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- W2108524903 abstract "Other| October 01, 1996 Quantitative analysis of alkali feldspar minerals using Rietveld refinement of X-ray diffraction data Sang-Heon Shim; Sang-Heon Shim Seoul National University, Department of Geological Sciences, Seoul, South Korea Search for other works by this author on: GSW Google Scholar Soo Jin Kim; Soo Jin Kim Search for other works by this author on: GSW Google Scholar Jung Ho Ahn Jung Ho Ahn Search for other works by this author on: GSW Google Scholar Author and Article Information Sang-Heon Shim Seoul National University, Department of Geological Sciences, Seoul, South Korea Soo Jin Kim Jung Ho Ahn Publisher: Mineralogical Society of America First Online: 02 Mar 2017 Online Issn: 1945-3027 Print Issn: 0003-004X Copyright © 1977 by the Mineralogical Society of America American Mineralogist (1996) 81 (9-10): 1133–1140. https://doi.org/10.2138/am-1996-9-1011 Article history First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Sang-Heon Shim, Soo Jin Kim, Jung Ho Ahn; Quantitative analysis of alkali feldspar minerals using Rietveld refinement of X-ray diffraction data. American Mineralogist 1996;; 81 (9-10): 1133–1140. doi: https://doi.org/10.2138/am-1996-9-1011 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyAmerican Mineralogist Search Advanced Search Abstract Microcline + albite and albite + quartz standard mixtures were quantitatively analyzed using Rietveld refinement to investigate the reliability of the method. The method was also applied to the determination of weight percentages of component minerals in a per-thite sample. The analysis resulted in a standard deviation of approximately 1 wt% for the microcline + albite mixtures and 4 wt% for the albite + quartz mixtures, indicating that the accuracy of quantitative Rietveld analysis is far better than that of conventional XRD methods in which only a few select peaks are used. The inclusion of the Dollase-March preferred-orientation correction function slightly improved the accuracy of the results. That function also improved the rate of convergence and the accuracy of unit-cell parameters. However, the Rietveld-Toraya correction function did not work well with the quantitative analyses. The result of the quantitative analysis of the albite + quartz mixtures was poorer than that of the microcline + albite mixtures, and the weight fraction of albite tended to be overestimated. The analytical result of the microcline + albite mixtures implies that the Rietveld method is more accurate when component minerals have similar preferred-orientation characteristics. However, if component minerals have different crystal habits, as represented by the albite + quartz mixtures, the deviation is much greater and systematic errors may occur. Quantitative phase analysis of a perthite specimen using the Rietveld method resulted in very accurate values for the mineral proportion and unitcell parameters of the constituent alkali feldspars, demonstrating the power of the Rietveld method to analyze multiphase samples. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access." @default.
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- W2108524903 date "1996-10-01" @default.
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- W2108524903 title "Quantitative analysis of alkali feldspar minerals using Rietveld refinement of X-ray diffraction data" @default.
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