Specifications
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CRM State:
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Matrix:
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Mineralisation:
OREAS 501d was prepared from a blend of porphyry copper-gold ores, barren granodiorite and a minor quantity of Cu-Mo concentrate. The ores were sourced from both the Ridgeway Mine and Northparkes Mine. Both mines are located in the Central West of New South Wales, Australia. The barren granodiorite was sourced from the mafic, S-Type, Late Devonian Bulla Granodiorite complex located in northern Melbourne, Australia. Twenty commercial analytical laboratories participated in the program to certify the elements reported in Table 1. The following methods were employed:
Analyte | Certified Value | 1SD | 95% Confidence Limits Low | 95% Confidence Limits High | Method |
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Cu, Copper (wt.%) | 0.272 | 0.009 | 0.268 | 0.276 | 4-Acid Digestion |
Au, Gold (ppm) | 0.232 | 0.011 | 0.228 | 0.235 | Pb Fire Assay |
Mo, Molybdenum (ppm) | 95 | 6.9 | 92 | 98 | 4-Acid Digestion |
Au, Gold (ppm) | 0.232 | 0.010 | 0.228 | 0.237 | Aqua Regia Digestion (sample weights 10-50g) |
S, Sulphur (wt.%) | 0.375 | 0.016 | 0.367 | 0.383 | Infrared Combustion |
Ag, Silver (ppm) | 0.664 | 0.053 | 0.635 | 0.693 | 4-Acid Digestion |
Al, Aluminium (wt.%) | 7.69 | 0.247 | 7.58 | 7.81 | 4-Acid Digestion |
As, Arsenic (ppm) | 15.1 | 2.0 | 13.8 | 16.4 | 4-Acid Digestion |
Ba, Barium (ppm) | 1032 | 36 | 1015 | 1049 | 4-Acid Digestion |
Be, Beryllium (ppm) | 2.65 | 0.29 | 2.52 | 2.79 | 4-Acid Digestion |
Bi, Bismuth (ppm) | 1.26 | 0.14 | 1.19 | 1.32 | 4-Acid Digestion |
Ca, Calcium (wt.%) | 1.85 | 0.050 | 1.83 | 1.88 | 4-Acid Digestion |
Cd, Cadmium (ppm) | 0.30 | 0.03 | 0.28 | 0.31 | 4-Acid Digestion |
Ce, Cerium (ppm) | 73 | 5.6 | 70 | 76 | 4-Acid Digestion |
Co, Cobalt (ppm) | 9.57 | 0.636 | 9.23 | 9.91 | 4-Acid Digestion |
Cr, Chromium (ppm) | 45.4 | 5.5 | 42.8 | 48.0 | 4-Acid Digestion |
Cs, Caesium (ppm) | 10.7 | 0.93 | 10.2 | 11.2 | 4-Acid Digestion |
Dy, Dysprosium (ppm) | 3.76 | 0.315 | 3.53 | 3.99 | 4-Acid Digestion |
Er, Erbium (ppm) | 1.49 | 0.19 | 1.34 | 1.64 | 4-Acid Digestion |
Eu, Europium (ppm) | 1.44 | 0.101 | 1.33 | 1.55 | 4-Acid Digestion |
Fe, Iron (wt.%) | 3.37 | 0.123 | 3.31 | 3.43 | 4-Acid Digestion |
Ga, Gallium (ppm) | 20.8 | 1.09 | 20.2 | 21.3 | 4-Acid Digestion |
Gd, Gadolinium (ppm) | 5.89 | 0.444 | 5.56 | 6.23 | 4-Acid Digestion |
Hf, Hafnium (ppm) | 2.00 | 0.31 | 1.86 | 2.15 | 4-Acid Digestion |
Ho, Holmium (ppm) | 0.62 | 0.059 | 0.56 | 0.68 | 4-Acid Digestion |
In, Indium (ppm) | 0.086 | 0.007 | 0.082 | 0.089 | 4-Acid Digestion |
K, Potassium (wt.%) | 3.01 | 0.103 | 2.96 | 3.06 | 4-Acid Digestion |
La, Lanthanum (ppm) | 34.8 | 2.83 | 33.3 | 36.2 | 4-Acid Digestion |
Li, Lithium (ppm) | 51 | 2.8 | 50 | 53 | 4-Acid Digestion |
Lu, Lutetium (ppm) | 0.19 | 0.018 | 0.17 | 0.20 | 4-Acid Digestion |
Mg, Magnesium (wt.%) | 0.827 | 0.028 | 0.815 | 0.839 | 4-Acid Digestion |
Mn, Manganese (wt.%) | 0.037 | 0.001 | 0.037 | 0.038 | 4-Acid Digestion |
Na, Sodium (wt.%) | 2.07 | 0.056 | 2.05 | 2.10 | 4-Acid Digestion |
Nb, Niobium (ppm) | 12.2 | 0.52 | 11.9 | 12.4 | 4-Acid Digestion |
Nd, Neodymium (ppm) | 32.6 | 2.87 | 30.5 | 34.6 | 4-Acid Digestion |
Ni, Nickel (wt.%) | 0.002 | 0.000 | 0.002 | 0.002 | 4-Acid Digestion |
P, Phosphorus (wt.%) | 0.087 | 0.004 | 0.084 | 0.089 | 4-Acid Digestion |
Pb, Lead (ppm) | 25.2 | 0.75 | 24.9 | 25.5 | 4-Acid Digestion |
Pr, Praseodymium (ppm) | 8.37 | 0.804 | 7.79 | 8.95 | 4-Acid Digestion |
Rb, Rubidium (ppm) | 164 | 5 | 161 | 166 | 4-Acid Digestion |
Re, Rhenium (ppm) | 0.049 | 0.003 | 0.048 | 0.050 | 4-Acid Digestion |
S, Sulphur (wt.%) | 0.380 | 0.022 | 0.370 | 0.391 | 4-Acid Digestion |
Sb, Antimony (ppm) | 2.25 | 0.193 | 2.15 | 2.34 | 4-Acid Digestion |
Sc, Scandium (ppm) | 9.47 | 0.598 | 9.15 | 9.79 | 4-Acid Digestion |
Sm, Samarium (ppm) | 6.79 | 0.517 | 6.42 | 7.15 | 4-Acid Digestion |
Sn, Tin (ppm) | 4.86 | 0.282 | 4.73 | 4.99 | 4-Acid Digestion |
Sr, Strontium (ppm) | 212 | 7 | 209 | 215 | 4-Acid Digestion |
Ta, Tantalum (ppm) | 1.09 | 0.058 | 1.05 | 1.12 | 4-Acid Digestion |
Tb, Terbium (ppm) | 0.76 | 0.08 | 0.69 | 0.84 | 4-Acid Digestion |
Th, Thorium (ppm) | 14.0 | 1.13 | 13.4 | 14.6 | 4-Acid Digestion |
Ti, Titanium (wt.%) | 0.359 | 0.012 | 0.354 | 0.365 | 4-Acid Digestion |
Tl, Thallium (ppm) | 0.91 | 0.040 | 0.89 | 0.93 | 4-Acid Digestion |
Tm, Thulium (ppm) | 0.19 | 0.02 | 0.17 | 0.22 | 4-Acid Digestion |
U, Uranium (ppm) | 3.88 | 0.48 | 3.68 | 4.08 | 4-Acid Digestion |
V, Vanadium (ppm) | 71 | 1.3 | 71 | 72 | 4-Acid Digestion |
W, Tungsten (ppm) | 8.56 | 0.773 | 8.25 | 8.87 | 4-Acid Digestion |
Y, Yttrium (ppm) | 15.7 | 1.38 | 15.0 | 16.5 | 4-Acid Digestion |
Yb, Ytterbium (ppm) | 1.22 | 0.120 | 1.12 | 1.32 | 4-Acid Digestion |
Zn, Zinc (ppm) | 90 | 3.3 | 89 | 92 | 4-Acid Digestion |
Zr, Zirconium (ppm) | 62 | 9 | 58 | 66 | 4-Acid Digestion |
Ag, Silver (ppm) | 0.649 | 0.045 | 0.626 | 0.673 | Aqua Regia Digestion |
Al, Aluminium (wt.%) | 1.96 | 0.145 | 1.89 | 2.03 | Aqua Regia Digestion |
As, Arsenic (ppm) | 14.1 | 0.92 | 13.5 | 14.8 | Aqua Regia Digestion |
B, Boron (ppm) | < 10.0 | IND | IND | IND | Aqua Regia Digestion |
Ba, Barium (ppm) | 468 | 41 | 445 | 491 | Aqua Regia Digestion |
Be, Beryllium (ppm) | 1.46 | 0.17 | 1.38 | 1.54 | Aqua Regia Digestion |
Bi, Bismuth (ppm) | 1.30 | 0.113 | 1.25 | 1.35 | Aqua Regia Digestion |
Ca, Calcium (wt.%) | 0.580 | 0.050 | 0.556 | 0.604 | Aqua Regia Digestion |
Cd, Cadmium (ppm) | 0.18 | 0.02 | 0.17 | 0.19 | Aqua Regia Digestion |
Ce, Cerium (ppm) | 29.1 | 5.4 | 25.8 | 32.5 | Aqua Regia Digestion |
Co, Cobalt (ppm) | 9.28 | 0.551 | 9.00 | 9.57 | Aqua Regia Digestion |
Cr, Chromium (ppm) | 48.5 | 1.57 | 47.8 | 49.2 | Aqua Regia Digestion |
Cs, Caesium (ppm) | 8.35 | 0.740 | 7.96 | 8.74 | Aqua Regia Digestion |
Cu, Copper (wt.%) | 0.270 | 0.006 | 0.268 | 0.272 | Aqua Regia Digestion |
Dy, Dysprosium (ppm) | 2.31 | 0.179 | 2.11 | 2.51 | Aqua Regia Digestion |
Er, Erbium (ppm) | 0.89 | 0.059 | 0.81 | 0.96 | Aqua Regia Digestion |
Eu, Europium (ppm) | 0.32 | 0.05 | 0.27 | 0.37 | Aqua Regia Digestion |
Fe, Iron (wt.%) | 3.24 | 0.150 | 3.17 | 3.31 | Aqua Regia Digestion |
Ga, Gallium (ppm) | 9.21 | 0.523 | 8.92 | 9.50 | Aqua Regia Digestion |
Gd, Gadolinium (ppm) | 3.02 | 0.33 | 2.64 | 3.40 | Aqua Regia Digestion |
Hf, Hafnium (ppm) | 0.29 | 0.016 | 0.29 | 0.30 | Aqua Regia Digestion |
Ho, Holmium (ppm) | 0.39 | 0.05 | 0.33 | 0.45 | Aqua Regia Digestion |
In, Indium (ppm) | 0.074 | 0.007 | 0.071 | 0.077 | Aqua Regia Digestion |
K, Potassium (wt.%) | 0.938 | 0.065 | 0.907 | 0.969 | Aqua Regia Digestion |
La, Lanthanum (ppm) | 13.6 | 2.5 | 12.1 | 15.0 | Aqua Regia Digestion |
Li, Lithium (ppm) | 40.8 | 4.1 | 38.7 | 42.8 | Aqua Regia Digestion |
Mg, Magnesium (wt.%) | 0.761 | 0.024 | 0.750 | 0.771 | Aqua Regia Digestion |
Mn, Manganese (wt.%) | 0.031 | 0.001 | 0.031 | 0.032 | Aqua Regia Digestion |
Mo, Molybdenum (ppm) | 93 | 5.2 | 91 | 96 | Aqua Regia Digestion |
Na, Sodium (wt.%) | 0.146 | 0.017 | 0.138 | 0.154 | Aqua Regia Digestion |
Nb, Niobium (ppm) | 0.75 | 0.25 | 0.57 | 0.94 | Aqua Regia Digestion |
Ni, Nickel (wt.%) | 0.002 | 0.000 | 0.002 | 0.002 | Aqua Regia Digestion |
P, Phosphorus (wt.%) | 0.066 | 0.003 | 0.065 | 0.068 | Aqua Regia Digestion |
Pb, Lead (ppm) | 7.08 | 0.609 | 6.75 | 7.41 | Aqua Regia Digestion |
Pr, Praseodymium (ppm) | 3.30 | 0.72 | 2.48 | 4.11 | Aqua Regia Digestion |
Pt, Platinum (ppb) | < 5.00 | IND | IND | IND | Aqua Regia Digestion |
Rb, Rubidium (ppm) | 94 | 7.9 | 90 | 99 | Aqua Regia Digestion |
Re, Rhenium (ppm) | 0.047 | 0.003 | 0.046 | 0.049 | Aqua Regia Digestion |
S, Sulphur (wt.%) | 0.383 | 0.026 | 0.370 | 0.397 | Aqua Regia Digestion |
Sb, Antimony (ppm) | 1.58 | 0.26 | 1.44 | 1.71 | Aqua Regia Digestion |
Sc, Scandium (ppm) | 8.00 | 0.528 | 7.72 | 8.27 | Aqua Regia Digestion |
Sm, Samarium (ppm) | 3.13 | 0.59 | 2.47 | 3.79 | Aqua Regia Digestion |
Sn, Tin (ppm) | 3.47 | 0.228 | 3.33 | 3.60 | Aqua Regia Digestion |
Sr, Strontium (ppm) | 40.8 | 2.72 | 39.4 | 42.2 | Aqua Regia Digestion |
Tb, Terbium (ppm) | 0.45 | 0.06 | 0.40 | 0.51 | Aqua Regia Digestion |
Te, Tellurium (ppm) | 0.20 | 0.03 | 0.19 | 0.21 | Aqua Regia Digestion |
Ti, Titanium (wt.%) | 0.265 | 0.013 | 0.258 | 0.271 | Aqua Regia Digestion |
Tl, Thallium (ppm) | 0.60 | 0.036 | 0.58 | 0.62 | Aqua Regia Digestion |
Tm, Thulium (ppm) | 0.13 | 0.02 | 0.10 | 0.16 | Aqua Regia Digestion |
U, Uranium (ppm) | 3.32 | 0.249 | 3.22 | 3.42 | Aqua Regia Digestion |
V, Vanadium (ppm) | 65 | 3.6 | 63 | 67 | Aqua Regia Digestion |
W, Tungsten (ppm) | 5.36 | 0.450 | 5.10 | 5.62 | Aqua Regia Digestion |
Y, Yttrium (ppm) | 10.2 | 0.72 | 9.9 | 10.6 | Aqua Regia Digestion |
Yb, Ytterbium (ppm) | 0.75 | 0.047 | 0.70 | 0.80 | Aqua Regia Digestion |
Zn, Zinc (ppm) | 86 | 2.6 | 84 | 87 | Aqua Regia Digestion |
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