CLAKKE.] 
IGNEOUS AND CRYSTALLINE ROCKS. 
127 
G. 
H. 
1. 
J. 
K. 
L. 
Si0 2 
62.58 
16.42 
2.46 
1.96 
1.84 
2.47 
4.57 
3.91 
.38 
1.40 
.40 
.33 
.08 
.10 
.41 
trace 
.77 
67.44 
15.78 
1.58 
.85 
1.43 
2.38 
4.11 
4.87 
.32 
.70 
.32 
.21 
trace 
.09 
.24 
trace 
67.04 
15.25 
1.69 
1.13 
1.75 
2.17 
4.09 
5.10 
.56 
.51 
.20 
.21 
.05 
.03 
.33 
trace? 
64.95 
15. 44 
2.02 
1.60 
2.65 
3.07 
4.25 
3.87 
.26 
.85 
.39 
.25 
trace 
.10 
.35 
62.18 
15. 77 
1.83 
2.44 
3.55 
4.13 
3.92 
3.91 
.30 
.70 
.55 
.32 
trace 
.16 
.43 
trace 
55.13 
20. 27 
1.52 
4.29 
1.80 
7.05 
4.31 
2.84 
.14 
.95 
.74 
.40 
.13 
.06 
.11 
trace 
.26 
Al-0, 
Fe 2 3 
FeO 
MgO 
CaO 
Na 2 
K 2 
H 2 OatllO°... 
H 2 above 110° 
Ti0 2 
P„0 R 
MnO 
SrO 
BaO 
Li 2 
C0 2 
so 3 
trace 
trace 
.02 
.04 
trace 
.04 
CI 
100. 08 
100. 32 
100. 11 
100. 11 
100. 23 
100. 00 
