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Jeonghwan Hwang

The illite/smectite/kaolinite stability diagrams (Garrels 1984)

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Hi, this is Jeonghwan Hwang.

I want to make a phase diagram of illite/smectite/kaolinite stability diagrams that was adapted from Garrels, 1984

I made almost similar figure with it, but i could not make illite and montmorillonite in it... (Galles.ac2)

I used other thermo data, V8R6+ (Galles-1.ac2), but it could not solve, neither. 

Are there any technical method to make it?

Thank you

 

Sincerely, Jeonghwan Hwang.

 

4-Figure4-1.png

The-illite-smectite-kaolinite-stability-diagrams-adapted-from-Garrels-1984.jpg

Galles.ac2

Galles-1.ac2

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Hello Jeonghwan,

Here are a couple of suggestions to get you started. You might want to consider checking the equilibrium constants (Log Ks) in the existing database for the minerals of interest against the values used in the Garrels 1984 publication. To do so, use the TEdit app to open the database, in your case it would thermo.com.V8.R6+.tdat, and check the Log K values corresponding to each mineral. You can simply edit the thermo dataset in TEdit to match the values used in literature or make a duplicate to preserve the original values. After you have checked the equilibrium constants in the database, you might also want to try suppressing all minerals except for the ones in the targeted activity diagram so that less stable phases are considered.

Hope this helps.

Best,

Jia Wang

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