Subsurface Laboratory Methods 



265 



. Kaolinite-Sericite Mixtures 



t^ <^ iqo 300 



^* / I ' I ■ I ■ I ■ 



100 



10 90 



25 75 



40 60 



60 40 



75 25 



90 10 



100 



A 1- 



I \- 



I \ h 



H H 



Degr««s Centigrod« 



500 700 900 



I ■ I • I ' I ' I ' 



1100 



r-n 



■+-^ 



J — f- 



i^—i- 



->v- 



f-^H— I 



I I I I I ' I ' I ■ I ■ I , I . I , I ■ I 



'00 300 ioo 700 ' 900 ^UOO 



Degrees Contigrode 



Figure 113. Curves showing mixtures of almost inert sericite and active kaolinite. 



