Si0 2 . 
Ti0 2 . 
A1 2 0 3 
Fe 2 0 3 
FeO. 
MnO 
CaO. 
MgO 
Na 2 0 
k 2 o. 
PA- 
so 3 . 
Cl... 
h 2 o. 
207 
16. 
17. 
18. 
19. 
20. 
10 
50.61 
51.73 
52.09 
53.36 
55.66 
538 
.843 
.862 
.868 
.889 
.928 
18 
.51 
.54 
.37 
.33 
37 
15.67 
14.68 
16.58 
11.47 
11.03 
L 43 
.153 
.144 
.162 
.112 
.*108 
9.99 
.062 
)5 
10.67 
11.23 
11.61 
3.18 
10.83 
167 
.148 
.156 
.161 
.044 
.150 
19 
.52 
.71 
.32 
.43 
72 
11.35 
9.78 
9.13 
10.01 
11.13 
L 91 
.202 
.174 
.163 
.178 
.198 
15 
5.10 
4.11 
3.13 
6.89 
4.76 
L 34 
.127 
.103 
.078 
.172 
.119 
33 
3.42 
2.98 
2.47 
1.40 
2.37 
)43 
.055 
.048 
.039 
.022 
.038 
36 
.67 
1.24 
.89 
2.81 
.48 
106 
.007 
.013 
.009 
.029 
.005 
21 
1.80 
3.65 
3.22 
.58 
3.67 
LI 
.15 
.21 
.16 
.06 
tr. 
21 
.10 
.48 
.64 
.72 
.26 
38 
100.57 
101.34 
100.61 
100.41 
101.01 
