Specifications
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CRM State:
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Matrix:
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Mineralisation:
OREAS 289 is one of a suite of six gold ore CRMs (OREAS 284 to OREAS 289) prepared from a blend of Yalea ore and barren granodiorite. The ore was sourced from the Loulo-Gounkoto Complex in Western Mali.
The certification program includes:
Analyte | Certified Value | 1SD | Expanded Uncertainty Low | Expanded Uncertainty High | Method |
---|---|---|---|---|---|
Au, Gold (ppm) | 5.71 | 0.202 | 5.65 | 5.78 | Pb Fire Assay |
Au, Gold (ppm) | 5.73 | 0.125 | 5.68 | 5.78 | PhotonAssay |
Au, Gold (ppm) | 5.51 | 0.327 | 5.37 | 5.66 | Aqua Regia Digestion (sample weights 10-50g) |
Au, Gold (ppm) | 5.17 | 0.209 | 5.08 | 5.27 | Cyanide Leach |
Ag, Silver (ppm) | 0.239 | 0.018 | 0.211 | 0.268 | 4-Acid Digestion |
Al, Aluminium (wt.%) | 5.96 | 0.240 | 5.75 | 6.17 | 4-Acid Digestion |
As, Arsenic (ppm) | 7080 | 353 | 6814 | 7347 | 4-Acid Digestion |
Ba, Barium (ppm) | 439 | 20 | 422 | 456 | 4-Acid Digestion |
Be, Beryllium (ppm) | 1.19 | 0.063 | 1.12 | 1.27 | 4-Acid Digestion |
Bi, Bismuth (ppm) | 1.62 | 0.098 | 1.50 | 1.74 | 4-Acid Digestion |
Ca, Calcium (wt.%) | 4.33 | 0.160 | 4.19 | 4.47 | 4-Acid Digestion |
Cd, Cadmium (ppm) | 0.10 | 0.01 | 0.08 | 0.12 | 4-Acid Digestion |
Ce, Cerium (ppm) | 47.7 | 3.43 | 44.7 | 50.8 | 4-Acid Digestion |
Co, Cobalt (ppm) | 203 | 8 | 197 | 210 | 4-Acid Digestion |
Cr, Chromium (ppm) | 52 | 7 | 47 | 57 | 4-Acid Digestion |
Cs, Caesium (ppm) | 4.11 | 0.200 | 3.92 | 4.30 | 4-Acid Digestion |
Cu, Copper (ppm) | 176 | 6 | 171 | 181 | 4-Acid Digestion |
Dy, Dysprosium (ppm) | 2.54 | 0.133 | 2.29 | 2.80 | 4-Acid Digestion |
Er, Erbium (ppm) | 1.23 | 0.087 | 1.09 | 1.36 | 4-Acid Digestion |
Eu, Europium (ppm) | 0.97 | 0.038 | 0.89 | 1.05 | 4-Acid Digestion |
Fe, Iron (wt.%) | 6.21 | 0.240 | 5.99 | 6.42 | 4-Acid Digestion |
Ga, Gallium (ppm) | 14.3 | 0.86 | 13.6 | 15.0 | 4-Acid Digestion |
Gd, Gadolinium (ppm) | 3.69 | 0.192 | 3.33 | 4.04 | 4-Acid Digestion |
Hf, Hafnium (ppm) | 1.96 | 0.158 | 1.77 | 2.15 | 4-Acid Digestion |
Ho, Holmium (ppm) | 0.45 | 0.05 | 0.38 | 0.52 | 4-Acid Digestion |
In, Indium (ppm) | 0.050 | 0.004 | 0.042 | 0.058 | 4-Acid Digestion |
K, Potassium (wt.%) | 1.27 | 0.047 | 1.22 | 1.32 | 4-Acid Digestion |
La, Lanthanum (ppm) | 23.2 | 1.76 | 21.8 | 24.6 | 4-Acid Digestion |
Li, Lithium (ppm) | 24.3 | 1.57 | 23.1 | 25.5 | 4-Acid Digestion |
Lu, Lutetium (ppm) | 0.17 | 0.016 | 0.15 | 0.19 | 4-Acid Digestion |
Mg, Magnesium (wt.%) | 1.89 | 0.055 | 1.82 | 1.95 | 4-Acid Digestion |
Mn, Manganese (wt.%) | 0.076 | 0.003 | 0.073 | 0.078 | 4-Acid Digestion |
Mo, Molybdenum (ppm) | 4.08 | 0.197 | 3.76 | 4.40 | 4-Acid Digestion |
Na, Sodium (wt.%) | 2.87 | 0.100 | 2.78 | 2.96 | 4-Acid Digestion |
Nb, Niobium (ppm) | 6.25 | 0.68 | 5.85 | 6.64 | 4-Acid Digestion |
Nd, Neodymium (ppm) | 21.8 | 0.78 | 20.0 | 23.5 | 4-Acid Digestion |
Ni, Nickel (ppm) | 55 | 2.6 | 53 | 58 | 4-Acid Digestion |
P, Phosphorus (wt.%) | 0.056 | 0.002 | 0.054 | 0.058 | 4-Acid Digestion |
Pb, Lead (ppm) | 13.7 | 0.75 | 12.9 | 14.6 | 4-Acid Digestion |
Pr, Praseodymium (ppm) | 5.60 | 0.332 | 5.09 | 6.11 | 4-Acid Digestion |
Rb, Rubidium (ppm) | 63 | 3.0 | 61 | 66 | 4-Acid Digestion |
S, Sulphur (wt.%) | 3.28 | 0.110 | 3.16 | 3.40 | 4-Acid Digestion |
Sb, Antimony (ppm) | 7.98 | 0.624 | 7.53 | 8.43 | 4-Acid Digestion |
Sc, Scandium (ppm) | 8.43 | 0.654 | 7.95 | 8.91 | 4-Acid Digestion |
Sm, Samarium (ppm) | 4.38 | 0.220 | 3.92 | 4.83 | 4-Acid Digestion |
Sn, Tin (ppm) | 1.98 | 0.178 | 1.81 | 2.15 | 4-Acid Digestion |
Sr, Strontium (ppm) | 191 | 7 | 185 | 198 | 4-Acid Digestion |
Ta, Tantalum (ppm) | 0.53 | 0.038 | 0.50 | 0.57 | 4-Acid Digestion |
Tb, Terbium (ppm) | 0.49 | 0.027 | 0.44 | 0.54 | 4-Acid Digestion |
Te, Tellurium (ppm) | 0.21 | 0.04 | 0.14 | 0.28 | 4-Acid Digestion |
Th, Thorium (ppm) | 7.01 | 0.466 | 6.56 | 7.47 | 4-Acid Digestion |
Ti, Titanium (wt.%) | 0.226 | 0.025 | 0.213 | 0.239 | 4-Acid Digestion |
Tl, Thallium (ppm) | 0.44 | 0.026 | 0.41 | 0.47 | 4-Acid Digestion |
Tm, Thulium (ppm) | 0.18 | 0.016 | 0.16 | 0.20 | 4-Acid Digestion |
U, Uranium (ppm) | 2.39 | 0.206 | 2.07 | 2.71 | 4-Acid Digestion |
V, Vanadium (ppm) | 64 | 4.4 | 60 | 67 | 4-Acid Digestion |
W, Tungsten (ppm) | 235 | 8 | 226 | 244 | 4-Acid Digestion |
Y, Yttrium (ppm) | 12.2 | 0.76 | 11.6 | 12.9 | 4-Acid Digestion |
Yb, Ytterbium (ppm) | 1.14 | 0.081 | 1.05 | 1.23 | 4-Acid Digestion |
Zn, Zinc (ppm) | 43.6 | 1.82 | 41.5 | 45.6 | 4-Acid Digestion |
Zr, Zirconium (ppm) | 67 | 7 | 62 | 71 | 4-Acid Digestion |
Ag, Silver (ppm) | 0.233 | 0.015 | 0.215 | 0.251 | Aqua Regia Digestion |
Al, Aluminium (wt.%) | 1.07 | 0.079 | 1.03 | 1.11 | Aqua Regia Digestion |
As, Arsenic (ppm) | 6918 | 314 | 6695 | 7141 | Aqua Regia Digestion |
B, Boron (ppm) | 10.9 | 1.6 | 9.6 | 12.2 | Aqua Regia Digestion |
Be, Beryllium (ppm) | 0.63 | 0.08 | 0.58 | 0.69 | Aqua Regia Digestion |
Bi, Bismuth (ppm) | 1.64 | 0.116 | 1.50 | 1.77 | Aqua Regia Digestion |
Ca, Calcium (wt.%) | 3.80 | 0.153 | 3.67 | 3.92 | Aqua Regia Digestion |
Cd, Cadmium (ppm) | 0.063 | 0.011 | 0.050 | 0.076 | Aqua Regia Digestion |
Ce, Cerium (ppm) | 19.9 | 3.7 | 17.4 | 22.5 | Aqua Regia Digestion |
Co, Cobalt (ppm) | 199 | 11 | 193 | 206 | Aqua Regia Digestion |
Cr, Chromium (ppm) | 39.2 | 2.09 | 37.6 | 40.9 | Aqua Regia Digestion |
Cs, Caesium (ppm) | 3.34 | 0.167 | 3.18 | 3.50 | Aqua Regia Digestion |
Cu, Copper (ppm) | 176 | 8 | 171 | 182 | Aqua Regia Digestion |
Dy, Dysprosium (ppm) | 1.56 | 0.112 | 1.39 | 1.72 | Aqua Regia Digestion |
Er, Erbium (ppm) | 0.67 | 0.055 | 0.58 | 0.77 | Aqua Regia Digestion |
Eu, Europium (ppm) | 0.38 | 0.09 | 0.25 | 0.50 | Aqua Regia Digestion |
Fe, Iron (wt.%) | 5.97 | 0.348 | 5.75 | 6.19 | Aqua Regia Digestion |
Ga, Gallium (ppm) | 4.41 | 0.219 | 4.13 | 4.69 | Aqua Regia Digestion |
Gd, Gadolinium (ppm) | 2.04 | 0.41 | 1.46 | 2.62 | Aqua Regia Digestion |
Ge, Germanium (ppm) | 0.083 | 0.016 | 0.060 | 0.106 | Aqua Regia Digestion |
Hf, Hafnium (ppm) | 0.29 | 0.021 | 0.27 | 0.31 | Aqua Regia Digestion |
Ho, Holmium (ppm) | 0.24 | 0.02 | 0.21 | 0.28 | Aqua Regia Digestion |
In, Indium (ppm) | 0.041 | 0.004 | 0.034 | 0.049 | Aqua Regia Digestion |
K, Potassium (wt.%) | 0.399 | 0.025 | 0.384 | 0.415 | Aqua Regia Digestion |
La, Lanthanum (ppm) | 8.53 | 1.75 | 7.40 | 9.65 | Aqua Regia Digestion |
Li, Lithium (ppm) | 20.1 | 1.66 | 19.0 | 21.2 | Aqua Regia Digestion |
Lu, Lutetium (ppm) | 0.076 | 0.006 | 0.068 | 0.085 | Aqua Regia Digestion |
Mg, Magnesium (wt.%) | 1.80 | 0.084 | 1.74 | 1.86 | Aqua Regia Digestion |
Mn, Manganese (wt.%) | 0.075 | 0.005 | 0.072 | 0.078 | Aqua Regia Digestion |
Mo, Molybdenum (ppm) | 3.94 | 0.320 | 3.68 | 4.21 | Aqua Regia Digestion |
Na, Sodium (wt.%) | 0.147 | 0.012 | 0.137 | 0.157 | Aqua Regia Digestion |
Nb, Niobium (ppm) | 0.75 | 0.22 | 0.61 | 0.88 | Aqua Regia Digestion |
Ni, Nickel (ppm) | 49.5 | 3.07 | 47.6 | 51.5 | Aqua Regia Digestion |
P, Phosphorus (wt.%) | 0.049 | 0.003 | 0.047 | 0.050 | Aqua Regia Digestion |
Pb, Lead (ppm) | 6.79 | 0.438 | 6.41 | 7.17 | Aqua Regia Digestion |
Rb, Rubidium (ppm) | 37.0 | 3.21 | 34.8 | 39.2 | Aqua Regia Digestion |
S, Sulphur (wt.%) | 3.24 | 0.132 | 3.14 | 3.35 | Aqua Regia Digestion |
Sb, Antimony (ppm) | 5.55 | 0.72 | 5.04 | 6.05 | Aqua Regia Digestion |
Sc, Scandium (ppm) | 6.00 | 0.425 | 5.66 | 6.35 | Aqua Regia Digestion |
Se, Selenium (ppm) | 1.29 | 0.18 | 1.05 | 1.52 | Aqua Regia Digestion |
Sn, Tin (ppm) | 1.35 | 0.086 | 1.26 | 1.45 | Aqua Regia Digestion |
Sr, Strontium (ppm) | 83 | 4.7 | 80 | 87 | Aqua Regia Digestion |
Ta, Tantalum (ppm) | < 0.010 | IND | IND | IND | Aqua Regia Digestion |
Tb, Terbium (ppm) | 0.29 | 0.04 | 0.25 | 0.33 | Aqua Regia Digestion |
Te, Tellurium (ppm) | 0.19 | 0.02 | 0.15 | 0.23 | Aqua Regia Digestion |
Th, Thorium (ppm) | 2.37 | 0.47 | 2.08 | 2.66 | Aqua Regia Digestion |
Ti, Titanium (wt.%) | 0.097 | 0.007 | 0.092 | 0.102 | Aqua Regia Digestion |
Tl, Thallium (ppm) | 0.33 | 0.019 | 0.31 | 0.35 | Aqua Regia Digestion |
U, Uranium (ppm) | 1.42 | 0.109 | 1.25 | 1.59 | Aqua Regia Digestion |
V, Vanadium (ppm) | 34.8 | 2.21 | 33.4 | 36.2 | Aqua Regia Digestion |
W, Tungsten (ppm) | 183 | 14 | 173 | 194 | Aqua Regia Digestion |
Y, Yttrium (ppm) | 6.61 | 0.533 | 6.22 | 6.99 | Aqua Regia Digestion |
Yb, Ytterbium (ppm) | 0.54 | 0.048 | 0.46 | 0.63 | Aqua Regia Digestion |
Zn, Zinc (ppm) | 40.1 | 2.59 | 38.4 | 41.8 | Aqua Regia Digestion |
Zr, Zirconium (ppm) | 9.09 | 0.91 | 8.49 | 9.68 | Aqua Regia Digestion |
S, Sulphur (wt.%) | 3.31 | 0.086 | 3.26 | 3.37 | Infrared Combustion |
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