X-Ray Intensity Measurements on Perthitic Materials I. Theoretical Considerations
| Autor: | Frederick J. Kuellmer |
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| Rok vydání: | 1959 |
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| Zdroj: | The Journal of Geology. 67:648-660 |
| ISSN: | 1537-5269 0022-1376 |
| DOI: | 10.1086/626623 |
| Popis: | With the use of well-established relations between integrated intensities, integral breadths, and composition, a method is outlined by means of which it appears possible to determine the relative structural states of many perthitic alkali feldspars with powder X-ray diffractometry. The basic relation for this procedure is \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage{wasysym} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document}$\frac{\int I\: (2\theta)\; {}_{o}d\; (2\theta)}{\int I\: (2\theta)\; {}_{o}d\; (2\theta)} = \frac{I_{o}\beta_{o}}{I_{a}\beta_{a}} = k\left(\frac{x_{o}}{x_{a}}\right),$\end{document}, where the subscripts o and a refer to the orthoclase-rich and albite-rich phases of the perthite; ∫I(2θ)d(2θ) is the integrated intensity of one phase; I is the maximum intensity; ... |
| Databáze: | OpenAIRE |
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