Quick
Search: 		  
advanced search
 GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help 
American Mineralogist house ad
JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
American Mineralogist; January 2001; v. 86; no. 1-2; p. 14-20
© 2001 Mineralogical Society of America
This Article
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow An erratum has been published
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
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 Web of Science (35)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Behrens, H.
Right arrow Articles by Jantos, N.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation

The effect of anhydrous composition on water solubility in granitic melts

Harald Behrens and Nicole Jantos

Institut für Mineralogie, Universität Hannover, Welfengarten 1, D-30167 Hannover, Germany

Correspondence: * E-mail: h.behrens{at}mineralogie.uni-hannover.de

The effect of anhydrous composition on the solubility of water in granitic melts was investigated experimentally at 800 °C and pressures from 50 to 500 MPa. Starting materials were ten natural obsidians from various localities worldwide and one re-melted leucogranite from the Himalayas.

Most of the experiments were performed in externally heated pressure vessels using Ni-NiO to buffer fO2. All samples were quenched isobarically after reaction for 120–336 h. Water contents of the resulting glasses were determined by Karl-Fischer titration.

The solubility data indicate that Na/K ratio and normative Qz content have only a minor effect on water solubility, whereas the (MCLNK-A)/O parameter, defined as 100·(2Mg + 2Ca + Li + Na + K–Al)/total oxygen, has a major effect. A parabolic law expressed as the mole fraction of H2O in the melt on a one-oxygen mole basis is proposed to describe the compositional dependence of water solubility in the range 50–200 MPa:


Formula

Minimum mole fractions of water in the melt (XH2O0) are 0.0521 at 50 MPa, 0.0757 at 100 MPa, and 0.1069 at 200 MPa. The equation fits water solubility data for granitic and phonolitic melts at 100 MPa and 200 MPa to within ±4% relative. The effects of anhydrous composition on water solubility are much more pronounced at 500 MPa than at lower pressures. Thus, the following expression was derived to represent the effects of anhydrous melt composition on water solubility at 500 MPa:


Formula




This article has been cited by other articles:


Home page
 Reviews in Mineralogy and GeochemistryHome page
G. Moore
Interpreting H2O and CO2 Contents in Melt Inclusions: Constraints from Solubility Experiments and Modeling
Reviews in Mineralogy and Geochemistry, January 1, 2008; 69(1): 333 - 362.
[Full Text] [PDF]

Home page
 ajsHome page
O. Schenk, J. L. Urai, and W. van der Zee
Evolution of boudins under progressively decreasing pore pressure A case study of pegmatites enclosed in marble deforming at high grade metamorphic conditions, Naxos, Greece
Am J Sci, September 1, 2007; 307(7): 1009 - 1033.
[Abstract] [Full Text] [PDF]

Home page
 Can MineralHome page
D. B. Clarke
ASSIMILATION OF XENOCRYSTS IN GRANITIC MAGMAS: PRINCIPLES, PROCESSES, PROXIES, AND PROBLEMS
Can Mineral, February 1, 2007; 45(1): 5 - 30.
[Abstract] [Full Text] [PDF]

Home page
 J PetrologyHome page
P. FERLA and C. MELI
Evidence of Magma Mixing in the 'Daly Gap' of Alkaline Suites: a Case Study from the Enclaves of Pantelleria (Italy)
J. Petrology, August 1, 2006; 47(8): 1467 - 1507.
[Abstract] [Full Text] [PDF]

Home page
 J PetrologyHome page
A. ACOSTA-VIGIL, D. LONDON, G. B. MORGAN VI, and T. A. DEWERS
Dissolution of Quartz, Albite, and Orthoclase in H2O-Saturated Haplogranitic Melt at 800{degrees}C and 200 MPa: Diffusive Transport Properties of Granitic Melts at Crustal Anatectic Conditions
J. Petrology, February 1, 2006; 47(2): 231 - 254.
[Abstract] [Full Text] [PDF]

Home page
 American MineralogistHome page
G. B. Morgan VI and D. London
Effect of current density on the electron microprobe analysis of alkali aluminosilicate glasses
American Mineralogist, July 1, 2005; 90(7): 1131 - 1138.
[Abstract] [Full Text] [PDF]

Home page
 American MineralogistHome page
I. S. E. Carmichael and I. S.E. Carmichael
The activity of silica, water, and the equilibration of intermediate and silicic magmas
American Mineralogist, October 1, 2004; 89(10): 1438 - 1446.
[Abstract] [Full Text] [PDF]

Home page
 J PetrologyHome page
A. ACOSTA-VIGIL, D. LONDON, T. A. DEWERS, and G. B. MORGAN VI
Dissolution of Corundum and Andalusite in H2O-Saturated Haplogranitic Melts at 800{degrees}C and 200 MPa: Constraints on Diffusivities and the Generation of Peraluminous Melts
J. Petrology, October 1, 2002; 43(10): 1885 - 1908.
[Abstract] [Full Text] [PDF]

Home page
 American MineralogistHome page
J. D. Webster and B. De Vivo
Experimental and modeled solubilities of chlorine in aluminosilicate melts, consequences of magma evolution, and implications for exsolution of hydrous chloride melt at Mt. Somma-Vesuvius
American Mineralogist, August 1, 2002; 87(8-9): 1046 - 1061.
[Abstract] [Full Text] [PDF]


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