Seyed Shekarforoush wrote:
>
> Does anyone know of a reference or references that give the fractionation
> factors for 13C between siderite(FeCO3) and a carbonate solsution?
> Thanks
> Seyed Shekarforoush

Check the following references:

Rosenbaum - Sheppard, Geochim. Cosmochim Acta 50, 1986, 1147-1150

Carothers - Adami - Rosenbauer, Geochim. Cosmochim. Acta 52, 1988,
2445-2450
--
Dr. Vratislav Hurai
Dept. of Isotope Geology, Geological Survey,
Mlynska dolina 1, 817 04  Bratislava, Slovakia
e-mail: [log in to unmask], tel.: 004217-3705233, fax: 004217-371940