Specifications
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CRM State:
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Matrix:
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Mineralisation:
OREAS 26b is a basalt blank chip certified reference material. The material was sourced from a quarry containing fresh olivine tholeiite (Newer Volcanics Province), near Melbourne (Victoria), Australia. There are 52 certified values by borate fusion XRF, LOI at 1000°C, Au by fire assay and full ICP-OES/MS suite by 4-acid digestion. Detailed certification data is available for this CRM (OREAS 26b Datapack.xlsx).
Analyte | Certified Value | 1SD | 95% Confidence Limits Low | 95% Confidence Limits High | Method |
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Au, Gold (ppb) | < 1 | IND | IND | IND | Pb Fire Assay |
Cu, Copper (ppm) | 43.7 | 2.54 | 42.5 | 45.0 | 4-Acid Digestion |
Fe, Iron (wt.%) | 8.05 | 0.057 | 8.01 | 8.08 | Borate Fusion XRF |
Al2O3, Aluminium(III) oxide (wt.%) | 14.39 | 0.088 | 14.33 | 14.45 | Borate Fusion XRF |
CaO, Calcium oxide (wt.%) | 8.57 | 0.051 | 8.53 | 8.61 | Borate Fusion XRF |
Cr2O3, Chromium(III) oxide (ppm) | 524 | 41 | 509 | 540 | Borate Fusion XRF |
K2O, Potassium oxide (wt.%) | 0.833 | 0.006 | 0.830 | 0.837 | Borate Fusion XRF |
MgO, Magnesium oxide (wt.%) | 7.38 | 0.120 | 7.30 | 7.45 | Borate Fusion XRF |
MnO, Manganese oxide (wt.%) | 0.149 | 0.003 | 0.147 | 0.151 | Borate Fusion XRF |
Na2O, Sodium oxide (wt.%) | 3.16 | 0.028 | 3.14 | 3.18 | Borate Fusion XRF |
P2O5, Phosphorus(V) oxide (wt.%) | 0.334 | 0.008 | 0.329 | 0.339 | Borate Fusion XRF |
SiO2, Silicon dioxide (wt.%) | 51.22 | 0.183 | 51.12 | 51.31 | Borate Fusion XRF |
TiO2, Titanium dioxide (wt.%) | 1.85 | 0.016 | 1.84 | 1.86 | Borate Fusion XRF |
LOI1000, Loss On Ignition @1000°C (wt.%) | 0.535 | 0.087 | 0.484 | 0.586 | Thermogravimetry |
Al, Aluminium (wt.%) | 7.47 | 0.163 | 7.33 | 7.61 | 4-Acid Digestion |
Ba, Barium (ppm) | 255 | 7 | 250 | 259 | 4-Acid Digestion |
Be, Beryllium (ppm) | 0.99 | 0.054 | 0.97 | 1.02 | 4-Acid Digestion |
Ca, Calcium (wt.%) | 5.92 | 0.224 | 5.76 | 6.09 | 4-Acid Digestion |
Ce, Cerium (ppm) | 36.3 | 0.91 | 35.6 | 36.9 | 4-Acid Digestion |
Co, Cobalt (ppm) | 44.4 | 1.76 | 43.2 | 45.6 | 4-Acid Digestion |
Cr, Chromium (ppm) | 293 | 43 | 261 | 325 | 4-Acid Digestion |
Cs, Caesium (ppm) | 0.67 | 0.07 | 0.61 | 0.72 | 4-Acid Digestion |
Fe, Iron (wt.%) | 7.74 | 0.271 | 7.53 | 7.95 | 4-Acid Digestion |
Ga, Gallium (ppm) | 20.2 | 0.69 | 19.7 | 20.7 | 4-Acid Digestion |
Hf, Hafnium (ppm) | 3.50 | 0.199 | 3.34 | 3.66 | 4-Acid Digestion |
In, Indium (ppm) | 0.061 | 0.004 | 0.059 | 0.063 | 4-Acid Digestion |
K, Potassium (wt.%) | 0.679 | 0.021 | 0.664 | 0.695 | 4-Acid Digestion |
La, Lanthanum (ppm) | 17.4 | 0.56 | 16.9 | 17.9 | 4-Acid Digestion |
Li, Lithium (ppm) | 6.38 | 0.600 | 5.73 | 7.03 | 4-Acid Digestion |
Mg, Magnesium (wt.%) | 4.30 | 0.143 | 4.20 | 4.41 | 4-Acid Digestion |
Mn, Manganese (wt.%) | 0.110 | 0.006 | 0.106 | 0.114 | 4-Acid Digestion |
Mo, Molybdenum (ppm) | 1.43 | 0.078 | 1.38 | 1.49 | 4-Acid Digestion |
Na, Sodium (wt.%) | 2.34 | 0.099 | 2.27 | 2.42 | 4-Acid Digestion |
Nb, Niobium (ppm) | 21.3 | 0.80 | 20.9 | 21.8 | 4-Acid Digestion |
Ni, Nickel (ppm) | 149 | 3 | 147 | 151 | 4-Acid Digestion |
P, Phosphorus (wt.%) | 0.141 | 0.003 | 0.139 | 0.144 | 4-Acid Digestion |
Pb, Lead (ppm) | 2.81 | 0.32 | 2.56 | 3.06 | 4-Acid Digestion |
Rb, Rubidium (ppm) | 20.1 | 0.69 | 19.6 | 20.6 | 4-Acid Digestion |
S, Sulphur (wt.%) | 0.010 | 0.002 | 0.009 | 0.011 | 4-Acid Digestion |
Sc, Scandium (ppm) | 19.6 | 1.24 | 18.7 | 20.5 | 4-Acid Digestion |
Sn, Tin (ppm) | 1.83 | 0.31 | 1.64 | 2.02 | 4-Acid Digestion |
Sr, Strontium (ppm) | 412 | 17 | 400 | 423 | 4-Acid Digestion |
Ta, Tantalum (ppm) | 1.36 | 0.123 | 1.26 | 1.45 | 4-Acid Digestion |
Th, Thorium (ppm) | 2.60 | 0.097 | 2.54 | 2.66 | 4-Acid Digestion |
Ti, Titanium (wt.%) | 1.06 | 0.032 | 1.03 | 1.08 | 4-Acid Digestion |
Tl, Thallium (ppm) | 0.059 | 0.008 | 0.054 | 0.065 | 4-Acid Digestion |
U, Uranium (ppm) | 0.65 | 0.057 | 0.61 | 0.69 | 4-Acid Digestion |
V, Vanadium (ppm) | 155 | 10 | 147 | 162 | 4-Acid Digestion |
W, Tungsten (ppm) | 0.50 | 0.07 | 0.45 | 0.55 | 4-Acid Digestion |
Y, Yttrium (ppm) | 21.2 | 0.77 | 20.6 | 21.8 | 4-Acid Digestion |
Zn, Zinc (ppm) | 110 | 5 | 107 | 114 | 4-Acid Digestion |
Zr, Zirconium (ppm) | 135 | 7 | 129 | 140 | 4-Acid Digestion |
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