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Fluorescent X-Ray Spectrographic Analyses of Amphibolite Rocks and Constituent Hornblendes

Published online by Cambridge University Press:  06 March 2019

A. A. Chodos  and
Celeste G. Engel
A. A. Chodos
Affiliation:
California Institute of Technology, Pasadena, California
Celeste G. Engel
Affiliation:
U. S. Geological Survey, University of California La Jolla, California
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Abstract

Fluorescent X-ray spectrographic analyses have been made for the oxides Fe2O3 caO, MgO, K2O, TiO2, and MnO on samples of amphibolite rock. In addition, the above oxides and SiO2 and Al2O3 have been determined in a suite of constituent hornblendes from these rocks.

Classical wet chemical analyses of materials of the same minera logical composition as the samples are used to establish the working curves. This eliminates the necessity for Internal standardization or other treatment of the samples. The only sample preparation involves extremely fine grinding before analysis.

Precision of the analyses is equivalent to, or better than, that achieved by wet chemical methods.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 4: Ninth Annual Conference on Applications of X-ray Analysis, August 10-12, 1960 , 1960 , pp. 401 - 413
Copyright
Copyright © International Centre for Diffraction Data 1960

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References

1. Chodos, A. A., Branco, J. J. R., and Engel, C. G., “Rock Analysis by X-Ray Fluorescence Spectroscopy,” Advances in X-Ray Analysts, Vol. 1, University of Denver, Plenum Press, New York, 1960, p. 315.Google Scholar
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