Subsurface Laboratory Methods 



257 



Certain 3-layer Lattice Minerals 



0«gr«t» Ctntlgrod* 



Conddtrio, Nivodo 



Trontylvonie 



N««dl«t. Colif. 



Montrtol, Ou*b«e 



Gioigoa, Scotlond 



Hydromieo ? 

 (IlliU) 



Monrmorillonit*- 

 i and Hydromico? 

 (Illit*) 



1 ■ I Soponilt 



I I I J SoponlH 



I Soponil* 



■ I ■ I L 



100 300 



■Jill Lt 



500 700 



Ocor*** Canllgrod* 



I ■ Xa I ■ I 



900 TTOO 



Figure 107. Several thermal curves of montmorillonite, saponite, and hydromica 

 (metabentonite and illite) are illustrated. 



