"Table T9. USGS standards treated as unknowns using average counts on each standard, XRF2.",,,,,,,,,,,,
https://doi.org/10.14379/iodp.proc.391.202.2026,,,,,,,,,,,,
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"* = values deviate significantly from reference values for that element, ** = reference value used for Na2O. Columns compare USGS Reference Values to Calculated Values (mass absorption corrected), slope-corrected concentrations, and concentrations derived by traditional regression of tube-line normalized count data.",,,,,,,,,,,,
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,,BIR1,,,,BHVO1,,,,BCR1,,
,Reference value,Calculated (tube-line), Slope corrected,Traditional regressed,Reference value,Calculated (tube-line), Slope corrected,Traditional regressed,Reference value,Calculated (tube-line), Slope corrected,Traditional regressed
10 KV  XRF2,,,,,,,,,,,,
SiO2,47.77,46.353,47.779,47.779,49.94,49.723,49.989,49.989,54.11,55.917,54.052,54.052
TiO2,0.96,0.907,0.945,0.945,2.71,2.705,2.644,2.644,2.24,2.364,2.321,2.321
Al2O3,15.35,15.597,15.293,15.293,13.8,13.482,13.652,13.652,13.65,13.744,13.855,13.855
FeO,10.252,10.219,10.391,10.391,11.118,10.881,10.928,10.928,12.11,12.4,12.161,12.161
MnO,0.171,0.169,0.172,0.172,0.168,0.16,0.169,0.169,0.18,0.19,0.179,0.179
MgO,9.68,11.56,9.744,9.744,7.23,7.728,7.098,7.098,3.48,2.586,3.548,3.548
CaO,13.24,13.421,13.3,13.3,11.4,11.359,11.307,11.307,6.95,6.882,6.983,6.983
K2O,0.027,-0.009,0.045,0.045,0.52,0.483,0.495,0.495,1.69,1.796,1.697,1.697
P2O5,0.046,0.046,0.054,0.054,0.273,0.257,0.253,0.253,0.36,0.384,0.372,0.372
Na2O**,1.82,1.820**,1.820**,1.820**,2.31,2.31,2.31,2.31,3.27,3.27,3.27,3.27
Cr ppm,382,157,394,394,289,114,266,266,16,35,27,27
Total,99.32,98.26,99.54,99.54,99.47,99.09,98.85,98.85,98.04,99.53,98.44,98.44
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30 KV  XRF2,,,,,,,,,,,,
K2O,0.027,0.053,0.066,0.066,0.52,0.522,0.472,0.472,1.69,1.94,1.7,1.7
CaO,13.24,14.64,13.42,13.42,11.4,12,11.07,11.07,6.95,7.57,7.11,7.11
TiO2,0.96,0.98,0.96,0.96,2.71,2.78,2.52,2.52,2.24,2.69,2.44,2.44
MnO,0.171,0.189,0.173,0.173,0.168,0.168,0.168,0.168,0.18,0.207,0.178,0.178
FeO,10.25,10.91,10.58,10.58,11.12,11.33,10.79,10.79,12.11,14.11,12.11,12.11
Co ppm,51,43,50,50,45,46,46,46,37,52,38,38
Ni ppm,166,158,164,164,121,145,106,106,13,127,30*,30*
Cu ppm,126,137,142,142,136,110,114,114,19,26,25,25
Zn ppm,71,87,74,74,105,108,102,102,130,128,129,129
Rb ppm,0.27,7.9,1.6,1.6,11,13.8,9.6,9.6,47.2,41.9,47.2,47.2
Sr ppm,108,122,106,106,403,403,385,385,330,368,350,350
Y ppm,16,18.5,17.1,17.1,27.6,28.9,27.1,27.1,38,39.8,37.4,37.4
Zr ppm,22,24,24,24,179,183,169,169,190,215,198,198
Nb ppm,2,4.5,3.1,3.1,19,20.6,18.7,18.7,14,14.9,13.2,13.2
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50 KV  XRF2,,,,,,,,,,,,
CaO,13.24,14.07,13.44,13.44,11.4,11.53,10.81,10.81,6.95,8.15,7.34,7.34
FeO,10.25,10.87,10.59,10.59,11.12,11.28,10.78,10.78,12.11,14.22,12.11,12.11
Ni ppm,166,36,103*,103*,121,35,97,97,13,36,100*,100*
Rb ppm,0.27,13.06,6.09*,8.24*,11,13.6,6.7,6.7,47.2,43.1,45.6,45.6
Sr ppm,108,126,108,108,403,393,379,379,330,367,353,353
Y ppm,16,20,18.9,18.9,27.6,27.1,25.7,25.7,38,38.9,37,37
Zr ppm,22,34,25,25,179,145,168,168,190,169,198,198
Nb ppm,2,5.1,3.8,3.8,19,17.9,16,16,14,17,15.2,15.2
Ba ppm,8,20,22,22,139,51,125,125,681,220,680,680