Subsurface Laboratory Methods 



263 



Kaolinite Goethite Mixtures 





10 90 |- 



29 75 |_ 



40 60 }- 



I H 



Degrees Centigrade 

 500 700 



I 1 1 \ 



J \ L 



900 900 TOO 



Oagrtat C«nti«rotf« 



I I \ \ L 



Figure 111. Artificial mixtures of kaolinite and goethite arranged to illustrate possible 

 interpretation of natural mixtures. 



