Specifications
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CRM State:
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Matrix:
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Mineralisation:
OREAS 45e was prepared from lateritic soil containing anomalous precious and base metal content. The soil is developed over a Ni-Cu-PGE mineralised contact between gabbro and pyroxenite in a layered mafic intrusive from the Southern Murchison region of Western Australia.
Twenty commercial analytical laboratories participated in the program to characterise the elements reported below. The following methods were employed:
Analyte | Certified Value | 1SD | 95% Confidence Limits Low | 95% Confidence Limits High | Method |
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Au, Gold (ppb) | 53 | 2.7 | 52 | 54 | Pb Fire Assay |
Ni, Nickel (ppm) | 454 | 25 | 442 | 465 | 4-Acid Digestion |
Cu, Copper (ppm) | 780 | 23 | 771 | 790 | 4-Acid Digestion |
Ag, Silver (ppm) | 0.311 | 0.062 | 0.269 | 0.353 | 4-Acid Digestion |
Al, Aluminium (wt.%) | 6.78 | 0.170 | 6.69 | 6.86 | 4-Acid Digestion |
As, Arsenic (ppm) | 16.3 | 1.53 | 15.7 | 16.9 | 4-Acid Digestion |
Ba, Barium (ppm) | 252 | 12 | 247 | 258 | 4-Acid Digestion |
Be, Beryllium (ppm) | 0.62 | 0.11 | 0.56 | 0.68 | 4-Acid Digestion |
Bi, Bismuth (ppm) | 0.28 | 0.03 | 0.26 | 0.30 | 4-Acid Digestion |
Ca, Calcium (wt.%) | 0.065 | 0.006 | 0.062 | 0.067 | 4-Acid Digestion |
Ce, Cerium (ppm) | 23.5 | 2.20 | 22.1 | 24.8 | 4-Acid Digestion |
Co, Cobalt (ppm) | 57 | 3.9 | 55 | 59 | 4-Acid Digestion |
Cr, Chromium (ppm) | 979 | 74 | 941 | 1018 | 4-Acid Digestion |
Cs, Caesium (ppm) | 1.26 | 0.049 | 1.23 | 1.29 | 4-Acid Digestion |
Dy, Dysprosium (ppm) | 2.05 | 0.200 | 1.81 | 2.29 | 4-Acid Digestion |
Er, Erbium (ppm) | 1.20 | 0.14 | 1.03 | 1.36 | 4-Acid Digestion |
Fe, Iron (wt.%) | 24.12 | 1.322 | 23.44 | 24.79 | 4-Acid Digestion |
Ga, Gallium (ppm) | 16.5 | 1.23 | 15.7 | 17.2 | 4-Acid Digestion |
Gd, Gadolinium (ppm) | 1.99 | 0.27 | 1.65 | 2.34 | 4-Acid Digestion |
Hf, Hafnium (ppm) | 3.11 | 0.144 | 3.05 | 3.17 | 4-Acid Digestion |
In, Indium (ppm) | 0.099 | 0.008 | 0.094 | 0.103 | 4-Acid Digestion |
K, Potassium (wt.%) | 0.324 | 0.008 | 0.320 | 0.328 | 4-Acid Digestion |
La, Lanthanum (ppm) | 11.0 | 0.97 | 10.4 | 11.5 | 4-Acid Digestion |
Li, Lithium (ppm) | 6.58 | 0.490 | 6.36 | 6.80 | 4-Acid Digestion |
Lu, Lutetium (ppm) | 0.17 | 0.03 | 0.14 | 0.20 | 4-Acid Digestion |
Mg, Magnesium (wt.%) | 0.156 | 0.012 | 0.150 | 0.161 | 4-Acid Digestion |
Mn, Manganese (wt.%) | 0.055 | 0.003 | 0.054 | 0.057 | 4-Acid Digestion |
Mo, Molybdenum (ppm) | 2.40 | 0.157 | 2.35 | 2.45 | 4-Acid Digestion |
Na, Sodium (wt.%) | 0.059 | 0.003 | 0.058 | 0.061 | 4-Acid Digestion |
Nb, Niobium (ppm) | 6.80 | 0.180 | 6.73 | 6.87 | 4-Acid Digestion |
Nd, Neodymium (ppm) | 9.57 | 1.28 | 8.20 | 10.94 | 4-Acid Digestion |
P, Phosphorus (wt.%) | 0.034 | 0.002 | 0.033 | 0.036 | 4-Acid Digestion |
Pb, Lead (ppm) | 18.2 | 1.9 | 17.4 | 19.1 | 4-Acid Digestion |
Pr, Praseodymium (ppm) | 2.57 | 0.38 | 2.07 | 3.06 | 4-Acid Digestion |
Rb, Rubidium (ppm) | 21.2 | 1.18 | 20.6 | 21.9 | 4-Acid Digestion |
S, Sulphur (wt.%) | 0.046 | 0.005 | 0.043 | 0.048 | 4-Acid Digestion |
Sb, Antimony (ppm) | 1.00 | 0.096 | 0.94 | 1.05 | 4-Acid Digestion |
Sc, Scandium (ppm) | 93 | 4.6 | 91 | 95 | 4-Acid Digestion |
Se, Selenium (ppm) | 2.97 | 0.223 | 2.85 | 3.09 | 4-Acid Digestion |
Sm, Samarium (ppm) | 2.28 | 0.133 | 2.16 | 2.41 | 4-Acid Digestion |
Sn, Tin (ppm) | 1.32 | 0.074 | 1.28 | 1.36 | 4-Acid Digestion |
Sr, Strontium (ppm) | 15.9 | 0.81 | 15.5 | 16.3 | 4-Acid Digestion |
Ta, Tantalum (ppm) | 0.56 | 0.06 | 0.53 | 0.60 | 4-Acid Digestion |
Th, Thorium (ppm) | 12.9 | 1.04 | 12.3 | 13.5 | 4-Acid Digestion |
Ti, Titanium (wt.%) | 0.559 | 0.034 | 0.540 | 0.578 | 4-Acid Digestion |
Tl, Thallium (ppm) | 0.15 | 0.03 | 0.13 | 0.17 | 4-Acid Digestion |
U, Uranium (ppm) | 2.41 | 0.189 | 2.31 | 2.50 | 4-Acid Digestion |
V, Vanadium (ppm) | 322 | 15 | 314 | 330 | 4-Acid Digestion |
W, Tungsten (ppm) | 1.07 | 0.21 | 0.94 | 1.19 | 4-Acid Digestion |
Y, Yttrium (ppm) | 8.28 | 0.558 | 7.96 | 8.60 | 4-Acid Digestion |
Yb, Ytterbium (ppm) | 1.19 | 0.12 | 1.06 | 1.32 | 4-Acid Digestion |
Zn, Zinc (ppm) | 46.7 | 5.7 | 43.7 | 49.6 | 4-Acid Digestion |
Zr, Zirconium (ppm) | 110 | 14 | 102 | 118 | 4-Acid Digestion |
Al, Aluminium (wt.%) | 3.32 | 0.260 | 3.18 | 3.46 | Aqua Regia Digestion |
As, Arsenic (ppm) | 11.4 | 1.7 | 10.6 | 12.2 | Aqua Regia Digestion |
Au, Gold (ppm) | 0.050 | 0.006 | 0.047 | 0.054 | Aqua Regia Digestion |
Ba, Barium (ppm) | 139 | 9 | 134 | 143 | Aqua Regia Digestion |
Ca, Calcium (wt.%) | 0.032 | 0.003 | 0.031 | 0.034 | Aqua Regia Digestion |
Ce, Cerium (ppm) | 17.7 | 2.3 | 15.4 | 19.9 | Aqua Regia Digestion |
Co, Cobalt (ppm) | 52 | 6 | 49 | 55 | Aqua Regia Digestion |
Cr, Chromium (ppm) | 849 | 71 | 810 | 888 | Aqua Regia Digestion |
Cs, Caesium (ppm) | 0.77 | 0.11 | 0.63 | 0.91 | Aqua Regia Digestion |
Cu, Copper (ppm) | 709 | 52 | 682 | 737 | Aqua Regia Digestion |
Fe, Iron (wt.%) | 22.65 | 1.333 | 21.94 | 23.35 | Aqua Regia Digestion |
Ga, Gallium (ppm) | 11.7 | 1.7 | 10.7 | 12.7 | Aqua Regia Digestion |
In, Indium (ppm) | 0.090 | 0.008 | 0.080 | 0.100 | Aqua Regia Digestion |
K, Potassium (wt.%) | 0.053 | 0.005 | 0.050 | 0.055 | Aqua Regia Digestion |
Mg, Magnesium (wt.%) | 0.095 | 0.007 | 0.092 | 0.098 | Aqua Regia Digestion |
Mn, Manganese (wt.%) | 0.040 | 0.003 | 0.038 | 0.042 | Aqua Regia Digestion |
Na, Sodium (wt.%) | 0.027 | 0.005 | 0.025 | 0.030 | Aqua Regia Digestion |
Ni, Nickel (ppm) | 357 | 26 | 343 | 371 | Aqua Regia Digestion |
P, Phosphorus (wt.%) | 0.029 | 0.002 | 0.028 | 0.031 | Aqua Regia Digestion |
Pb, Lead (ppm) | 14.3 | 2.4 | 12.9 | 15.6 | Aqua Regia Digestion |
Rb, Rubidium (ppm) | 7.93 | 1.25 | 6.72 | 9.15 | Aqua Regia Digestion |
S, Sulphur (wt.%) | 0.044 | 0.005 | 0.040 | 0.047 | Aqua Regia Digestion |
Sc, Scandium (ppm) | 78 | 5.5 | 74 | 81 | Aqua Regia Digestion |
Sn, Tin (ppm) | 0.97 | 0.10 | 0.86 | 1.08 | Aqua Regia Digestion |
Sr, Strontium (ppm) | 4.05 | 0.78 | 3.60 | 4.50 | Aqua Regia Digestion |
Th, Thorium (ppm) | 10.7 | 0.83 | 10.0 | 11.4 | Aqua Regia Digestion |
Tl, Thallium (ppm) | 0.072 | 0.007 | 0.063 | 0.080 | Aqua Regia Digestion |
U, Uranium (ppm) | 1.73 | 0.18 | 1.58 | 1.89 | Aqua Regia Digestion |
V, Vanadium (ppm) | 295 | 15 | 286 | 305 | Aqua Regia Digestion |
Y, Yttrium (ppm) | 5.74 | 0.80 | 5.16 | 6.33 | Aqua Regia Digestion |
Yb, Ytterbium (ppm) | 0.86 | 0.13 | 0.68 | 1.04 | Aqua Regia Digestion |
Zn, Zinc (ppm) | 30.6 | 4.8 | 28.1 | 33.1 | Aqua Regia Digestion |
Pd, Palladium (ppb) | 75.4 | 4.7 | 73.2 | 77.5 | Pb Fire Assay |
Pt, Platinum (ppb) | 110 | 6 | 107 | 112 | Pb Fire Assay |
Al, Aluminium (wt.%) | 6.78 | 0.167 | 6.70 | 6.86 | Borate / Peroxide Fusion ICP |
Ba, Barium (ppm) | 246 | 8 | 242 | 251 | Borate / Peroxide Fusion ICP |
Ca, Calcium (wt.%) | 0.063 | 0.011 | 0.058 | 0.068 | Borate / Peroxide Fusion ICP |
Ce, Cerium (ppm) | 23.5 | 0.92 | 22.8 | 24.2 | Borate / Peroxide Fusion ICP |
Co, Cobalt (ppm) | 59 | 4.7 | 56 | 61 | Borate / Peroxide Fusion ICP |
Cr, Chromium (ppm) | 1067 | 46 | 1046 | 1088 | Borate / Peroxide Fusion ICP |
Cs, Caesium (ppm) | 1.20 | 0.106 | 1.15 | 1.25 | Borate / Peroxide Fusion ICP |
Cu, Copper (ppm) | 756 | 44 | 731 | 781 | Borate / Peroxide Fusion ICP |
Dy, Dysprosium (ppm) | 2.28 | 0.170 | 2.22 | 2.33 | Borate / Peroxide Fusion ICP |
Er, Erbium (ppm) | 1.41 | 0.086 | 1.38 | 1.45 | Borate / Peroxide Fusion ICP |
Eu, Europium (ppm) | 0.55 | 0.042 | 0.53 | 0.57 | Borate / Peroxide Fusion ICP |
Fe, Iron (wt.%) | 24.19 | 0.567 | 23.91 | 24.47 | Borate / Peroxide Fusion ICP |
Ga, Gallium (ppm) | 16.2 | 0.88 | 15.7 | 16.7 | Borate / Peroxide Fusion ICP |
Gd, Gadolinium (ppm) | 2.00 | 0.128 | 1.95 | 2.05 | Borate / Peroxide Fusion ICP |
Hf, Hafnium (ppm) | 6.31 | 0.416 | 6.04 | 6.59 | Borate / Peroxide Fusion ICP |
Ho, Holmium (ppm) | 0.46 | 0.039 | 0.44 | 0.48 | Borate / Peroxide Fusion ICP |
K, Potassium (wt.%) | 0.336 | 0.024 | 0.325 | 0.346 | Borate / Peroxide Fusion ICP |
La, Lanthanum (ppm) | 11.1 | 0.66 | 10.6 | 11.6 | Borate / Peroxide Fusion ICP |
Lu, Lutetium (ppm) | 0.23 | 0.018 | 0.22 | 0.24 | Borate / Peroxide Fusion ICP |
Mg, Magnesium (wt.%) | 0.158 | 0.010 | 0.153 | 0.162 | Borate / Peroxide Fusion ICP |
Mn, Manganese (wt.%) | 0.056 | 0.002 | 0.055 | 0.057 | Borate / Peroxide Fusion ICP |
Mo, Molybdenum (ppm) | 2.95 | 0.59 | 2.64 | 3.25 | Borate / Peroxide Fusion ICP |
Na, Sodium (wt.%) | 0.058 | 0.005 | 0.054 | 0.061 | Borate / Peroxide Fusion ICP |
Nb, Niobium (ppm) | 7.40 | 0.75 | 6.99 | 7.80 | Borate / Peroxide Fusion ICP |
Nd, Neodymium (ppm) | 9.46 | 0.852 | 8.92 | 9.99 | Borate / Peroxide Fusion ICP |
Ni, Nickel (ppm) | 459 | 31 | 436 | 482 | Borate / Peroxide Fusion ICP |
Pr, Praseodymium (ppm) | 2.50 | 0.094 | 2.44 | 2.56 | Borate / Peroxide Fusion ICP |
Rb, Rubidium (ppm) | 20.8 | 1.29 | 20.0 | 21.6 | Borate / Peroxide Fusion ICP |
Sc, Scandium (ppm) | 91 | 2.6 | 88 | 94 | Borate / Peroxide Fusion ICP |
Si, Silicon (wt.%) | 18.56 | 0.442 | 18.35 | 18.77 | Borate / Peroxide Fusion ICP |
Sm, Samarium (ppm) | 2.13 | 0.166 | 2.06 | 2.20 | Borate / Peroxide Fusion ICP |
Sr, Strontium (ppm) | 15.9 | 1.37 | 15.4 | 16.5 | Borate / Peroxide Fusion ICP |
Ta, Tantalum (ppm) | 0.63 | 0.08 | 0.59 | 0.66 | Borate / Peroxide Fusion ICP |
Tb, Terbium (ppm) | 0.36 | 0.032 | 0.35 | 0.37 | Borate / Peroxide Fusion ICP |
Th, Thorium (ppm) | 13.0 | 0.50 | 12.7 | 13.3 | Borate / Peroxide Fusion ICP |
Ti, Titanium (wt.%) | 0.584 | 0.016 | 0.576 | 0.593 | Borate / Peroxide Fusion ICP |
Tm, Thulium (ppm) | 0.22 | 0.02 | 0.21 | 0.23 | Borate / Peroxide Fusion ICP |
U, Uranium (ppm) | 2.54 | 0.140 | 2.48 | 2.60 | Borate / Peroxide Fusion ICP |
V, Vanadium (ppm) | 317 | 28 | 299 | 336 | Borate / Peroxide Fusion ICP |
W, Tungsten (ppm) | 1.06 | 0.20 | 0.92 | 1.20 | Borate / Peroxide Fusion ICP |
Y, Yttrium (ppm) | 10.6 | 0.66 | 10.1 | 11.0 | Borate / Peroxide Fusion ICP |
Yb, Ytterbium (ppm) | 1.48 | 0.110 | 1.43 | 1.54 | Borate / Peroxide Fusion ICP |
Zr, Zirconium (ppm) | 242 | 14 | 232 | 253 | Borate / Peroxide Fusion ICP |
C, Carbon (wt.%) | 0.546 | 0.026 | 0.532 | 0.561 | Infrared Combustion |
S, Sulphur (wt.%) | 0.043 | 0.006 | 0.040 | 0.046 | Infrared Combustion |
Al2O3, Aluminium(III) oxide (wt.%) | 13.04 | 0.107 | 12.98 | 13.09 | Borate Fusion XRF |
CaO, Calcium oxide (wt.%) | 0.089 | 0.011 | 0.082 | 0.095 | Borate Fusion XRF |
Cr2O3, Chromium(III) oxide (ppm) | 1568 | 63 | 1533 | 1603 | Borate Fusion XRF |
Fe2O3, Iron(III) oxide (wt.%) | 35.46 | 0.292 | 35.32 | 35.60 | Borate Fusion XRF |
K2O, Potassium oxide (wt.%) | 0.405 | 0.006 | 0.403 | 0.407 | Borate Fusion XRF |
MgO, Magnesium oxide (wt.%) | 0.268 | 0.010 | 0.261 | 0.274 | Borate Fusion XRF |
MnO, Manganese oxide (wt.%) | 0.072 | 0.006 | 0.068 | 0.075 | Borate Fusion XRF |
Na2O, Sodium oxide (wt.%) | 0.078 | 0.010 | 0.072 | 0.084 | Borate Fusion XRF |
P2O5, Phosphorus(V) oxide (wt.%) | 0.081 | 0.003 | 0.080 | 0.083 | Borate Fusion XRF |
SiO2, Silicon dioxide (wt.%) | 40.13 | 0.273 | 40.01 | 40.24 | Borate Fusion XRF |
TiO2, Titanium dioxide (wt.%) | 0.989 | 0.021 | 0.976 | 1.001 | Borate Fusion XRF |
V2O5, Vanadium(V) oxide (ppm) | 588 | 15 | 574 | 602 | Borate Fusion XRF |
LOI1000, Loss On Ignition @1000°C (wt.%) | 8.69 | 0.175 | 8.60 | 8.78 | Thermogravimetry |
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