In my opinion, it can be an indirect indication of the presence of glauconite. Since some peaks cannot be easily detected in the qualitative analysis due to the broadness of the peaks and/or the high-background, I am sometimes obliged to make this indirect interpretation. However, in this case, I am generally going back to the qualitative analysis and trying to confirm this indirect interpretation.
Best Regards. Mustafa Ç. On 22 April 2015 at 19:56, "Łukasz Kruszewski" <lkruszew...@twarda.pan.pl> wrote: > Dear Friends. I have one more question regarding Rietveld analysis (in > TOPAS, v. 4.0). I have multi-mica samples, where muscovite, biotite and > illite were observed. There is also a suspiction of the presence of > glauconite, thus I am adding this phase into the refinement and this > lowers the Rwp value. Is such Rwp lowering a good proof of the presence of > glauconite in the sample? > > Best regards, > > Łukasz Kruszewski, Ph.D., adjunct > Polish Academy of Sciences > Institute of Geological Sciences > X-Ray Diffraction Laboratory (coordinator) > Twarda 51/55 str. > 00-818 Warsaw > Poland > > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > Please do NOT attach files to the whole list <alan.he...@neutronoptics.com > > > Send commands to <lists...@ill.fr> eg: HELP as the subject with no body > text > The Rietveld_L list archive is on > http://www.mail-archive.com/rietveld_l@ill.fr/ > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > >
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Please do NOT attach files to the whole list <alan.he...@neutronoptics.com> Send commands to <lists...@ill.fr> eg: HELP as the subject with no body text The Rietveld_L list archive is on http://www.mail-archive.com/rietveld_l@ill.fr/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
