Geology Reference
In-Depth Information
Table 4.6 Analyses of Potassic rocks from Toro-Ankole and Bufumbira, Equatorial Africa
SiO
2
H
2
O
+
H
2
O
¯
TiO
2
Al
2
O
3
Fe
2
O
3
FeO
MnO
MgO
CaO
SrO
BaO
Na
2
O
2
O
2
O
5
Others
Total
1
-
40.52
5.28
8.17
6.33
6.29
0.21
11.55
12.55
0.22
0.19
2.50
3.75
0.44
1.31
0.40
99.71
2
36.71
5.54
9.30
9.44
4.24
0.26
6.34
14.08
0.34
0.25
2.40
6.05
1.11
1.82
0.42
1.30
99.60
3
39.18
6.29
9.86
8.03
5.13
0.23
6.63
13.31
0.25
0.23
2.87
5.00
0.85
1.08
0.55
0.35
99.84
4
-
-
43.73
1.84
9.85
3.04
8.03
0.17
20.18
8.70
1.54
1.73
0.37
0.47
0.08
0.43
100.16
5
-
-
40.47
3.52
5.38
4.03
6.47
0.13
24.84
8.06
0.68
3.46
0.29
1.11
0.57
1.07
100.08
6
-
-
-
44.70
3.40
11.9
2.30
9.80
0.23
10.30
11.10
1.96
2.80
0.50
0.72
0.24
99.95
7
-
-
-
43.70
3.41
10.0
4.00
7.00
0.21
11.20
13.80
1.89
2.90
0.52
0.68
0.19
99.50
8
-
-
-
44.30
2.80
11.6
2.60
8.30
0.22
11.50
10.90
2.70
3.10
0.59
0.80
0.36
99.77
9
-
-
38.05
3.84
7.54
8.41
2.80
0.21
13.55
13.90
1.31
3.02
0.95
2.27
3.00
0.82
99.57
10
-
-
43.73
1.84
9.85
3.04
8.03
0.17
20.18
8.70
1.54
1.73
0.37
0.47
0.08
0.05
99.78
11
-
-
40.00
4.75
7.68
5.38
4.77
0.15
15.46
9.79
0.65
7.04
0.42
1.66
0.97
0.54
99.26
12
-
-
-
-
-
-
47.10
2.54
13.36
11.42
0.18
9.92
10.39
2.19
2.39
0.45
99.94
13
-
-
39.06
4.36
8.18
4.61
4.98
0.26
17.66
10.40
0.18
6.98
0.61
1.42
0.50
0.26
99.46
14
-
-
40.47
3.52
5.38
4.03
6.47
0.23
24.84
8.06
0.68
3.46
0.29
1.11
0.57
0.15
99.26
15
-
-
-
-
-
-
(continued)
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