JV. L. Bowen — The Binary System. 



557 









Table II. 











(a) Inversion. 







Compo- 



Form 







Phases found 





sition 



at start 



Temp. 



Time 



after quenching 



No. 



Wt. % 

 CaAl 2 Si 2 8 









1 







Ne* 



1245° 



6 hrs. 



Ne only 



2 







Ne 



1252 



1 hr. 



Ne & Cg 



3 







Cz* 



1245 



1 hr. 



Ne & Cg 



4 







Cg 



1252 



6 hrs. 



Cg only 



5 







glass 



1260 



1 hr. 



Cg only 



6 







glass 



1252 



1 hr. 



Cg only 



7 







glass 



1245 



1 hr. 



Ne & Cg 



8 







glass 



1235 



1 hr. 



Ne&Cg 



9 



5 



Ne 



1260 



4 hrs. 



Ne only 



10 



5 



Ne 



1275 



1 hr. 



Ne&Cg 



11 



10 



glass 



1317 



7 hrs. 



Cg&Ne 



12 



10 



Ne 



1282 



4 hrs. 



Ne only 



13 



10 



Ne ' 



1294 



1 hr. 



Ne & Cg (trace) 



14 



10 



Ne 



1296 



1 hr. 



Ne & Cg 







*Ne: 



= Nephelite, 



Cg = Oarnegieite. 









(b) Nephelite solidus. 









See also (solid solution An in Ne). 



15 



20 



glass 



1317° 



6 hrs. 



Ne only 



16 



20 



Ne 



1337 



2 hrs. 



Ne only 



17 



20 



Ne 



1340 



1 hr. 



Ne only 



18 



20 



Ne 



1343 



1 hr. 



Ne & glass 



19 



25 



glass 



1328 



1 hr. 



Ne & glass 



20 



25 



glass 



1322 



1 hr. 



Ne only 



21 



30 



glass 



1310 



2 hrs. 



Ne only 



22 



30 



glass 



1317 



2 hrs. 



Ne & glass 



25 



26 



27 

 28 



30 

 31 

 32 



40 



20 

 20 

 25 



50 

 60 

 30 



(c) Ne liquidus. 

 See also eutectic composition. 



An & Ne 1320° 1 hr. glass & Ne (bare trace) 



glass 

 glass 

 glass 



An & Ne 

 An & Ne 

 An &Ne 



(d) Cg liquidus 



1 hr. 

 1 hr. 

 1 hr. 



1412° 



1417 



1374 



(e) An liquidus. 

 1330° 1 hr 



1380 

 1392 



1 hr. 

 1 hr. 



glass & Cg (bare trace) 



glass only 



glass & Cg (rare) 



glass only 

 glass only 

 glass only 



