Biblioteca de la Universidad Complutense de Madrid

Cd2+ en calcita: Cristalización de la solución sólida (Cd,Ca)C03

Impacto



Fernández González, Ángeles y Prieto Rubio, Manuel y López Andrés, Sol y Putnis, Andrew (1996) Cd2+ en calcita: Cristalización de la solución sólida (Cd,Ca)C03. Geogaceta, 20 (7). pp. 1546-1549. ISSN 0213-683X

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Resumen

The complete series of the otavite-calcite solid has been synthesized by counter diffusion of
CdClz + CaClz and CaCO] through a column of silica hydrogel. In this system there is a strong preferential
partitioning of Cd in the solid phase, and only a very narrow range of aqueous phase compositions can
coexist in equilibrium with intermediate solid solutions, i.e., the (Cd, Ca)C03 solid solution tend to
crystallize from aqueous solutions in a bimodal way. At high supersaturations, the range of aqueous
solutions from which intermediate solid solutions can nucleate expands, but the bimodal effect remains.
This bimodal behaviour accounts for the development of high gradient composistional zoning and
oscillatory zoning during the growth process.


Tipo de documento:Artículo
Palabras clave:Solid solution, Zoning, Oscillatory zoning, Crystal growth, Calcite, Otavite
Materias:Ciencias > Geología > Cristalografía
Código ID:14886
Depositado:18 Abr 2012 11:53
Última Modificación:18 Abr 2012 11:53

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