This is an XRD pattern of limestone powder constating of Quartz, Calcite, Dolomite mainly.
Is there chance you can help checking and finding the phase quantification of the below XRD pattern?
An approximate numbers will surely help me to interpret some of my work. I have noted the first intense peaks for those 3 major phases of the minerals in the limestone.
Calcite is more than 40 % and Quartz is below 10%. Any approximate numbers based on intensity ratio is great.
Please have a look. Any of your input is very much helpful.
Hello,
quantification that is based only on the ratio of intensities is extremely imprecise and often leads to completely wrong results. The reason is, among other things, significant differences in the absorption coefficients for calcite and quartz, as well as possible texturing. Nowadays, it is not a problem to determine the approximate proportions of phases using programs for the Rietveld method of diffraction data processing. Some of these programs are also free to download, for example Profex.
In addition to the mentioned minerals, in the attached diffraction pattern I also see small proportions of feldspars and clay minerals.
If you publish the measurement file (raw, dat. xy etc.) I can try to quantify it.
Hello Prathap Chandran as mentioned before, to execute a quality Rietveld refinement we would need the raw data file. I converted that VERY low resolution bitmap back into scan data and refined the 3 phases you mentioned. Even there you can see that some phase(s) is missing. Still the this could give you an QPA indication of the relation between the 3 given phases.
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