Subsurface Laboratory Methods 



269 



•4^ KaOLINITE- MONTMORILLONITE 



<? Mixtures 





Degrees Centigrade 



^ «^ lOO 300 500 700 900 1100 



o^ ^^ T ■ I ' I ' I ' I ' I ' I ' I ' I ■ I ' I 



100 



10 90 



2S 75 



40 60 



60 40 



75 25 



90 10 



100 



H ^ 



^ — I 



r — I 



' I i I ■ I ' 



I I I 1_J 1 I I L. 



100 300 500 700 900 



Degrees Centigrade 



Figure 117. Thermal curves of artificial kaolinite-montmorillonite mixtures with a 

 range from to 100 percent. 



