The IAEA-CO1 was obtained from a slab of Carrara marble, freshly cut (in
1988, if I remember well). The slab derived from the quarry Carcaraia close
to Acquasanta, municipality of Gorfigliano, Northern Tuscany. This marble
is very white and compact, and is the best statuary marble. It consists
practically of CaCO3 100 % with little traces of Mg (if I remember well). I
will give more details in future if the relevant documentation will be
found again.

Roberto Gonfiantini


At 15.07 19/10/2004 +0200, you wrote:
>I have been trying to find information about the elemental composition
>of NBS-19 and other calcites like IAEA-CO1 without a lot of success. Can
>someone push me in the right direction?
>Willi
>
>--
>.....................................................................
>
>Willi A. Brand, Stable Isotope Laboratory      [log in to unmask]
>
>Max-Planck-Institute for Biogeochemistry
>
>Beutenberg Campus
>Hans-Knoell-Str. 10, 07745 Jena, Germany      Tel: +49-3641-576400
>P.O.Box 100164,      07701 Jena, Germany      Fax: +49-3641-57-70
>
>    http://www.bgc-jena.mpg.de/
>    http://www.bgc-jena.mpg.de/service/iso_gas_lab/
>
>.....................................................................