Specifications
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CRM State:
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Matrix:
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Mineralisation:
OREAS 230 was prepared from a blend of gold-bearing ore and barren
greenstone. The ore was sourced from the Frogs Leg Gold Mine located 19km west
of Kalgoorlie in Western Australia. The Cambrian greenstone was sourced from a
quarry 145km north of Melbourne, Australia.
Thirty-one commercial analytical
laboratories participated in the program to certify the elements shown below.
The following methods were employed:
Analyte | Certified Value | 1SD | 95% Confidence Limits Low | 95% Confidence Limits High | Method |
---|---|---|---|---|---|
Au, Gold (ppm) | 0.337 | 0.013 | 0.332 | 0.341 | Pb Fire Assay |
Au, Gold (ppm) | 0.318 | 0.015 | 0.311 | 0.324 | Aqua Regia Digestion (sample weights 10-50g) |
Au, Gold (ppm) | 0.321 | 0.022 | 0.312 | 0.331 | Cyanide Leach |
Au, Gold (ppm) | 0.323 | 0.024 | 0.306 | 0.339 | PhotonAssay |
Ag, Silver (ppm) | 0.130 | 0.014 | 0.124 | 0.137 | Aqua Regia Digestion |
Al, Aluminium (wt.%) | 3.49 | 0.171 | 3.41 | 3.57 | Aqua Regia Digestion |
As, Arsenic (ppm) | 17.1 | 1.14 | 16.6 | 17.5 | Aqua Regia Digestion |
B, Boron (ppm) | 19.1 | 2.4 | 16.8 | 21.4 | Aqua Regia Digestion |
Ba, Barium (ppm) | 16.7 | 1.59 | 15.8 | 17.5 | Aqua Regia Digestion |
Be, Beryllium (ppm) | 0.19 | 0.018 | 0.18 | 0.21 | Aqua Regia Digestion |
Ca, Calcium (wt.%) | 2.68 | 0.419 | 2.48 | 2.87 | Aqua Regia Digestion |
Cd, Cadmium (ppm) | 0.22 | 0.017 | 0.22 | 0.23 | Aqua Regia Digestion |
Ce, Cerium (ppm) | 7.09 | 0.426 | 6.88 | 7.30 | Aqua Regia Digestion |
Co, Cobalt (ppm) | 30.6 | 1.63 | 29.8 | 31.3 | Aqua Regia Digestion |
Cr, Chromium (ppm) | 12.4 | 1.3 | 11.8 | 13.0 | Aqua Regia Digestion |
Cs, Caesium (ppm) | 0.27 | 0.016 | 0.27 | 0.28 | Aqua Regia Digestion |
Cu, Copper (ppm) | 169 | 8 | 166 | 172 | Aqua Regia Digestion |
Dy, Dysprosium (ppm) | 2.10 | 0.31 | 1.83 | 2.37 | Aqua Regia Digestion |
Er, Erbium (ppm) | 1.20 | 0.14 | 1.07 | 1.33 | Aqua Regia Digestion |
Eu, Europium (ppm) | 0.34 | 0.024 | 0.31 | 0.37 | Aqua Regia Digestion |
Fe, Iron (wt.%) | 5.58 | 0.180 | 5.50 | 5.66 | Aqua Regia Digestion |
Ga, Gallium (ppm) | 10.1 | 1.1 | 9.6 | 10.6 | Aqua Regia Digestion |
Gd, Gadolinium (ppm) | 1.87 | 0.25 | 1.66 | 2.08 | Aqua Regia Digestion |
Ge, Germanium (ppm) | 0.13 | 0.02 | 0.11 | 0.15 | Aqua Regia Digestion |
Hf, Hafnium (ppm) | 0.48 | 0.08 | 0.44 | 0.53 | Aqua Regia Digestion |
Ho, Holmium (ppm) | 0.41 | 0.04 | 0.36 | 0.45 | Aqua Regia Digestion |
In, Indium (ppm) | 0.025 | 0.004 | 0.023 | 0.027 | Aqua Regia Digestion |
K, Potassium (wt.%) | 0.081 | 0.009 | 0.077 | 0.085 | Aqua Regia Digestion |
La, Lanthanum (ppm) | 2.79 | 0.142 | 2.73 | 2.86 | Aqua Regia Digestion |
Li, Lithium (ppm) | 9.45 | 0.672 | 9.07 | 9.82 | Aqua Regia Digestion |
Lu, Lutetium (ppm) | 0.16 | 0.02 | 0.14 | 0.17 | Aqua Regia Digestion |
Mg, Magnesium (wt.%) | 1.69 | 0.046 | 1.67 | 1.71 | Aqua Regia Digestion |
Mn, Manganese (wt.%) | 0.074 | 0.004 | 0.072 | 0.075 | Aqua Regia Digestion |
Mo, Molybdenum (ppm) | 0.64 | 0.042 | 0.62 | 0.67 | Aqua Regia Digestion |
Na, Sodium (wt.%) | 0.102 | 0.009 | 0.098 | 0.107 | Aqua Regia Digestion |
Nd, Neodymium (ppm) | 4.95 | 0.54 | 4.50 | 5.39 | Aqua Regia Digestion |
Ni, Nickel (ppm) | 54 | 2.2 | 53 | 55 | Aqua Regia Digestion |
P, Phosphorus (wt.%) | 0.038 | 0.002 | 0.037 | 0.039 | Aqua Regia Digestion |
Pb, Lead (ppm) | 8.24 | 0.424 | 8.00 | 8.48 | Aqua Regia Digestion |
Pr, Praseodymium (ppm) | 1.04 | 0.11 | 0.95 | 1.12 | Aqua Regia Digestion |
Pt, Platinum (ppb) | 15.4 | 1.4 | 13.9 | 17.0 | Aqua Regia Digestion |
Rb, Rubidium (ppm) | 2.69 | 0.31 | 2.54 | 2.84 | Aqua Regia Digestion |
Re, Rhenium (ppm) | 0.002 | 0.001 | 0.001 | 0.002 | Aqua Regia Digestion |
S, Sulphur (wt.%) | 0.187 | 0.012 | 0.181 | 0.192 | Aqua Regia Digestion |
Sb, Antimony (ppm) | 0.32 | 0.08 | 0.28 | 0.36 | Aqua Regia Digestion |
Sc, Scandium (ppm) | 5.56 | 0.57 | 5.25 | 5.87 | Aqua Regia Digestion |
Sm, Samarium (ppm) | 1.38 | 0.066 | 1.30 | 1.46 | Aqua Regia Digestion |
Sn, Tin (ppm) | 0.47 | 0.11 | 0.41 | 0.54 | Aqua Regia Digestion |
Sr, Strontium (ppm) | 36.8 | 5.6 | 34.2 | 39.4 | Aqua Regia Digestion |
Ta, Tantalum (ppm) | < 0.010 | IND | IND | IND | Aqua Regia Digestion |
Tb, Terbium (ppm) | 0.31 | 0.03 | 0.29 | 0.34 | Aqua Regia Digestion |
Te, Tellurium (ppm) | 0.049 | 0.009 | 0.047 | 0.052 | Aqua Regia Digestion |
Th, Thorium (ppm) | 0.34 | 0.04 | 0.32 | 0.36 | Aqua Regia Digestion |
Ti, Titanium (wt.%) | 0.333 | 0.064 | 0.303 | 0.362 | Aqua Regia Digestion |
Tm, Thulium (ppm) | 0.17 | 0.014 | 0.15 | 0.18 | Aqua Regia Digestion |
U, Uranium (ppm) | 0.093 | 0.006 | 0.090 | 0.096 | Aqua Regia Digestion |
V, Vanadium (ppm) | 139 | 15 | 131 | 147 | Aqua Regia Digestion |
W, Tungsten (ppm) | 5.44 | 0.86 | 5.02 | 5.86 | Aqua Regia Digestion |
Y, Yttrium (ppm) | 11.6 | 1.03 | 11.0 | 12.1 | Aqua Regia Digestion |
Yb, Ytterbium (ppm) | 1.12 | 0.13 | 1.01 | 1.22 | Aqua Regia Digestion |
Zn, Zinc (ppm) | 85 | 5.3 | 82 | 87 | Aqua Regia Digestion |
Zr, Zirconium (ppm) | 16.0 | 1.37 | 15.3 | 16.7 | Aqua Regia Digestion |
Ag, Silver (ppm) | 0.128 | 0.014 | 0.121 | 0.134 | 4-Acid Digestion |
Al, Aluminium (wt.%) | 7.35 | 0.206 | 7.27 | 7.43 | 4-Acid Digestion |
As, Arsenic (ppm) | 17.3 | 1.53 | 16.7 | 18.0 | 4-Acid Digestion |
Ba, Barium (ppm) | 79 | 3.6 | 78 | 81 | 4-Acid Digestion |
Be, Beryllium (ppm) | 0.34 | 0.029 | 0.33 | 0.36 | 4-Acid Digestion |
Ca, Calcium (wt.%) | 7.74 | 0.401 | 7.58 | 7.90 | 4-Acid Digestion |
Cd, Cadmium (ppm) | 0.26 | 0.03 | 0.25 | 0.27 | 4-Acid Digestion |
Ce, Cerium (ppm) | 10.2 | 0.63 | 10.0 | 10.5 | 4-Acid Digestion |
Co, Cobalt (ppm) | 44.7 | 2.47 | 43.6 | 45.9 | 4-Acid Digestion |
Cr, Chromium (ppm) | 106 | 12 | 101 | 111 | 4-Acid Digestion |
Cs, Caesium (ppm) | 0.38 | 0.019 | 0.37 | 0.39 | 4-Acid Digestion |
Cu, Copper (ppm) | 172 | 5 | 170 | 174 | 4-Acid Digestion |
Dy, Dysprosium (ppm) | 3.79 | 0.163 | 3.70 | 3.88 | 4-Acid Digestion |
Er, Erbium (ppm) | 2.32 | 0.113 | 2.26 | 2.38 | 4-Acid Digestion |
Eu, Europium (ppm) | 0.92 | 0.043 | 0.88 | 0.96 | 4-Acid Digestion |
Fe, Iron (wt.%) | 8.04 | 0.287 | 7.93 | 8.15 | 4-Acid Digestion |
Ga, Gallium (ppm) | 15.7 | 0.98 | 15.3 | 16.1 | 4-Acid Digestion |
Gd, Gadolinium (ppm) | 3.35 | 0.261 | 3.19 | 3.50 | 4-Acid Digestion |
Hf, Hafnium (ppm) | 1.58 | 0.094 | 1.55 | 1.61 | 4-Acid Digestion |
Ho, Holmium (ppm) | 0.80 | 0.037 | 0.77 | 0.82 | 4-Acid Digestion |
In, Indium (ppm) | 0.070 | 0.006 | 0.068 | 0.072 | 4-Acid Digestion |
K, Potassium (wt.%) | 0.265 | 0.016 | 0.258 | 0.271 | 4-Acid Digestion |
La, Lanthanum (ppm) | 4.08 | 0.352 | 3.93 | 4.24 | 4-Acid Digestion |
Li, Lithium (ppm) | 10.5 | 0.85 | 10.1 | 10.9 | 4-Acid Digestion |
Lu, Lutetium (ppm) | 0.33 | 0.016 | 0.32 | 0.34 | 4-Acid Digestion |
Mg, Magnesium (wt.%) | 3.99 | 0.166 | 3.92 | 4.05 | 4-Acid Digestion |
Mn, Manganese (wt.%) | 0.137 | 0.004 | 0.135 | 0.138 | 4-Acid Digestion |
Mo, Molybdenum (ppm) | 0.72 | 0.07 | 0.68 | 0.76 | 4-Acid Digestion |
Na, Sodium (wt.%) | 1.68 | 0.075 | 1.65 | 1.71 | 4-Acid Digestion |
Nb, Niobium (ppm) | 3.39 | 0.253 | 3.27 | 3.51 | 4-Acid Digestion |
Nd, Neodymium (ppm) | 7.56 | 0.343 | 7.37 | 7.74 | 4-Acid Digestion |
Ni, Nickel (ppm) | 86 | 5.8 | 83 | 88 | 4-Acid Digestion |
P, Phosphorus (wt.%) | 0.040 | 0.002 | 0.039 | 0.041 | 4-Acid Digestion |
Pb, Lead (ppm) | 8.54 | 0.656 | 8.19 | 8.88 | 4-Acid Digestion |
Pr, Praseodymium (ppm) | 1.50 | 0.093 | 1.44 | 1.55 | 4-Acid Digestion |
Rb, Rubidium (ppm) | 6.37 | 0.455 | 6.20 | 6.55 | 4-Acid Digestion |
S, Sulphur (wt.%) | 0.188 | 0.016 | 0.181 | 0.195 | 4-Acid Digestion |
Sb, Antimony (ppm) | 0.56 | 0.050 | 0.53 | 0.59 | 4-Acid Digestion |
Sc, Scandium (ppm) | 43.7 | 2.36 | 42.6 | 44.7 | 4-Acid Digestion |
Sm, Samarium (ppm) | 2.39 | 0.137 | 2.32 | 2.46 | 4-Acid Digestion |
Sn, Tin (ppm) | 0.77 | 0.11 | 0.72 | 0.82 | 4-Acid Digestion |
Sr, Strontium (ppm) | 231 | 10 | 227 | 235 | 4-Acid Digestion |
Ta, Tantalum (ppm) | 0.23 | 0.03 | 0.21 | 0.25 | 4-Acid Digestion |
Tb, Terbium (ppm) | 0.57 | 0.033 | 0.55 | 0.59 | 4-Acid Digestion |
Te, Tellurium (ppm) | 0.074 | 0.021 | 0.058 | 0.089 | 4-Acid Digestion |
Th, Thorium (ppm) | 0.50 | 0.038 | 0.48 | 0.51 | 4-Acid Digestion |
Ti, Titanium (wt.%) | 0.639 | 0.026 | 0.628 | 0.650 | 4-Acid Digestion |
Tl, Thallium (ppm) | 0.080 | 0.008 | 0.076 | 0.083 | 4-Acid Digestion |
Tm, Thulium (ppm) | 0.34 | 0.012 | 0.33 | 0.34 | 4-Acid Digestion |
U, Uranium (ppm) | 0.15 | 0.02 | 0.14 | 0.16 | 4-Acid Digestion |
V, Vanadium (ppm) | 292 | 11 | 288 | 297 | 4-Acid Digestion |
W, Tungsten (ppm) | 8.14 | 0.633 | 7.85 | 8.43 | 4-Acid Digestion |
Y, Yttrium (ppm) | 20.6 | 1.02 | 20.2 | 21.0 | 4-Acid Digestion |
Yb, Ytterbium (ppm) | 2.26 | 0.133 | 2.19 | 2.33 | 4-Acid Digestion |
Zn, Zinc (ppm) | 98 | 5.1 | 96 | 100 | 4-Acid Digestion |
Zr, Zirconium (ppm) | 50 | 3.0 | 49 | 51 | 4-Acid Digestion |
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