Quick
Search: 		  
advanced search
 GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help 
American Mineralogist RIMG advertisement
JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
American Mineralogist; June 1999; v. 84; no. 5-6; p. 725-732
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Baker, D. R.
Right arrow Articles by Freda, C.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation

Ising models of undercooled binary system crystallization; comparison with experimental and pegmatite textures

Don R. Baker, and Carmela Freda

McGill University, Earth and Planetary Sciences, Montreal, PQ, Canada
Universita di Roma "La Sapienza", Italy

Simulations of crystal growth in hydrous albite-quartz and albite-orthoclase systems were performed with the Jackson, Gilmer, and Temkin formulation of the Ising model. These simulations demonstrate that at 873 K (approximately 100 K undercooling), comb textures are produced when growth and diffusion probabilities are equivalent. If the growth probability is decreased to 0.1 times that of diffusion, discrete alternating zones of albite and quartz are produced; however, increasing the growth probability of 10 times that of diffusion results in an intergrowth of small domains of albite set in a quartz matrix. At near-liquidus temperatures (973 K), textures similar to those at 100 K undercooling are produced although the crystal-melt interfaces of the comb texture are smoother and the absolute value of the diffusion probability exerts a strong control on the texture, unlike results at 873 K. The textures produced in the simulations with a scale of 10 (super -7) m are similar to experimentally produced textures with scales of 10 (super -6) to 10 (super -4) . The fractal dimension of a comb-textured simulation has been measured and shown to be similar to the fractal dimension of a natural pegmatite with a meter-scale texture. This scaling similarity suggests that these simulations may provide insight into the formation of natural pegmatites despite the 5-7 orders of magnitude difference in scale.

This record provided courtesy of AGI/GeoRef.




This article has been cited by other articles:


Home page
 Can MineralHome page
D. J. Kontak
NATURE AND ORIGIN OF AN LCT-SUITE PEGMATITE WITH LATE-STAGE SODIUM ENRICHMENT, BRAZIL LAKE, YARMOUTH COUNTY, NOVA SCOTIA. I. GEOLOGICAL SETTING AND PETROLOGY
Can Mineral, June 1, 2006; 44(3): 563 - 598.
[Abstract] [Full Text] [PDF]

Home page
 Geological Society, London, Special PublicationsHome page
M. W. Jessell and P. D. Bons
The numerical simulation of microstructure
Geological Society, London, Special Publications, January 1, 2002; 200(1): 137 - 147.
[Abstract] [PDF]

Home page
 American MineralogistHome page
P.H. Benoit, C.P. Hartmetz, J.D. Batchelor, S.J.K. Symes, and D.W.G. Sears
The induced thermoluminescence and thermal history of plagioclase feldspars
American Mineralogist, July 1, 2001; 86(7-8): 780 - 789.
[Abstract] [Full Text] [PDF]

Home page
 Eur J MineralHome page
D. R. BAKER and C. FREDA
Eutectic crystallization in the undercooled Orthoclase-Quartz-H2O system: experiments and simulations
European Journal of Mineralogy, June 1, 2001; 13(3): 453 - 466.
[Abstract] [Full Text] [PDF]


JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2009 by Mineralogical Society of America