[meteorite-list] Albareto

From: Jeff Grossman <jgrossman_at_meteoritecentral.com>
Date: Thu Apr 22 09:55:39 2004
Message-ID: <5.1.0.14.2.20020102075931.02507a90_at_pop3.norton.antivirus>

Olivine in Albareto was measured by Mason (1963) [GCA 27, 1011-1023] to be
Fa27 (The Catalogue of Meteorites and MetBase both contain an erroneous
value for Mason). Rubin (1990) [GCA 54, 1217-1232] confirmed Mason's data,
getting Fa26.6, as well as a Co content of kamacite of 14.4 mg/g. These
data by Rubin place Albareto near the dividing point between L and LL
chondrites, but Rubin placed it in the LL group. Trace element data of
Kallemeyn et al. (1989) [GCA 53, 2747-2767] also show Albareto to be
borderline between L and LL, but again, these authors placed it in
LL. Clayton (1991) [GCA 55, 2317-2337] measured O isotopes in
Albareto. His data place it safely in the LL field [d18O=+5.31,
d17O=+3.96]. Cosmic ray exposure data are consistent with both L and LL
groups.

In view of these data, I think that the LL classification is the safest
one. At worst, one could classify it along with Bjurboele as an L/LL
chondrite. I can't see it being called an L chondrite on the basis of any
recent published data.

-Jeff

At 04:25 PM 1/1/2002, Matteo Chinellato wrote:
>Hello all
>
>The unique text on the Albareto meteorite I have in my
>hands is of Paolo Gallitelli " Sulla Meteorite caduta
>in Albareto di Modena nel Luglio 1766 " Roma 1940 - 18
>pages, italian language. I am go in Modena University
>and I have received confirm Albareto is a L4
>chondrite. This is the unique informations I have.
>Regards
>
>
>Matteo
>
>--- Bernd Pauli HD
><bernd.pauli_at_lehrer1.rz.uni-karlsruhe.de> wrote:
> > Matteo Chinellato wrote:
> >
> > > Albareto is a L4 chondrite, ...
> >
> > > from the original text on the analysis of the
> > Albareto
> > > meteorite in italian I have, is confirm the L4
> > chondrite
> >
> > Thank you, Matteo, ... but I'd now like to see two
> > references:
> >
> > a) The original Italian analysis
> > [author(s), date, title, publication, etc.]
> >
> > b) Ursula's B. Marvin's reference.
> >
> > Which one is "more" recent and, thus, perhaps "more"
> > ultimate?
> >
> >
> > Best wishes,
> >
> > Bernd
> >
> > Show your support at the Red Cross Disaster Relief
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Dr. Jeffrey N. Grossman phone: (703) 648-6184
US Geological Survey fax: (703) 648-6383
954 National Center
Reston, VA 20192, USA
Received on Wed 02 Jan 2002 09:17:14 AM PST