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Quantitative Analysis of Sedimentary Minerals by Powder X-ray Diffraction

Published online by Cambridge University Press:  10 January 2013

Peter Bayliss
Affiliation:
Department of Geology and Geophysics University of Calgary, Alberta, Canada T2N 1N4
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Abstract

The variables of reflection overlap, crystallinity and crystallite size, primary extinction, microabsorption, chemical substitutions, preferred orientation, and analytical procedures affect quantitative analysis by powder X-ray diffraction. The intensity of the strongest reflection (I) of 39 minerals from a typical sedimentary environment divided by the intensity of the strongest reflection (Ic) of corundum, I/Ic, may be used to determine mineral percentages. Because of the numerous variables mentioned above, the I/Ic ratios used should be taken from multi-mineral specimens that occur either in the same geological formation for quantitative analysis (±7%) or in a similar geological formation for quantitative analysis (±30%).

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Type
Research Article
Copyright
Copyright © Cambridge University Press 1986

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