556 



NEW YORK STATE MUSEUM 



■^^2-' Composition and fusing points of Seger cones 



5 (continued) 



O. of cone 



Composition 



Fu i ng point 



1 



2 



3 



4 



jO.3 K^O] 

 (0.7 CaO 

 (0.3 K2O) 

 (0.7 CaO 1 

 j 0.3 K2O; 

 (0.7 CaO i 

 jO.3 K,0( 

 / 0.7 CaO i 



0.2 Fe203K 

 "0.3 AlaOaf * 



0.1 Ye^OsU 

 "0.4 AlgOg f * 



0.05 Fe203 j , 

 ■ 0.45 AI2O3 f * 



-0.5 AI2O3 4 



Si02 



Si02 

 SiOa 

 SiOa 



2 102 

 2 138 

 2 174 

 2 210 



1 150 

 1 170 

 1 190 

 1 210 



5 



j 0.3 K2O 



(0.7 CaO i 



^0.5 AI3O3 5 



Si02 



2 216 



1 230 



6 



(0.3 K,0\ 



(0.7 CaO \ 



0.6 AI3O3 6 



Si02 



2 282 



1 260 



7 



I 0.3 K2OI 



|0.7 CaO 1 



-0.7 AI3O3 7 



SiOs 



2 318 



1 270 



8 



( 0.3 KgOj 

 ]0.7 CaOi 



0.8 AI2O3 8 



Si02 



2 354 



1 290 



9 



(0.3 K2O / 

 ]0.7 CaO 1 



-0.9 AI2O3 9 



Si02 



2 390 



1 310 



10 



j 0.3 K2O , 



(0.7 CaO ( 



-1.0 AI2O3 10 



SiOa 



2 426 



1 330 



11 



(0.3 K,0\ 



(0.7 CaO i 



■ 1.2 AI2O3 12 



Si02 



2 462 



1 350 



12 



j 0.3 K^O i 

 (0.7 CaO i 



-1.4 AI2O3 14' 



Si02 



2 498 



1 370 



13 



JO.3 K3O] 

 1 0.7 CaO ! 



■1.6 AI2O3 16 



Si02 



2 534 



1 390 



14 



j 0.3 K2O 1 

 |0.7 CaO 1 



■1.8 AI2O3 18 



SiOa 



2 570 



1 410 



15 



( 0.3 K2O 1 



1 . 7 CaO 1 



2.1 AI2O3 21 



Si02 



2 606 



1 430 



16 



jO.3 K2O 



|0.7 CaO 1 



-2.4 AI2O3 24 



Si02 



2 642 



1 450 



17 



j 0.3 K2O j 



(0.7 CaO ' 



-2.7 AI2O3 27 



Si02 



2 678 



1 470 



18 



( 0.3 K2O i 

 (0.7 CaO ' 



■3.1 AI2O3 31 



SiOa 



2 714 



1 490 



19 



0.3 K2O] 

 (0.7 CaO 



■3.5 AI2O3 35 



Si02 



2 750 



1 510 



20 



(0.3 K2O ] 

 (0.7 CaO 



■3.9 AI2O3 39 



Si02 



2 786 



1 530 



21 



( 0.3 K2O 

 (0.7 CaO 



^4.4 AI2O3 44 



Si02 



2 822 



1 550 



22 



( 0.3 K2O 



] 0.7 CaO 



^4.9 AI2O3 49 



SiOa 



2 858 



1 570 



