For one of my reports I have taken samples of a rock from an adjacent creek. I have done XRD analysis to get compositions of calcium, potassium and aluminium.

My question:

I know about ternary diagrams, this is the base graphical method I will be using. However, what other basic methods could I employ to emphasize the effects of weathering in this experiment? The following data is what I plan on using.


  • $\begingroup$ What data are you trying to display? Without this we can't really tell you how to display it. $\endgroup$ – bon May 31 '18 at 11:54
  • $\begingroup$ @bon Apologies. Added. $\endgroup$ – Yaboy33 May 31 '18 at 12:28

First of all, you probably used XRF, and not XRD. XRF is a method used to obtain chemical compositions. XRD is used to obtain crystal structures.

A ternary diagram would be indeed very useful in this case. Another thing you might want to try is ratios: a plot of Al vs. K/Ca or something similar. Potassium and calcium likely behave differently in different weathering regimes, so it could be useful to show it.

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  • $\begingroup$ I will try this! Yeah it was XRF not XRD, I always mix the two. I will definitely try plotting Al against K/Ca thanks! $\endgroup$ – Yaboy33 Jun 3 '18 at 14:05

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