Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-26T02:58:03.608Z Has data issue: false hasContentIssue false
  • English
  • Français

Ontogeny of baryte crystals grown in a porous medium

Published online by Cambridge University Press:  05 July 2018

Manuel Prieto ,
Andrew Putnis ,
Jose Arribas  and
Lurdes Fernandez-Diaz
Manuel Prieto
Affiliation:
Departamcnto de Geologia, Universidad de Oviedo, 33005-Oviedo, Spain
Andrew Putnis
Affiliation:
Department of Earth Sciences, University of Cambridge, Cambridge CB2 3EQ, England
Jose Arribas
Affiliation:
Departamento de Cristalografia y Mineralogia, Universidad Complutense, 28040-Madrid, Spain
Lurdes Fernandez-Diaz
Affiliation:
Departamento de Cristalografia y Mineralogia, Universidad Complutense, 28040-Madrid, Spain
Get access Rights & Permissions [Opens in a new window]

Abstract

The development of the morphology of baryte crystals grown in a silica gel medium is related to the changes in supersaturation. Nucleation occurs when the supersaturation in the system exceeds a threshold value which depends on the supersaturation rate, i.e. the rate at which the supersaturation is changing at the nucleation site. During growth the supersaturation decreases, although a high level of supersaturation is maintained throughout. These experimental results compare well with the morphological development predicted from theoretical models based on the periodic bond chain theory. The ontogeny of natural harytes corresponds, in considerable detail, to the experimental observations made here and strongly suggests that similarly high supersaturations have prevailed in nature. This correspondence indicates that the technique of crystal growth in a porous silica gel medium provides a good experimental model of studying natural growth processes.

Keywords

barytemorphologycrystal growth
Type
Research Article
Information
Mineralogical Magazine , Volume 56 , Issue 385 , December 1992 , pp. 587 - 598
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1992

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Dowty, E. (1976) Crystal structure and crystal growth: I. The influence of internal structure on morphology. Amer. Mineral., 61, 448–59.Google Scholar
Dowty, E. (1980). Computing and drawing crystal shapes. Ibid., 65, 465-71.Google Scholar
Garcia-Ruiz, J. M. (1986) Growth history of PbS single crystals at room temperature. J. Crystal Growth, 75, 441–53.CrossRefGoogle Scholar
Grigorie'v, D. P. (1965) Ontogeny of Minerals. Israel Program for Scientific Translations, Jerusalem.Google Scholar
Hartman, P. (1987). Modern PBC theory. In Morphology of crystals (I. Sunagawa ed.). Terra Scientific Publishing Company, Tokyo, 269–319.Google Scholar
Hartman, P. and Bennema, P. (1980). The attachment energy as habit controlling factor. J. Crystal Growth, 49, 145–56.CrossRefGoogle Scholar
Hartman, P. and Heijnen, W. M. M. (1983). Growth mechanism of a crystal face for which more than one surface structure is possible. Ibid., 63, 261-4.CrossRefGoogle Scholar
Hartman, P. and Perdok, W. G. (1955a). On the relations between structure and morphology of crystals. I. Acta Cryst., 8, 49–52.CrossRefGoogle Scholar
Hartman, P. (1955b). On the relations between structure and morphology of crystals. II. Ibid., 8, 521-524.CrossRefGoogle Scholar
Hartman, P. (1955c) On the relations between structure and morphology of crystals. Ill. Ibid., 8, 525-9.CrossRefGoogle Scholar
Hartman, P. and Strom, C. S. (1989) Structural morphology of crystals with the baryte (BaSO4) structure: a revision and extension. J. Crystal Growth, 97, 502–12.CrossRefGoogle Scholar
Henisch, H. K. (1989) Crystals’ in gels” and Liesegang's rings. Cambridge University Press.Google Scholar
Hochella, M. F. and White, A. F. (eds.) (1990) Mineral-water interface geochemistry. Reviews in Mineralogy, 23. Mineralogical Society of America.CrossRefGoogle Scholar
Kuroda, J. W., Irisawa, T. and Ookawa, P. (1987) Transition from polyhedral to dendritic morphology. In Morphology of crystals (1. Sunagawa, ed.). Terra Scientific Publishing Company, Tokyo, 269–319.Google Scholar
Morse, J. W. and Casey, W. H. (1988) Ostwald processes and mineral paragenesis in sediments. Amer. J. Sci., 288, 537–60.CrossRefGoogle Scholar
Prieto, M., Fernandez-Diaz, L., and Lopcz-Andres, S. (1989) Supersaturation evolution and first precipitate location in crystal growth in gels: application to barium and strontium carbonates. J. Crystal Growth, 98, 447–60.CrossRefGoogle Scholar
Prieto, M., Fernandez-Diaz, L., and Lopcz-Andres, S. Putnis, A., and Fernandez-Diaz, L. (1990) Factors controlling thc kinetics of crystallisation: Supersaturation evolution in a porous medium. Application to baryte crystallisation. Geol. Mag., 127, 485–95.CrossRefGoogle Scholar
Prieto, M., Fernandez-Diaz, L., and Lopcz-Andres, S. Fernandez-Diaz, L., and Lopez-Andres, S. (1991) Spatial and evolutionary aspects of nucleation in diffusing-reacting systems. J. Crystal Growth, 108, 770–8.CrossRefGoogle Scholar
Seager, A. F. (1959) The morphology of the baryte group. Mineral. Mag., 32, 63–86.Google Scholar
Seager, A. F. and Davidson, W. F. (1952). Changes in habit during the growth of baryte crystals from the north of England. Ibid., 29, 885-94.CrossRefGoogle Scholar
Sunagawa, I. (1981) Characteristics of crystal growth in nature as seen from the morphology of mineral crystals. Bull. Mineral., 104, 81-7.Google Scholar
Sunagawa, I. (1987) Morphology of minerals. In Morphology of crystals (I. Sunagawa, ed.). Terra Scientific Publishing Company, Tokyo, 507-87.Google Scholar
Tassoni, D., Riquet, J. P., and Durand, F. (1978) Recherche des chaines periodiqeus de liaisons par ordinateur. Acta Cryst., A34, 55-50.CrossRefGoogle Scholar