Table T1. Comparison of analytical results for interlaboratory samples prepared from Leg 193 core material.
Sample
Laboratory
Method
Major element oxide
(wt%)
Trace element
(ppm)
SiO2
TiO2
Al2O3
Fe2O3
MgO
CaO
MnO
Na2O
K2O
P2O5
LOI
Total
S total*
Li
Be
Cl*
Ge
Se
Br
In
1188B
CSIRO
ICP-AES 64.86 0.55 13.14 4.15 3.93 1.25 0.06 2.22 0.39 0.15 4.76 95.46 24,960 <5 <2




XRF 64.85 0.55 13.32 4.4 3.92 1.28 0.06 2.35 0.37 0.14 4.76 96 20,190

520



ICP-MS















1.9

130
NAA


4.7


2.4 <0.24







<5 2.7
TU Freiberg
XRF 67.11 0.6 13.66 4.99 3.99 1.31 0.06 2.17 0.4 0.14 3.7 98.13 25,400






ICP-MS
0.63
5.7

0.05












TAMU
ICP-AES 65.7 0.59 13.3 4.6 3.91 1.33 0.06 2.29 0.38 0.16 3.9 96.22







ICP-MS



















1191A
CSIRO
ICP-AES 66.76 0.59 13.81 4.29 0.83 2.89 0.12 4.83 1.73 0.14 1.46 97.45 274 13 <2




XRF 67.57 0.6 13.93 4.57 0.87 2.92 0.13 5.09 1.71 0.13 1.46 98.98 120

5,870



ICP-MS















2.5

70
NAA






5.2 1.3







<5 13.5
TU Freiberg
XRF 68.22 0.63 14.1 4.72 0.83 2.96 0.13 4.83 1.74 0.13 1.44 99.73 400






ICP-MS
0.7
5.9

0.11












TAMU
ICP-AES 68.08 0.63 13.91 4.73 0.89 3.02 0.12 4.88 1.76 0.13 1.5 99.65







ICP-MS



















Sample
Laboratory
Method
Trace element
(ppm)
Te
Hg
Cs
Ba
Cu
Pb
Zn
Ag
As
Bi
Cd
Cr
Co
Ga
Hf
Mo
Nb
Ni
Rb
1188B
CSIRO
ICP-AES


139 111 <50 143 <5 <25
<5 15 6

<5
<10
XRF


107 115 37 136



<10 <10 17

<4 <10 <5
ICP-MS 0.33
0.31

21.2

14.1 0.026 0.28 15 4.9 16.1
2.1
6.2 3.8
NAA <1 <5
135

139 <5 16.2
<20 17.1 5.3
3.5 <5

<20
TU Freiberg
XRF


134

150










7
ICP-MS

0.3 231 108 26 393 <0.5 17.7 <5 <0.5 29.3 4.4 16.4 2.3 0.89 1.4 9 4
TAMU
ICP-AES


140














ICP-MS



121 21 132




4.5 14.7 3.5
1.5 6.2 3.3
1191A
CSIRO
ICP-AES


348 18 <50 81 <5 <25
<5 13 5

<5
<10
XRF


285 18 15 74



<10 <10 17

<4 <10 20
ICP-MS <0.17
0.69

5.1

13.9 0.043 0.28 13.8 4.9 16.9
2.1
3.2 27.2
NAA <1 <5 0.7 352

<100 <5 3.2
<20 12.4 4.9
3.6 <5

29
TU Freiberg
XRF


376

83










28
ICP-MS


411 33 6 300 <0.5 4.5 <5 <0.5 13.5 5.1 18.8 3.7 1.27 1.62 6 31
TAMU
ICP-AES


353














ICP-MS



14 5.6 79




5.2 16.7 3.7
1.7 2.7 28.5

Sample
Laboratory
Method
Trace element
(ppm)
Sb
Sc
Sr
Ta
Th
Tl
U
V
Y
Zr
La
Ce
Pr
Nd
Sm
Eu
Gd
Tb
Dy
Ho
1188B
CSIRO
ICP-AES <50 6 142



28 13 57 11








XRF

160



23 31 111 <10 25







ICP-MS 0.77 6.3

0.65 0.14 0.43 31.4 12.9
9.6 22.7 3.3 13.8 3.3 0.93 2.9 0.47 2.4 0.51
NAA 0.61 12
<1 1.19



<500 9.9 22.4

3.9 1.16



TU Freiberg
XRF

153




33 102









ICP-MS 0.6 9.4 160
1.22 0.09 0.55 26 21 67









TAMU
ICP-AES
11.5

















ICP-MS

161 0.1


27.5 30.8 102 10.3 22.7 3.2 13.9 4.4 1.13 4.4 0.66 2.89 1.04
1191A
CSIRO
ICP-AES
10 246



22 31 130 13








XRF

264



29 33 114 <10 31







ICP-MS 0.15 10.9

1.18 0.21 0.66 25.4 32.3
11.1 24.8 3.6 16.5 4.3 1.27 2.9 0.47 2.4 0.51
NAA <0.2 11.6
<1 1.14



<500 10.8 25.3

4.3 1.25



TU Freiberg
XRF

255




35 110









ICP-MS <0.5 16.1 308
1.74 0.21 0.62 21 38 124 11.1 22.9 3.4 14.8 4.1 1.13 4.55 0.73 4.96 1.08
TAMU
ICP-AES
11.5

















ICP-MS

304 0.1


24 37.4 119 11.3 24.8 3.5 17.4 4.4 1.32 4.67 0.89 5.36 1.24

Sample
Laboratory
Method
Trace element
(ppm)
Trace element
(ppb)
Er
Tm
Yb
Lu
Ir
Au
1188B
CSIRO
ICP-AES

<2


XRF





ICP-MS 1.3 0.19 1.2 0.19

NAA

3.3 0.47 <20 5.6
TU Freiberg
XRF





ICP-MS





TAMU
ICP-AES





ICP-MS 2.14 0.28 2.44 0.38
5.8
1191A
CSIRO
ICP-AES





XRF

4


ICP-MS 3.5 0.53 3.6 0.58

NAA

3.6 0.52 <20 <5
TU Freiberg
XRF





ICP-MS 3.3 0.5 3.5 0.54

TAMU
ICP-AES





ICP-MS 3.66 0.53 3.7 0.64

Notes: Sample 1188B is pervasively hydrothermally altered dacite. Sample 1191A is fresh, aphyric rhyodacite. CSIRO = Commonwealth Scientific and Industrial Research Organisation, TU Freiberg = Technische Universitšt Berkakademie Freiberg, TAMU = Acme Analytical Laboratories. ICP-AES = inductively coupled plasma–atomic emission spectrometer, XRF = X-ray fluorescence, ICP-MS = inductively coupled plasma–magnetic spectrometer, NAA = neutron activation analysis. * = possible loss in fusion. † = uncertain value.