Table
T3. Typical values for USGS standards analyzed by ICP-AES, Leg
192.
BHVO-2
BCR-2
BIR-1
1185
1187
1185
1187
1185
1187
Major
element (wt%):
SiO2
49.56
49.56
49.82
49.85
54.47
53.73
53.96
54.10
47.45
48.26
48.11
47.770
TiO2
2.77
2.77
2.75
2.73
2.32
2.24
2.24
2.26
0.96
0.95
0.96
0.960
Al2O3
13.87
13.87
13.88
13.53
13.72
13.65
13.55
13.50
15.80
15.78
15.88
15.350
Fe2O3*
12.01
12.01
12.86
12.34
13.97
13.37
13.55
13.80
11.77
11.19
10.98
11.260
MnO
0.17
0.17
0.18
0.20
0.20
0.22
0.21
0.24
0.17
0.19
0.18
0.171
MgO
7.29
7.29
7.40
7.23
3.70
3.79
3.60
3.59
9.75
9.81
9.60
9.680
CaO
11.34
11.34
11.29
11.43
7.25
7.21
7.08
7.12
13.04
13.13
13.18
13.240
Na2O
2.27
2.27
2.24
2.22
3.26
3.15
3.21
3.16
1.86
1.81
1.85
1.750
K2O
0.57
0.57
0.70
0.52
1.96
2.00
1.79
1.79
BD
0.02
0.03
0.027
P2O5
0.27
0.27
0.27
0.27
0.33
0.32
0.35
0.35
0.11
0.03
0.01
0.046
Total:
99.83
99.83
101.40
100.86
99.89
99.54
100.77
101.31
100.79
Trace
element (ppm):
Ni
120
120
121
119
12
8
14
20
175
175
173
166
Cr
282
282
287
280
15
20
10
18
390
380
383
382
V
317
413
410
416
317
300
310
Zr
179
179
177
172
193
196
192
188
14
15
12
16
Sc
33
33
35
32
36
35
34
33
48
45
43
44
Y
27
27
26
26
39
36
38
37
18
16
19
16
Sr
385
385
389
389
340
335
329
346
107
106
109
108
Ba
136
136
138
130
716
710
686
683
7
6
7
7
Notes: All values are averages of the BHVO-2 and K-1919 reductions of each run. Only the K-1919 reduction was used for Site 1183 samples. Certified vanadium values are unavailable for K-1919. BHVO-2, BCR-2, and BIR-1 are USGS-certified basalt standards. K-1919 is a noncertified laboratory standard from the University of Massachusetts. * = total Fe expressed as Fe2O3. BD = below detection limit.