Table 1. The
analytical standard deviation of each major element determined by XRF for three
samples from Site 997.
Sample:
164-997B-11X-1,
80-82 cm
164-997B-11X-2,
80-82 cm
164-997B-11X-3,
80-82 cm
Element
Test
1
(%)Test
2
(%)Test
3
(%)S.D.
Test
1
(%)Test
2
(%)Test
3
(%)S.D.
Test
1
(%)Test
2
(%)Test
3
(%)S.D.
SiO2
61.26
61.10
61.20
0.08
58.41
58.18
58.17
0.13
60.23
60.14
60.15
0.05
TiO2
0.83
0.82
0.82
0.01
0.78
0.78
0.78
0.00
0.81
0.81
0.81
0.00
Al2O3
6.72
16.71
16.71
0.01
16.21
16.23
16.23
0.01
17.32
17.32
17.32
0.00
Fe2O3
6.50
6.50
6.49
0.01
6.56
6.55
6.56
0.00
6.73
6.74
6.74
0.01
MnO
0.07
0.07
0.07
0.00
0.11
0.11
0.11
0.00
0.15
0.15
0.15
0.00
MgO
2.32
2.31
2.32
0.01
2.39
2.41
2.42
0.01
2.50
2.49
2.49
0.01
CaO
8.17
8.15
8.19
0.02
11.41
11.37
11.45
0.04
7.81
7.75
7.79
0.03
Na2O
0.42
0.45
0.43
0.02
0.51
0.53
0.51
0.01
0.58
0.58
0.60
0.01
K2O
2.67
2.66
2.66
0.01
2.57
2.56
2.57
0.00
2.66
2.66
2.66
0.00
P2O5
0.28
0.27
0.27
0.00
0.26
0.26
0.26
0.00
0.26
0.26
0.26
0.00