264 



Subsurface Geologic Methods 



Kaolinite-Quartz Mixtures 



^ 



O ^ l OO . 30 



4^ <j* r ' I ' r 



100 1 I I 



300 



Degrees Centigrode 



T' I ' T ' I ' T ' I ' 'T 



10 90 



4-^^ 



25 75 



50 50 



75 25 



90 10 



H h 



I h 



I H 



100 I [. 



■^T" 



-A— 



K l^-i \ i- 



JL 



Jl 



I ■ I ■ I 



100 300 



500 700 900 



Degrees Centigrade 



HOC 



Figure 112. Curves indicating effect on kaolinite with quartz as an impurity. 



