INAA Services at Washington University
Typical Results

The following tables provide results of "routine analyses" for a variety of rock types. To obtain an estimate of the precision to which we can determine an element in your samples, find the rock type with the most similar composition. If the element is not listed, it is an element that we cannot (or do not routinely) determine by INAA. See Services Provided.

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Typical Results for a Variety of Geochemical Reference Standards
   
Na2O
%
CaO
%
Sc
µg/g
Cr
µg/g
FeOT
%
Co
µg/g
Ni
µg/g
As
µg/g
Br
µg/g
Rb
µg/g
Sr
µg/g
Zr
µg/g
Sb
µg/g
Cs
µg/g
Ba
µg/g
USGS
BHVO-1		 basalt
± 
2.27
0.03
12.0
0.4
31.2
0.3
293
3
11.13
0.11
45.5
0.5
127
30
0.6
0.3
<0.8
12
3
406
30
165
50
0.15
0.03
0.10
0.05
126
15
NIST
SRM 688		 basalt
±
2.14
0.03
12.3
0.6
37.0
0.3
328
3
9.29
0.09
48.5
0.5
157
40
2.3
0.8
0.4
0.3
<10
170
30
60
40
0.10
0.03
<0.3
166
20
USGS
AGV-1		 andesite
±
4.23
0.06
4.8
0.7
11.80
0.12
8.6
0.4
6.02
0.06
15.4
0.2
<60
0.8
0.4
<0.8
67
8
670
50
217
25
4.15
0.06
1.30
0.04
1192
50
GSJ
JA-2		 andesite
±
3.20
0.05
6.4
0.4
17.9
0.2
422
4
5.54
0.06
28.1
0.3
132
30
0.8
0.3
<0.3
72
5
263
40
117
30
0.13
0.02
5.01
0.10
308
16
NIST
SRM 278		 obsidian
±
4.77
0.06
1.0
0.3
4.96
0.05
6.0
0.5
1.82
0.02
1.44
0.02
<80
4.4
0.4
2.4
0.4
126
8
65
15
268
20
1.56
0.05
5.13
0.08
887
25
GSJ
JG-1a		 granodiorite
±
3.38
0.04
2.2
0.4
5.98
0.06
16.1
0.4
1.77
0.02
5.22
0.05
<40
0.4
0.2
<0.5
178
12
186
25
115
25
0.04
0.02
11.0
0.3
468
20
GSJ
JG-3		 granodiorite
±
4.03
0.05
3.8
0.3
8.42
0.08
20.7
0.5
3.26
0.03
10.90
0.11
<80
0.4
0.2
0.19
0.12
65
5
353
40
140
20
0.034
0.020
1.88
0.08
447
20
GSJ
JG-2		 granite
±
3.52
0.05
0.7
0.4
2.14
0.03
2.7
0.4
0.82
0.02
4.05
0.04
<50
0.9
0.2
<0.2
290
20
18
10
86
15
0.046
0.008
6.93
0.10
61
8
USGS
QLO-1		 quartz latite
±
4.19
0.05
3.5
0.4
8.41
0.10
1.9
0.1
3.86
0.04
7.32
0.10
<60
2.6
0.5
1.1
0.3
71
8
349
30
178
25
1.74
0.05
1.67
0.05
1366
30
USGS
STM-1		 neph. syenite
±
8.89
0.10
1.2
0.4
0.520
0.010
<3
4.70
0.1
0.71
0.04
<100
4.1
1.0
1.5
0.6
112
10
730
50
1130
50
1.53
0.04
1.51
0.03
578
20
USGS
SCO-1		 shale
±
0.90
0.02
2.8
0.4
11.6
0.2
69.9
1.0
4.56
0.05
11.2
0.2
23
12
12.4
1.0
0.6
0.2
111
7
174
20
160
25
2.37
0.06
7.78
0.10
557
20
USGS
SGR-1		 shale
±
3.06
0.04
8.4
0.6
5.00
0.05
31.7
0.6
2.66
0.03
11.8
0.2
30
15
67
2
0.52
0.25
78
8
394
25
52
20
3.42
0.05
5.10
0.08
283
12
USGS
SDC-1		 mica schist
±
2.05
0.03
1.3
0.5
15.0
0.2
62.1
1.0
6.20
0.06
17.8
0.2
42
25
<1
<2
123
10
179
25
300
50
0.49
0.03
4.02
0.06
618
20
NIST
SRM 692		 Fe ore
±
0.008
0.002
<2
1.61
0.02
22.2
1.0
76.7
0.8
13.6
0.2
<100
47.5
1.5
1.6
0.4
<60
50
20
<250
0.51
0.04
0.10
0.04
56
15
NIST
SRM 1c		 limestone
±
0.0260
0.0010
50.9
1.0
1.20
0.02
17.2
0.4
0.495
0.008
1.08
0.02
7
4
1.13
0.10
0.51
0.10
11.4
1.2
270
20
28
8
0.154
0.012
0.54
0.03
80
8
GIT-IWG
AN-G		 anorthosite
±
1.62
0.02
15.9
0.4
9.93
0.10
47.4
1.0
2.957
0.005
24.8
0.3
<80
<1
3.3
0.5
<6
79
30
<50
0.09
0.02
<0.2
32
15
GSJ
JF-2		 feldspar
±
2.42
0.03
<0.4
0.067
0.002
1.33
0.15
0.045
0.002
0.551
0.010
<12
0.40
0.12
0.11
0.05
216
12
187
15
<12
0.024
0.004
1.08
0.03
291
12
GSJ
JP-1		 peridotite
±
0.027
0.005
0.58
0.15
7.02
0.07
2982
30
7.39
0.07
116.4
1.2
2485
50
0.47
0.16
0.29
0.10
<10
<80
<60
0.033
0.012
<0.2
<30
   
Na2O
%
CaO
%
Sc
µg/g
Cr
µg/g
FeOT
%
Co
µg/g
Ni
µg/g
As
µg/g
Br
µg/g
Rb
µg/g
Sr
µg/g
Zr
µg/g
Sb
µg/g
Cs
µg/g
Ba
µg/g
   
La
µg/g
Ce
µg/g
Nd
µg/g
Sm
µg/g
Eu
µg/g
Tb
µg/g
Yb
µg/g
Lu
µg/g
Hf
µg/g
Ta
µg/g
W
µg/g
Au
ng/g
Th
µg/g
U
µg/g
USGS
BHVO-1		 basalt
±
15.5
0.2
37.9
0.6
23
5
6.24
0.10
2.07
0.04
0.95
0.05
1.97
0.05
0.268
0.015
4.58
0.10
1.17
0.05
<5
<10
1.18
0.08
0.41
0.12
NIST
SRM 688		 basalt
±
5.18
0.05
12.0
0.4
8
4
2.39
0.04
0.98
0.02
0.498
0.03
2.03
0.05
0.303
0.016
1.55
0.04
0.27
0.04
<5
7
4
0.28
0.04
0.32
0.12
USGS
AGV-1		 andesite
±
38.7
0.4
69.2
1.0
31
6
5.89
0.10
1.59
0.02
0.60
0.03
1.64
0.04
0.243
0.015
5.41
0.08
0.82
0.03
<5
<5
6.10
0.10
2.0
0.2
GSJ
JA-2		 andesite
±
16.0
0.2
33.7
0.5
14
4
3.12
0.05
0.89
0.02
0.47
0.03
1.66
0.04
0.245
0.010
3.08
0.08
0.64
0.03
1.3
0.7
<5
4.83
0.10
2.26
0.12
NIST
SRM 278		 obsidian
±
30.0
0.3
61.6
1.0
26
4
5.78
0.10
0.767
0.012
0.96
0.04
4.47
0.10
0.68
0.02
8.09
0.10
1.26
0.05
2.3
0.6
16
2
11.7
0.2
4.5
0.2
GSJ
JG-1a		 granodiorite
±
21.5
0.2
46.1
0.6
19
4
4.53
0.06
0.673
0.012
0.76
0.03
2.90
0.06
0.432
0.012
3.91
0.05
1.66
0.06
14.3
0.8
<5
12.2
0.2
4.23
0.06
GSJ
JG-3		 granodiorite
±
19.9
0.2
40.1
0.6
16
4
3.26
0.05
0.812
0.016
0.433
0.016
1.66
0.03
0.262
0.010
4.155
0.010
0.56
0.02
14.1
0.8
<5
7.95
0.16
2.35
0.12
GSJ
JG-2		 granite
±
18.5
0.2
47.1
0.6
23
5
7.77
0.10
0.087
0.003
1.86
0.05
8.32
0.10
1.21
0.03
5.17
0.07
2.35
0.06
29.6
1.0
<5.
32.4
0.6
11.2
0.6
USGS
QLO-1		 quartz latite
±
26.8
0.3
50.8
0.8
22
3
4.64
0.07
1.26
0.02
0.64
0.03
2.43
0.05
0.375
0.010
4.83
0.06
0.77
0.03
<8
<10
4.52
0.07
1.84
0.12
USGS
STM-1		 neph. syenite
±
150
2
262
4
77
8
12.1
0.2
3.39
0.04
1.43
0.08
4.34
0.08
0.67
0.02
29.3
0.4
17.1
0.4
<10
<15
29.4
0.4
8.7
0.4
USGS
SCO-1		 shale
±
29.3
0.4
56.7
0.9
25
4
5.13
0.08
1.08
0.02
0.68
0.03
2.26
0.07
0.340
0.012
4.76
0.06
0.80
0.04
2.3
0.6
<5
8.98
0.10
3.0
0.2
USGS
SGR-1		 shale
±
18.7
0.3
34.6
0.5
14
3
2.67
0.06
0.466
0.007
0.296
0.016
0.97
0.03
0.148
0.008
1.42
0.04
0.393
0.016
2.6
0.8
8.7
1.2
4.50
0.07
5.2
0.4
USGS
SDC-1		 mica schist
±
42.2
0.5
90.6
1.5
39
5
8.27
0.10
1.59
0.02
1.10
0.04
4.26
0.08
0.63
0.02
8.56
0.10
1.19
0.04
<10
<10
11.3
0.2
2.8
0.4
NIST
SRM 692		 Fe ore
±
13.4
0.2
38.9
0.6
11
4
1.92
0.03
0.51
0.02
0.27
0.03
0.89
0.04
0.130
0.015
0.46
0.04
0.21
0.05
3.4
0.8
<15
0.71
0.05
0.82
0.10
NIST
SRM 1c		 limestone
±
4.53
0.05
7.28
0.15
4.3
1.2
0.83
0.03
0.157
0.005
0.116
0.008
0.388
0.015
0.059
0.003
0.77
0.04
0.086
0.006
<0.5
1.0
0.5
0.95
0.03
1.39
0.08
GIT-IWG
AN-G		 anorthosite
±
2.20
0.03
4.74
0.10
<10
0.74
0.02
0.362
0.006
0.184
0.012
0.80
0.03
0.118
0.005
0.40
0.04
0.16
0.02
110
2
<3
0.04
0.02
<0.2
GSJ
JF-2		 feldspar
±
0.51
0.03
0.50
0.05
<2.
0.075
0.003
0.579
0.012
0.009
0.004
0.030
0.007
0.005
0.002
0.122
0.010
0.028
0.003
3.3
0.5
<2
0.243
0.010
0.06
0.03
GSJ
JP-1		 peridotite
±
0.025
0.004
<2.
<10
0.008
0.003
<0.01
<0.04
0.030
0.016
0.006
0.003
0.12
0.03
<0.08
0.8
0.3
<10.
<0.2
<0.3
   
La
µg/g
Ce
µg/g
Nd
µg/g
Sm
µg/g
Eu
µg/g
Tb
µg/g
Yb
µg/g
Lu
µg/g
Hf
µg/g
Ta
µg/g
W
µg/g
Au
ng/g
Th
µg/g
U
µg/g

Abbreviations:

FeOT = total Fe as FeO
± = one-standard-deviation estimate of analytical precision
USGS = U. S. Geological Survey
NIST = National Institute of Standards and Technology (formerly, National Bureau of Standards)
GSJ = Geological Survey of Japan
GIT-IWG = International Working Group (France)

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Last revised: 24-Jan-2007