite-list_at_meteoritecentral.com>
> Sent: Monday, November 15, 2004 4:03 PM
> Subject: [meteorite-list] NWA 3133
>
>
> > Dear List,
> >
> > Several have been asking about NWA 3133. NWA 3133 is destined to be a
> > famous set of stones exclusive to the Hupe Collection. NWA 3133 was the
> > very first achondrite to plot on the CV mixing line using oxygen isotope
> > testing. It has been stated that NWA 3133 may be the most important
> > meteorite to have been found in 30 years and is destined to become a
> classic
> > among scientists. There are several abstracts in progress in regards to
> NWA
> > 3133 and one that is already complete. Here is a link to the completed
> > abstract:
> >
> > http://www.agu.org/meetings/fm04/fm04-sessions/fm04_P31C.html
> >
> > I have not seen anything formal on any other meteorite that would cause
me
> > conclude a pairing. Here is the classification submitted to the NomCom:
> >
> > Northwest Africa 3133
> > Morocco
> > Purchased 2004 March/August
> > Primitive achondrite (anomalous)
> > Several complete, dense, brown stones (total 2393 g) were purchased in
> > Tagounite by a Moroccan dealer for A. and G. Hup? (Hup?) in 2004 March
and
> > August. Classification and mineralogy (T. Bunch and J. Wittke, NAU; A.
> > Irving and S. Kuehner, UWS): equigranular texture of subhedral to
anhedral
> > grains with ~120? triple junctions; mean grain size = 0.28 mm. Moderate
> but
> > pervasive weathering (W2) has converted some metal and troilite to brown
> > iron hydroxides, which also coat grain boundaries. Mineral mode in
vol.%:
> > olivine 46, orthopyroxene 28, plagioclase 7, Cr-diopside 5,
Na-Mg-bearing
> > merrillite 4, metal (including associated hydroxides) 5, chromite 3 and
> > troilite 2. Highly equilibrated mineral compositions: olivine (Fa22.2
to
> > Fa22.6, FeO/MnO = 57 - 69), orthopyroxene (Fs18.6Wo2.8 to Fs19.2Wo2.1,
> > FeO/MnO = 38 - 49), diopside (Fs7.3Wo44.6 to Fs8.7Wo42.2, FeO/MnO = 21 -
> 33,
> > Cr2O3 = 0.56 to 0.82 wt.%, Al2O3 =1.21 to 1.74 wt.%), plagioclase
> > (An50.1Or2.5 to An53.5Or2.3), metal (Ni = 17.4 - 20.2 wt.%), chromite
> (TiO2
> > = 2.61 wt.%, Cr/(Cr+Al) = 0.73), troilite (Ni = 1.2 - 5.2 wt.%). Oxygen
> > isotopes: replicate analyses of an acid-washed whole rock sample by
laser
> > fluorination (D. Rumble, CIW) gave respectively ?18O = 3.06, 2.46, ?17O
> > = -1.75, -2.25, ?17O = -3.36, -3.54 per mil, and triplicate analyses of
an
> > acid-washed olivine-rich separate by laser fluorination (T. Larson and
F.
> > Longstaffe, UWO) gave respectively ?18O = 1.78, 0.92, 0.89, ?17O
> > = -2.91, -3.67, -3.62, ?17O = -3.84, -4.16, -4.08 per mil. All of these
> > oxygen isotope compositions plot on the CV3 mixing line, suggesting that
> > this achondritic meteorite has affinities with CV chondrites (Irving et
> al.,
> > 2004). Specimens: type specimens, 20.1 g, and one polished thin
section,
> > NAU; 40.3 g, and four polished thin sections, UWS; main mass, Hup?.
> >
> > Irving, A. J., Larson, T. E., Longstaffe, F. J., Rumble, D., Bunch, T.
E.,
> > Wittke, J. H. and Kuehner, S. M. (2004) A primitive achondrite with
> oxygen
> > isotopic affinities to CV chondrites: Implications for differentiation
> and
> > size of the CV parent body. Eos, Trans. Amer. Geophys. Union, 85(47),
> Fall
> > Meet. Suppl., Abstract P31C-02.
> >
> > I hope this clears things up,
> >
> > Adam
> >
> >
> >
> >
> > ______________________________________________
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> > Meteorite-list_at_meteoritecentral.com
> > http://six.pairlist.net/mailman/listinfo/meteorite-list
> >
>
>
>
Received on Mon 15 Nov 2004 04:51:15 PM PST