Dear Sirs,
I'm a new user to MAUD. I am trying to quantify mineral phases using Rietveld refinement through MAUD software. I followed all the steps to create instrument calibration file using Y2O3 as suggested by Prof. Luca Lutterotti. I am able to fit the peaks my residue plot is almost flat. I first tried with Silicon (20%) + Calcite (80%) mixture, I got the results as Si (18%) and (82%). But while trying with Calcium chromate + Calcite and Calcium chromate + Si, the quantification gives different results. I tried to change the scale factors let's say calcite (0.2), it gives the expected result. But not in the other way around. Can any one please help me in this regard? My specific questions are as follows.
1. Is there any need to change the scale factors for a particular phase?
2. Is there any way to feed the MAUD program to tell particular phase as the internal standard? (My final aim is to use this program to calculate phases weight% in environmental samples)
I attached 1. instument file generated using MAUD, 2. Silicon (20%) + Calcite (80%), 3. Calcite (40%) + Chromate (60%).
Thanks in advance,
Aravinth Subramaniam
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