"Table T10. USGS standards treated as unknowns using average counts on each standard, XRF3.",,,,,,,,,,,,
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  XRF3,,,,,,,,,,,,
SiO2,47.77,47.17,48.45,48.45,49.94,48.98,49.57,49.57,54.11,55.86,53.8,53.8
TiO2,0.96,0.93,0.95,0.95,2.71,2.67,2.64,2.64,2.24,2.34,2.32,2.32
Al2O3,15.35,15.91,15.2,15.2,13.8,13.26,13.67,13.67,13.65,13.71,13.93,13.93
FeO,10.25,10.42,10.56,10.56,11.12,10.79,10.86,10.86,12.11,12.3,12.06,12.06
MnO,0.171,0.173,0.173,0.173,0.168,0.16,0.168,0.168,0.18,0.186,0.178,0.178
MgO,9.68,10.86,9.79,9.8,7.23,7.21,6.91,6.9,3.48,3.12,3.7,3.65
CaO,13.24,13.58,13.36,13.36,11.4,11.26,11.18,11.18,6.95,6.87,7.05,7.05
K2O,0.027,0.012,0.044,0.044,0.52,0.5,0.5,0.5,1.69,1.77,1.69,1.69
P2O5,0.05,0.05,0.05,0.05,0.27,0.24,0.26,0.26,0.36,0.35,0.37,0.37
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,382,369,380,380,289,300,280,280,16,128,27,27
Total,99.32,100.92,100.39,100.41,99.47,97.39,98.07,98.05,98.04,99.77,98.37,98.32
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30 KV  XRF3,,,,,,,,,,,,
K2O,0.027,0.06,0.04,0.04,0.42,0.43,0.41,0.41,1.46,1.51,1.47,1.47
CaO,13.24,13.99,13.33,13.33,11.77,12.01,11.55,11.55,7.84,8,7.95,7.95
TiO2,0.96,0.94,0.95,0.95,2.36,2.33,2.24,2.24,2.33,2.54,2.43,2.43
MnO,0.171,0.176,0.172,0.173,0.169,0.164,0.169,0.169,0.178,0.191,0.177,0.177
FeO,10.25,10.64,10.62,10.63,10.94,10.77,10.7,10.71,11.91,12.58,11.85,11.85
Co ppm,51,41,49,49,46,44,45,45,39,47,41,41
Ni ppm,166,151,163,163,130,141,120,120,35,123,43,44
Cu ppm,126,138,144,144,134,109,114,114,42,42,46,46
Zn ppm,71,85,75,76,98,99,97,97,125,115,123,123
Rb ppm,0.27,55.7,45.2*,23.8*,8.9,18.7,18.2,12.9,40,48.5,40,21.7*
Sr ppm,108,118,108,108,344,333,333,333,345,352,353,353
Y ppm,16,14.5,16.5,16.5,25.3,25.9,25,25,35.9,40.1,35.6,35.6
Zr ppm,22,24,23,24,148,142,142,142,188,190,190,190
Nb ppm,2,5.6,4.2,4.2,15.6,16.9,15.6,15.6,15,15.1,13.8,13.7
Cr ppm,382,403,375,392,308,308,307,282,71,135,184*,84
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50 KV  XRF3,,,,,,,,,,,,
CaO,13.24,13.6,13.37,13.37,11.77,11.73,11.49,11.49,7.84,8.18,7.94,7.94
FeO,10.25,10.68,10.6,10.6,10.94,10.88,10.73,10.73,11.91,12.71,11.86,11.86
Ni ppm,166,149,113*,113*,130,141,93*,93*,35,144,99*,99*
Rb ppm,0.27,39.6,24.1,24.1,8.9,17,10.9,10.9,40,37.6,22.9,22.9
Sr ppm,108,121,109,109,344,326,330,330,345,350,355,355
Y ppm,16,14.7,16.8,16.8,25.3,25.8,25,25,35.9,39.9,35.5,35.5
Zr ppm ,22,25,23,23,148,136,141,141,188,183,191,191
Nb ppm ,2,1.9,2.8,2.8,15.6,16.7,15.6,15.6,15,15.3,14.4,14.4
Ba ppm ,8,59,16,16,113,138,108,108,573,533,570,570