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Curvature of gypsum crystals induced by growth in the presence of impurities

Published online by Cambridge University Press:  05 July 2018

Caterina Rinaudo ,
Marinella Franchini-Angela  and
Roland Boistelle
Caterina Rinaudo
Affiliation:
Dipartimento di Scienze della Terra, Via S. Massimo 24, 10123 Torino, Italy
Marinella Franchini-Angela
Affiliation:
Dipartimento di Scienze della Terra, Via S. Massimo 24, 10123 Torino, Italy
Roland Boistelle
Affiliation:
Centre de Recherche sur les Mécanismes de la Croissance Cristalline, Campus Luminy, Case 913, 13288 Marseilte Cedex 9, France
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Abstract

Gypsum crystals were grown at 25, 35, and 45 °C from solutions containing different ionic impurities (Mg2+, Na+, Cd2+). Curved gypsum crystals formed from the solutions enriched in magnesium or cadmium, whereas, in the presence of sodium, gypsum always grew undeformed. The mechanism of the curvature is described and an interpretation based on crystallographic considerations is given. Curvature is the result of impurity incorporation followed by crack formation and mechanical twinning which releases the internal stresses.

Keywords

gypsumcurved crystalsmechanical twinsimpurity absorption
Type
Mineralogy
Information
Mineralogical Magazine , Volume 53 , Issue 372 , September 1989 , pp. 479 - 482
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1989

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References

Baronnet, A. and Olives, J. (1983) Tectonophysics 91, 359-73.CrossRefGoogle Scholar
Bétekhtine, A. (1968) In Manuel de Minéralogie descriptive, Editions Mir, Moscow.Google Scholar
Currens, J. C. (1981) Rocks and Minerals 56, 93-7.CrossRefGoogle Scholar
De Jong, W. F. and Bouman, J. (1939) Z. Kristallogr. 100, 275-6.Google Scholar
De Michele, V. (1974) I. Guida Mineralogica d'Italia 2. Istituto Geografico de Agostini, Novara.Google Scholar
Franchini-Angela, M. and Rinaudo, C. (1989) Neues Jahrb. Mineral. Abh. 160, 105-15.Google Scholar
Kushnir, J. (1980) Geochim. Cosmochim. Acta 44, 1471-82.CrossRefGoogle Scholar
Nicolas, A. and Poirier, J. P. (1976) In Plasticity and solid state flow in metamorphic rocks, Wiley, New York.Google Scholar
Rinaudo, C., Franchini-Angela, M., and Boistelle, R. (1988) J. Cryst. Growth 89, 257-66.CrossRefGoogle Scholar
Shearman, D. J. and Orti Caho, F. (1976) Mere. Soc. Geol. Ital. 16, 327-39.Google Scholar
Smith, R. M. and Martell, A. E. (1976) In Inorganic complexes, Plenum, New York.Google Scholar
Whittaker, E. J. W. and Muntus, R. (1970) Geochim. Cosmochim. Acta 43, 945-56.CrossRefGoogle Scholar
Wooster, W. A. (1936) Z. Kristallogr. 94, 375-96.Google Scholar