256 FLORIDA GEOLOGICAL SURVEY— 15 TH ANNUAL REPORT 
FUSION POINTS OF SEGER CONES— Continued 
Cone 
No. 
Chemical Composition 
Tempera¬ 
ture 
Appearance of 
°F 
°C 
Heat 
1 
0.3 K 2 O 
0.7 CaO 
0.2 Fe203 
0.3 AhOs\ 
4 
SiOs 
2102 
1150 
Deep Orange Heat. 
2 
0.3 K 2 O 
0.7 CaO 
0.1 Fe203> 
0.4 AhOs 
4 
Si02 
2138 
1170 
3 
0.3 K 2 O 
0.7 CaO 
0.05 Fe203 
0.45 AI 2 O 3 
4 
SiOs 
2174 
1190 
4 
0.3 K 2 O 
0.7 CaO 
0.5 AI 2 O 3 
4 
SiOs 
2210 
1210 
5 
0.3 K 2 O 
0.7 CaO ; 
0.5 AhOs 
5 
SiOs 
2246 
1230 
6 
0.3 K 2 O 
0.7 CaO 
0.6 AbOs 
6 
Si02 
2282 
1250 
7 
0.3 K 2 O 
0.7 CaO ' 
0.7 AI 2 O 3 
7 
SiOs 
2318 
1270 
8 
0.3 K 20 ; 
0.7 CaO ; 
•0.8 AI 2 O 3 
8 
Si02 
2354 
1290 
9 
0 p 
Cl Ui 
P to 
00 
0.9 AhOs 
9 
Si02 
2390 
1310 
White Heat. 
10 
0.3 K 2 O ] 
0.7 CaO j 
| 1.0 AI 2 O 3 
10 
Si02 
2426 
1330 
11 
0,3 K 2 O 1 
0.7 CaO j 
| 1.2 AhOs 
12 
Si02 
2462 
1350 
12 
0.3 K 2 O | 
0.7 CaO J 
j- 1.4 AhOs 
14 
S 1 O 2 
2498 
1370 
13 
0.3 K 2 O 1 
0.7 CaO \ 
| 1.6 AI 2 O 3 
16 
S 1 O 2 
2534 
1390 
14 
0.3 K 2 O 1 
0.7 CaO < 
|l.8 AhOs 
18 
Si02 
2570 
1410 
Bright White Heat. 
15 
0.3 K 2 O 1 
0.7 CaO ^ 
| 2.1 Ah03 
21 
S 1 O 2 
2606 
1430 
16 
0.3 K 2 O 1 
0.7 CaO 1 
| 2.4 AhOs 
24 
Si02 
2642 
1450 
17 
0.3 K 2 O 
0.7 CaO 1 
| 2.7 AhOs 
27 
Si02 
2678 
1470 
18 
0.3 K20 ; 
0.7 CaO ^ 
| 3.1 AhOs 
31 
SiOs 
2714 
1490 
19 
0.3 K 2 O 
0.7 CaO 
| 3.5 AhOs 
35 
S 1 O 2 
2750 
1510 
Dazzling White Heat. 
20 
0.3 K 2 O 
0.7 CaO 
| 3.9 AhOs 
39 
Si02 
2786 
1530 
21 
0.3 K 2 O 
0.7 CaO 
| 4.4 AhOs 
44 
SiOs 
2822 
1550 
22 
0.3 K20 ; 
0.7 CaO 1 
| 4.9 AhOs 
49 
SiOs 
2858 
1570 
23 
0.3 K 2 O 
0.7 CaO 
| 5.4 AhOs 
54 
Si02 
2894 
1590 
24 
0.3 K 2 O 
0.7 CaO 
| 6.0 AhOs 
60 
Si02 
2930 
1610 
