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SiO2 Na2O
K2O+Na2O vs SiO2 diagram from [5] of volcanic rocks from the ...
![K2O+Na2O vs SiO2 diagram from [5] of volcanic rocks from the ...](https://www.researchgate.net/publication/357636404/figure/fig1/AS:11431281099129007@1669221067352/K2O-Na2O-vs-SiO2-diagram-from-5-of-volcanic-rocks-from-the-Dokhuz-Puar-volcanic-field.png)