400 500 



TEMPERATURE ("C) 



400 500 



TEMPERATURE ("C} 



FIG. S-RELATIONSHIP BETWEEN LOSS OF WEIGHT IN 



PER CENT AND TEMPERATURE FOR SAMPLES 72, 73, 



AND 77 



FIG. 6— RELATIONSHIP BETWEEN LOSS OF WEIGHT IN 

 PER CENT AND TEMPERATURE IN MISSISSIPPI 

 BENTONITE, HALLOYSITE, GL AUCON ITE^ AND KAOLINITE 



100 200 300 400 500 600 700 80C 



TEMPERATURE (°c) 



FIG. 7— RELATIONSHIP BETWEEN LOSS OF WEIGHT IN PER CENT AND TEM- 

 PERATURE IN CHABAZITE AND PHILLIPSITE 



137 



