HETEROGENEOUS EQUILIBRIUM 



271 



A^syci\^/io 



/^OS/Cjr/VpO 



fe02Si0a 



t^O^Qt-MiO 



/^gO 



s/a, 



Fig. 6. The ternary system, H2O-K2O -8102-8102. This diagram 

 shows the various boundary curves, which give the locus of the com- 

 position of the liquid phase in the various univariant equilibria. The 

 mvariant (quintuple) points are designated by the letter Q; the numbers 

 on the curves are the same in Figs. 6, 7, and 8. Following is a list of 

 phases stable along each curve. 



Curve 2. V -f L -f- K20-48i02-H20 + SiOj 



-I- K20-28i02-H20 + KjO- 48102 -HiO 

 -I- K20-2Si02 -I- K20-4S102-H20 

 + KjOSiOi-HjO + K20-2S102H20 

 -I- K20-S102-^H20 + K20-28i02-H20 

 + K20-8i02-^H20 + K20-28102 

 -I- KjO-SlOj + KjO- 28102 

 + K20Si02 4H20 + KjO- 28102 HjO -|- K20-2810, 

 7b. V + L -f- K20- 28102 •H2O + K20-28i0j 



Curve 

 Curve 

 Curve 

 Curve 

 Curve 

 Curve 

 Curve 

 Curve 



4a. 

 4b. 

 6a. 

 6b. 

 6c. 

 6d. 

 7a. 

 7a 



V 

 V 

 V 

 V 

 V 

 V 

 V 

 4- 



L 

 L 

 L 

 L 

 L 

 L 



-1- KjO^SiOjHsO 

 Curve 7b + 7c. V + L + K20-2Si02H20 + K20- 28102 

 Curve 7a -I- 7b 4- 7c. V -f- K20-28102-H20 -|- K20- 28102, in binary 



system, HjO-KzO- 28102 

 Curve 8a. V -f K20- 8102- H2O -f K20- 8102- §H20 -|- KjO- 28102 -HzO 

 Curve 8b. V + L -f- K20-8i02H20 + K20-8102-^H20 

 Curve 8a -|- 8b. V -f- K20-8i02-H20 -}- K20-8102-^H20, in binary 



system, H20-K20-8102 

 Curve 9. V + KzO- 48102 •H2O -|- K2O -48102 -|- 8iOj 

 Curve 10a. V -|- K20-8102-§H20 + K2O-8IO2 -f K20-28i02 

 Curve 10b. V -i- L + K20-8i02-§H20 + K2O-8IO2 

 Curve 10a -|- 10b. V -|- K20-8102-iH20 + K2O-SIO2, in binary sys- 

 tem, H20-K20-8i02 

 Curve 11. V + L -h K2O-28IO2 -|- K20-48102 

 Curve 12. V + L -f- KjO-48102 + 810, 



