Table 10.2. Metal contents of manganese nodules, crusts, and hot vent sulfides.
Manganese nodules a
)
Manganese b
)
Hot vent sui fides c
)
%
Average
Hydrothermal
Pacific
Indian O.
Atlantic
max.
nun.
Crusts
oxides
Average
max
min
Mn
17.2
14.9
13.6
34.00
5.41
21.6
27.3
-
-
-
Fe
11.8
14.6
15.5
26.32
4.36
16.5
11.6
19.1
34.0
2.5
Ni
0.63
0.38
0.33
2.00
0.13
-
-
-
-
-
Co
0.36
0.31
0.24
2.57
0.045
0.63
0.0023
-
-
-
Cu
0.36
0.17
0.16
2.5
0.028
-
-
2.9
9.2
0.2
Ph
0.047
0.053
-
0.51
0.046
-
-
0.17
12.1
0.03
Zn
16.9
36.7
4.0
Si02
10.2
2R.I
1.2
-
. _ -
a) Mainly after J.
S. Tooms. 1972, Endeavour 31: 113, b)
After F.
T. Manheim and C. M. Lane-Bostwick, 1989, Nature, 335: 59, c) After S. D. Scott,
1991, in: K.
J. Hsii and
J. Thiede, 1992.
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