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The hydrogen isotope fractionation between kaolinite and water

Liu, Kon-Kee and Epstein, Samuel (1984) The hydrogen isotope fractionation between kaolinite and water. Chemical Geology, 46 (4). pp. 335-350. ISSN 0009-2541. https://resolver.caltech.edu/CaltechAUTHORS:20131031-085428697

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Abstract

Hydrogen isotope fractionation factors between kaolinite and water were determined at temperatures between 200° and 352°C. Five-gram samples of kaolinite were heated in contact with 8-mg samples of water in sealed glass reaction tubes. Under these conditions the approach to equilibrium with time will be reflected primarily in the change of the δ D in the water. Also the δ D of the hydrogen in the kaolinite will be relatively constant, subject to minor corrections. About seventy sealed vessels were heated for various times at various temperatures. During four months of heating, ∼25% of kaolinite hydrogen exchanged with the water at 200°C, whereas 100% exchanged at 352°C. The α-values were estimated assuming equilibrium between exchanged kaolinite and water. The 10^3lnα-values are estimated to be −20, −15, −6 and +7 for 352°, 300°, 250° and 200°C, respectively, which are in approximate agreement with reported values previously determined at 400°C using conventional methods as well as those estimated from kaolinite in hydrothermally active systems. The curve representing the relationship between the hydrogen isotope fractionation factor for the kaolinite-water system and temperatures between 400° and 25°C is not monotonic but rather has a maximum at 200°C.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/0009-2541(84)90176-1DOIArticle
Additional Information:© 1984 Elsevier Science Publishers B.V. Received April 9, 1984; revised and accepted August 8, 1984. The authors wish to acknowledge financial support of N.S.F. Grant No. EAR-8313086 and technical support of Vic Nenow. We appreciate valuable discussions with Dr. Y.N. Shieh. One of the authors (K-K.L.) wishes to acknowledge the opportunities granted by the Academia Sinica (Taipei) to return to Caltech to finish this manuscript.
Funders:
Funding AgencyGrant Number
NSFEAR-8313086
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Caltech Division of Geological and Planetary Sciences4026
Issue or Number:4
Record Number:CaltechAUTHORS:20131031-085428697
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20131031-085428697
Official Citation:Kon-Kee Liu, Samuel Epstein, The hydrogen isotope fractionation between kaolinite and water, Chemical Geology, Volume 46, Issue 4, December 1984, Pages 335-350, ISSN 0009-2541, http://dx.doi.org/10.1016/0009-2541(84)90176-1.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:42149
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:01 Nov 2013 21:44
Last Modified:11 Oct 2019 19:39

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