Dear Sachin,

Sometimes the same peak can represent two phases. You can select the phase which has the max score from the drop down menu of matched patterns.

I am a bit concerned about your XRD patterns below 20deg 2theta. For clay minerals, there a lot of important peaks in that range (assuming you are using copper k-alpha radiation), and it becomes important for conventional Bragg-Brentano geometry to make sure the sample is flat, exactly on the focusing circle (i.e., the sample is at the correct height), and that preferred orientation is minimized. Also that the diffractometer is well aligned and calibrated, but that is sort of obvious.

Edward Andrew Payzant

XRD scan is carried out with Bragg-Brentano geometry with Cu k alpha x-ray. Sample surface is flat and it is fine powder. Diffractometer is well aligned and calibrated.

How i can minimized preferred orientation?

can you provide paper for reference?

Thanks

Bala Narasimha Guniputi

how i can that a particular phase has maximum score?

i am using DIFFRAC.EVA (Bruker) for search-match.

Thanks

Generally we use xpert high score with ICDD Database.

If possible send me your raw data, will tell you the procedure if it works.

As first step I would proceed to identify the single clay phases by the standard procedure suggested by USGS:

https://pubs.usgs.gov/of/2001/of01-041/htmldocs/flow/index.htm

Yes, one peak can belong to several minerals. but notice that you should have one special peak (below 35 degree 2 theta) for each of your suggested phases to report it

Thanks Mohammad Kharamesh

Here is a method may help you, https://www.researchgate.net/publication/339363196_Match_XRD_data_with_JCPDS-_A_method_2020/stats