Bd. III: 15) 
PETROGRAPHLSCHE .STUDIEN. 
7t 
Gang- 
und Erguss-Gesteine. 
Tuff. 
26. 
27- 
28. 
29. 
3 °' 
31- 
32. 
33 - 
34 - 
,36. 
i J CIVI 
chtspyozcnic . 
SiU^ 
63-5 
62.97 
56.10 
54.61 
54.36 
48.97 
47-95 
46.54 
46.41 
43-3 
66.05 
TiO., 
0.7 
0. 10 
0.76 
1.66 
0.32 
1.62 
0.46 
0.45 
0.56 
1.9 
0-35 ^ 
AI ,03 
17.2 
• 4-75 
19.86 
19. 10 
18.49 
i6. 12 
18.66 
18.54 
18.94 
15.4 
15.36 
P'eO 
4-3 
6.16 
7.0. 
7.01 
6.93 
12.5 1 
8.08 
10.37 
10.35 
II. 8 
4-37 
CaO 
3-0 
5-51 
7.20 
6.51 
6.45 
8.73 
11.53 
10.26 
10.26 
9-3 
2-97 1 
MgO 
I.I 
2.12 
3-44 
3.06 
4. 10 
7.62 
7-33 
6.52 
6.02 
9.6 
4-15 1 
NajO 
5-5 
3-78 
3 - S 5 
4-34 
4-39 
2.99 
3.61 
3-63 
3-59 
3-7 
3.60 
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3-1 
I. 2 I 
1.08 
1.27 
2.21 
1.2, 
1.32 
1.52 
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1-4 
2-47 
ï \ 0 , 
— 
0.07 
Sp. 
0. 32 
— 
-- 
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— 
— 
lEO 
1-7 
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0.73 
2.63 
2.16 
1-39 
2.24 
3-27 
2.84 
3-9 
0.67 
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100.2 
98.82 
99.70 
100.51 
99.41 
99-77 
101.18 
loi.i 5 
100.51 
100.3 
99-99 
Koeffizicntc nach OSANN. 
S 
71.2 
69.7 
62.1 
62.5 
60.7 
53-7 
51.6 
51.. 
5'-4 
48.3 
70.9 
A 
8.2 
4-9 
4.6 
5.6 
6.3 
3-9 
4.6 
4-9 
4.9 
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6.9 
5.8 
6.2 
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7.0 
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6.4 
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12.3 
12.5 
15.. 
26.1 
25.0 
25.1 
24.1 
32.1 
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^ 
9-3 
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3-7 
4-5 
4.6 
2.2 
2-5 
2-7 
2-7 
2-3 
5.6 
c 
3-4 
4.6 
6.5 
5-5 
4-3 
3-4 
3-9 
3-8 
4.0 
2.3 
5.6 
f 
7-3 
10.6 
9.8 
lO.O 
1 I.I 
14.4 
13.6 
13-5 
13-3 
15.4 
10.9 
k 
1.2 
1.4 
1-4 
I.O 
0.9 
0.9 
0.8 
0.8 
0.8 
0.7 
1-4 
m 
6.2 
5-9 
5-9 
6.0 
6.3 
6.9 
5-9 
6.3 
6.1 
7-1 
7-5 
n 
7 -î 
8.3 
8.3 
8.4 
7 - S 
8.0 
8.1 
7.8 
7.8 
8.0 
6-9 
" 1 
( 23 3 
21.9 
< 9'5 
19.8 
19.4 
16.7 
16.2 
16.1 
16.2 
15.2 
22. ^ 
3-6 
3-1 
4 -° 
4.0 
3-9 
3-2 
3-7 
3-8 
3-9 
3-1 
3-1 
F 1 
\ 3-1 
5.0 
6.5 
6.2 
6.7 
10. 1 
10. 1 
10. 1 
9-9 
11.7 
4-4 
7 1 
f H-6 
13.8 
14.9 
14.5 
13.9 
12.6 
I 1.9 
12.4 
12.6 
II. S 
15-7 
^ j 
4' 7 
9.2 
9.8 
9.0 
8.8 
12.5 
13-4 
12.5 
12.4 
12.7 
5-5 
Alk 1 
1 10.7 
7.0 
5-3 
6. s 
7-3 
4-9 
4-7 
5 -> 
5-0 
5.8 
8.8 i 
MC 
3-3 
3-5 
4.0 
4.0 
4-7 
5-3 
4-7 
5-0 
4-5 
5-9 
6.6 
