94 



J. Romberg: 



SiO, . 

 TiÜ2. 

 Al,03 

 FejOj 

 FeO . 

 MnO. 

 MgO. 

 CaO . 

 BaO . 

 SrO . 

 Na^O 



K:,0 . 



P=0,. 



70.62 

 0.30 

 i'-53 



1.74 

 0.19 

 1.28 

 3.38 



4.60 

 6.36 



65.88 

 10.92 

 6.44 



4-31 



5.23 



2.60 



4.62 



Molekular Prozente: 

 67.91 71.17 67.55 



0.34 0.51 0.72 



9.59 11.72 



3.64 



6.66 

 0.31 

 0.03 

 3.20 



5-45 

 0.07 



2.72 

 0.21 



7.18 

 4.31 



0.93 

 1.81 



1.76 

 2.43 



8.69 



7346 



8.79 



2.83 



1.22 

 1.18 



6.19 

 6.33 



68.79 

 0-57 

 11.63 



1-34 

 4.06 



5-«i 

 2.82 



100.00 

 Die Formeln daraus sind: 



100.00 100.00 



6795 

 0.24 

 12.85 



5-41 



1-45 

 3-29 



6.02 

 2.79 



Glühverlust. 



Glühverlust abzüglich t'Oj. 



