Newman, Sally and Stolper, Edward M. and Epstein, Samuel
Measurement of water in rhyolitic glasses; calibration of an infrared spectroscopic technique.
American Mineralogist, 71
- Published Version
See Usage Policy.
Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20120820-152545298
A series of natural rhyolitic obsidians were analyzed for their total water contents by a vacuum extraction technique. The grain size of the crushed samples can significantly affect these analyses. Coarse powders must be used in order to avoid surface-correlated water. These analyses were used to calibrate infrared spectroscopic measurements of water in glass using several infrared and near-infrared absorption bands. We demonstrate that infrared spectroscopy can yield precise determinations of not only total dissolved water contents, but also the concentrations of individual H-bearing species in natural and synthetic rhyolitic glasses on spots as small as a few tens of micrometers in diameter.
|Additional Information:||© 1986 by the Mineralogical Society of America.
Manuscript received December 24, 1985; Manuscript accepted July 8, 1986.
The authors thank the following people for providing samples: A. T. Anderson, Jr., University of Chicago; I. S. E. Carmichael, University of California, Berkeley; T. Grove, Massachusetts Institute of Technology; K. Lapham, Arizona State University; H. Westrich, Sandia Laboratories; and M. Bursik and K. Sieh, California Institute of Technology. This study was supported by grant numbers EAR 83-3086 and EAR 84-17434 from the National Science Foundation and by DE-FG03-85ER13445 from the Department of Energy. This is contribution 4284 of the Division of Geological and Planetary Sciences, California Institute of Technology.|
|Funding Agency||Grant Number|
|Department of Energy (DOE)||DE-FG03-85ER13445|
|Other Numbering System:|
|Other Numbering System Name||Other Numbering System ID|
|Caltech Division of Geological and Planetary Sciences||4284|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited On:||21 Aug 2012 23:05|
|Last Modified:||09 Dec 2016 20:52|
Repository Staff Only: item control page