Metals
69
Table 3.3 Multielement ana- Element
Range
Mean
lysis of sediments
I1g kg- 1
Majors (%)
AI
2.626.38
4.38
Ti
0.080.38
0.28
Mg
0.591.68
1.10
Na
0.300.92
0.61
K
0.502.29
1.13
Ca
1.234.00
2.69
Fe
1.473.06
2.24
Rare earths (ppm)
La
28 - 73
37
Ce
53 - 160
85
Nd
15 - 137
52
Sm
7.86- 28
13
Eu
0.771.94
1.28
Gd
6.37- 22
11
Tb
0.952.39
1.52
Dy
5.26- 15
8.76
Tm
0.190.74
0.52
Yb
2.349.34
4.46
Lu
0.521.20
0.72
Noble metals (ppm unless specified otherwise)
Ag
< 0.1 - 1.04
0.42
Au"
0.25- 19
3.55
Ru"
45 -500
160
Pd"
< 20 -180
70
Os
< 1
4.49
lr"
0.52- 48
13
Pt
0.308.11
2.45
Trace elements (ppm unless specified otherwise)
As
1.86- 26
13
Ba
163 - 375
287
Br
23 - 96
44
Cl
< 20 -609
249
Co
3.91- 16
7.31
Cr
16 - 50
27
Cs
0.56- 14
2.93
Hf
1.67- 12
7.05
In"
5.3 - 19
12
Mn
214 -4500
684
Ni
< 1 - 218
38
Rb
19 - 49
35
Sb
< 0.01- 2.9
1.56
Sc
3.309.16
5.70
Se
0.D31.01
0.39
Sr
< 10 - 242
90
Ta
0.411.44
0:87
Th
4.029.38
6.39
U
0.784.35
2.25
V
28 . - 68
46
Zn
< 10 - 450
278
Zr
54 - 488
263