Specifications
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CRM State:
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Matrix:
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Mineralisation:
OREAS 504c was prepared from a blend of porphyry copper-gold ore, barren granodiorite and a minor quantity of Cu-Mo concentrate. The ore was sourced from the Ridgeway underground mine located in the Cadia Valley Operations (CVO) situated in central western New South Wales, Australia. The barren I-type hornblende-bearing granodiorite was sourced from the Late Devonian Lysterfield granodiorite complex located in eastern Melbourne, Australia.
Twenty seven 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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Au, Gold (ppm) | 1.48 | 0.045 | 1.47 | 1.50 | Pb Fire Assay |
Cu, Copper (wt.%) | 1.11 | 0.030 | 1.10 | 1.12 | 4-Acid Digestion |
Mo, Molybdenum (ppm) | 512 | 13 | 507 | 518 | 4-Acid Digestion |
Au, Gold (ppm) | 1.46 | 0.058 | 1.43 | 1.50 | Aqua Regia Digestion (sample weights 10-50g) |
Ag, Silver (ppm) | 4.22 | 0.288 | 4.10 | 4.34 | 4-Acid Digestion |
Al, Aluminium (wt.%) | 7.07 | 0.220 | 6.99 | 7.15 | 4-Acid Digestion |
As, Arsenic (ppm) | 34.9 | 2.92 | 33.9 | 35.9 | 4-Acid Digestion |
Ba, Barium (ppm) | 850 | 25 | 840 | 860 | 4-Acid Digestion |
Be, Beryllium (ppm) | 2.31 | 0.196 | 2.22 | 2.40 | 4-Acid Digestion |
Bi, Bismuth (ppm) | 2.26 | 0.106 | 2.20 | 2.31 | 4-Acid Digestion |
Ca, Calcium (wt.%) | 2.52 | 0.112 | 2.47 | 2.56 | 4-Acid Digestion |
Ce, Cerium (ppm) | 49.8 | 4.55 | 47.7 | 51.9 | 4-Acid Digestion |
Co, Cobalt (ppm) | 16.2 | 0.94 | 15.7 | 16.6 | 4-Acid Digestion |
Cr, Chromium (ppm) | 58 | 5.1 | 56 | 60 | 4-Acid Digestion |
Cs, Caesium (ppm) | 8.16 | 0.351 | 7.99 | 8.34 | 4-Acid Digestion |
Dy, Dysprosium (ppm) | 3.76 | 0.146 | 3.68 | 3.84 | 4-Acid Digestion |
Er, Erbium (ppm) | 2.11 | 0.144 | 1.99 | 2.23 | 4-Acid Digestion |
Eu, Europium (ppm) | 1.03 | 0.13 | 0.91 | 1.15 | 4-Acid Digestion |
Fe, Iron (wt.%) | 6.08 | 0.191 | 6.01 | 6.16 | 4-Acid Digestion |
Ga, Gallium (ppm) | 17.2 | 0.88 | 16.8 | 17.6 | 4-Acid Digestion |
Gd, Gadolinium (ppm) | 4.14 | 0.200 | 3.99 | 4.30 | 4-Acid Digestion |
Hf, Hafnium (ppm) | 2.21 | 0.156 | 2.14 | 2.27 | 4-Acid Digestion |
Ho, Holmium (ppm) | 0.75 | 0.050 | 0.71 | 0.79 | 4-Acid Digestion |
In, Indium (ppm) | 0.24 | 0.016 | 0.24 | 0.25 | 4-Acid Digestion |
K, Potassium (wt.%) | 3.16 | 0.106 | 3.12 | 3.20 | 4-Acid Digestion |
La, Lanthanum (ppm) | 25.5 | 1.39 | 24.9 | 26.1 | 4-Acid Digestion |
Li, Lithium (ppm) | 25.9 | 1.42 | 25.3 | 26.6 | 4-Acid Digestion |
Lu, Lutetium (ppm) | 0.30 | 0.016 | 0.28 | 0.31 | 4-Acid Digestion |
Mg, Magnesium (wt.%) | 1.43 | 0.054 | 1.41 | 1.45 | 4-Acid Digestion |
Mn, Manganese (wt.%) | 0.051 | 0.002 | 0.050 | 0.051 | 4-Acid Digestion |
Na, Sodium (wt.%) | 2.04 | 0.053 | 2.02 | 2.06 | 4-Acid Digestion |
Nb, Niobium (ppm) | 14.2 | 0.60 | 13.9 | 14.5 | 4-Acid Digestion |
Nd, Neodymium (ppm) | 22.4 | 1.19 | 21.7 | 23.0 | 4-Acid Digestion |
Ni, Nickel (ppm) | 43.2 | 2.40 | 42.3 | 44.2 | 4-Acid Digestion |
P, Phosphorus (wt.%) | 0.094 | 0.003 | 0.093 | 0.096 | 4-Acid Digestion |
Pb, Lead (ppm) | 60 | 3.1 | 59 | 61 | 4-Acid Digestion |
Pr, Praseodymium (ppm) | 5.96 | 0.487 | 5.55 | 6.37 | 4-Acid Digestion |
Rb, Rubidium (ppm) | 142 | 5 | 140 | 144 | 4-Acid Digestion |
Re, Rhenium (ppb) | 353 | 25 | 340 | 366 | 4-Acid Digestion |
S, Sulphur (wt.%) | 1.11 | 0.036 | 1.10 | 1.13 | 4-Acid Digestion |
Sb, Antimony (ppm) | 1.62 | 0.088 | 1.57 | 1.66 | 4-Acid Digestion |
Sc, Scandium (ppm) | 12.6 | 0.67 | 12.3 | 12.9 | 4-Acid Digestion |
Se, Selenium (ppm) | 7.39 | 0.99 | 7.12 | 7.67 | 4-Acid Digestion |
Sm, Samarium (ppm) | 4.50 | 0.259 | 4.33 | 4.67 | 4-Acid Digestion |
Sn, Tin (ppm) | 5.42 | 0.215 | 5.33 | 5.52 | 4-Acid Digestion |
Sr, Strontium (ppm) | 360 | 16 | 353 | 366 | 4-Acid Digestion |
Ta, Tantalum (ppm) | 1.06 | 0.066 | 1.02 | 1.11 | 4-Acid Digestion |
Tb, Terbium (ppm) | 0.64 | 0.013 | 0.63 | 0.65 | 4-Acid Digestion |
Te, Tellurium (ppm) | 0.47 | 0.05 | 0.44 | 0.50 | 4-Acid Digestion |
Th, Thorium (ppm) | 12.6 | 0.67 | 12.3 | 12.9 | 4-Acid Digestion |
Ti, Titanium (wt.%) | 0.403 | 0.015 | 0.397 | 0.409 | 4-Acid Digestion |
Tl, Thallium (ppm) | 0.70 | 0.028 | 0.69 | 0.71 | 4-Acid Digestion |
Tm, Thulium (ppm) | 0.31 | 0.020 | 0.29 | 0.33 | 4-Acid Digestion |
U, Uranium (ppm) | 3.64 | 0.173 | 3.58 | 3.69 | 4-Acid Digestion |
V, Vanadium (ppm) | 122 | 6 | 120 | 125 | 4-Acid Digestion |
W, Tungsten (ppm) | 2.95 | 0.219 | 2.88 | 3.02 | 4-Acid Digestion |
Y, Yttrium (ppm) | 20.3 | 0.77 | 20.0 | 20.6 | 4-Acid Digestion |
Yb, Ytterbium (ppm) | 2.00 | 0.170 | 1.89 | 2.12 | 4-Acid Digestion |
Zn, Zinc (ppm) | 106 | 4 | 104 | 108 | 4-Acid Digestion |
Zr, Zirconium (ppm) | 72 | 5.5 | 69 | 74 | 4-Acid Digestion |
Ag, Silver (ppm) | 4.19 | 0.306 | 4.06 | 4.32 | Aqua Regia Digestion |
Al, Aluminium (wt.%) | 1.86 | 0.053 | 1.84 | 1.89 | Aqua Regia Digestion |
As, Arsenic (ppm) | 34.5 | 2.57 | 33.6 | 35.4 | Aqua Regia Digestion |
Ba, Barium (ppm) | 271 | 21 | 261 | 280 | Aqua Regia Digestion |
Be, Beryllium (ppm) | 0.53 | 0.07 | 0.48 | 0.58 | Aqua Regia Digestion |
Bi, Bismuth (ppm) | 2.28 | 0.148 | 2.21 | 2.35 | Aqua Regia Digestion |
Ca, Calcium (wt.%) | 1.31 | 0.075 | 1.28 | 1.34 | Aqua Regia Digestion |
Ce, Cerium (ppm) | 44.1 | 3.75 | 42.3 | 45.9 | Aqua Regia Digestion |
Co, Cobalt (ppm) | 14.9 | 0.87 | 14.5 | 15.3 | Aqua Regia Digestion |
Cr, Chromium (ppm) | 56 | 4.0 | 55 | 58 | Aqua Regia Digestion |
Cs, Caesium (ppm) | 6.93 | 0.392 | 6.73 | 7.13 | Aqua Regia Digestion |
Cu, Copper (wt.%) | 1.10 | 0.019 | 1.09 | 1.11 | Aqua Regia Digestion |
Dy, Dysprosium (ppm) | 2.67 | 0.133 | 2.55 | 2.79 | Aqua Regia Digestion |
Er, Erbium (ppm) | 1.48 | 0.043 | 1.44 | 1.52 | Aqua Regia Digestion |
Eu, Europium (ppm) | 0.41 | 0.07 | 0.35 | 0.48 | Aqua Regia Digestion |
Fe, Iron (wt.%) | 5.75 | 0.261 | 5.64 | 5.85 | Aqua Regia Digestion |
Ga, Gallium (ppm) | 8.42 | 0.579 | 8.10 | 8.73 | Aqua Regia Digestion |
Gd, Gadolinium (ppm) | 3.10 | 0.301 | 2.85 | 3.36 | Aqua Regia Digestion |
Ge, Germanium (ppm) | 0.16 | 0.03 | 0.13 | 0.20 | Aqua Regia Digestion |
Hf, Hafnium (ppm) | 0.47 | 0.031 | 0.45 | 0.48 | Aqua Regia Digestion |
Hg, Mercury (ppm) | 0.064 | 0.011 | 0.058 | 0.070 | Aqua Regia Digestion |
Ho, Holmium (ppm) | 0.48 | 0.043 | 0.45 | 0.52 | Aqua Regia Digestion |
In, Indium (ppm) | 0.22 | 0.009 | 0.22 | 0.22 | Aqua Regia Digestion |
K, Potassium (wt.%) | 0.809 | 0.032 | 0.796 | 0.823 | Aqua Regia Digestion |
La, Lanthanum (ppm) | 22.0 | 1.83 | 21.3 | 22.8 | Aqua Regia Digestion |
Li, Lithium (ppm) | 23.6 | 2.8 | 22.4 | 24.9 | Aqua Regia Digestion |
Lu, Lutetium (ppm) | 0.18 | 0.013 | 0.18 | 0.19 | Aqua Regia Digestion |
Mg, Magnesium (wt.%) | 1.15 | 0.034 | 1.13 | 1.16 | Aqua Regia Digestion |
Mn, Manganese (wt.%) | 0.038 | 0.001 | 0.037 | 0.039 | Aqua Regia Digestion |
Mo, Molybdenum (ppm) | 505 | 18 | 498 | 512 | Aqua Regia Digestion |
Na, Sodium (wt.%) | 0.184 | 0.020 | 0.174 | 0.193 | Aqua Regia Digestion |
Nb, Niobium (ppm) | 1.07 | 0.20 | 0.95 | 1.19 | Aqua Regia Digestion |
Nd, Neodymium (ppm) | 19.0 | 0.57 | 18.5 | 19.4 | Aqua Regia Digestion |
Ni, Nickel (ppm) | 41.3 | 1.55 | 40.7 | 41.9 | Aqua Regia Digestion |
P, Phosphorus (wt.%) | 0.091 | 0.004 | 0.089 | 0.093 | Aqua Regia Digestion |
Pb, Lead (ppm) | 51 | 1.7 | 50 | 51 | Aqua Regia Digestion |
Pr, Praseodymium (ppm) | 5.06 | 0.155 | 4.94 | 5.18 | Aqua Regia Digestion |
Rb, Rubidium (ppm) | 87 | 4.1 | 85 | 89 | Aqua Regia Digestion |
Re, Rhenium (ppb) | 351 | 27 | 335 | 367 | Aqua Regia Digestion |
S, Sulphur (wt.%) | 1.10 | 0.059 | 1.08 | 1.12 | Aqua Regia Digestion |
Sb, Antimony (ppm) | 1.02 | 0.12 | 0.96 | 1.08 | Aqua Regia Digestion |
Sc, Scandium (ppm) | 7.12 | 0.559 | 6.84 | 7.40 | Aqua Regia Digestion |
Se, Selenium (ppm) | 7.00 | 0.91 | 6.57 | 7.43 | Aqua Regia Digestion |
Sm, Samarium (ppm) | 3.49 | 0.200 | 3.33 | 3.64 | Aqua Regia Digestion |
Sn, Tin (ppm) | 4.54 | 0.257 | 4.40 | 4.68 | Aqua Regia Digestion |
Sr, Strontium (ppm) | 92 | 10 | 88 | 97 | Aqua Regia Digestion |
Tb, Terbium (ppm) | 0.46 | 0.038 | 0.43 | 0.48 | Aqua Regia Digestion |
Te, Tellurium (ppm) | 0.45 | 0.033 | 0.43 | 0.46 | Aqua Regia Digestion |
Th, Thorium (ppm) | 12.3 | 0.65 | 12.0 | 12.6 | Aqua Regia Digestion |
Ti, Titanium (wt.%) | 0.267 | 0.014 | 0.261 | 0.274 | Aqua Regia Digestion |
Tl, Thallium (ppm) | 0.47 | 0.05 | 0.45 | 0.49 | Aqua Regia Digestion |
Tm, Thulium (ppm) | 0.20 | 0.007 | 0.19 | 0.20 | Aqua Regia Digestion |
U, Uranium (ppm) | 3.32 | 0.242 | 3.22 | 3.43 | Aqua Regia Digestion |
V, Vanadium (ppm) | 108 | 5 | 105 | 110 | Aqua Regia Digestion |
W, Tungsten (ppm) | 1.70 | 0.23 | 1.59 | 1.82 | Aqua Regia Digestion |
Y, Yttrium (ppm) | 14.2 | 0.93 | 13.7 | 14.6 | Aqua Regia Digestion |
Yb, Ytterbium (ppm) | 1.26 | 0.060 | 1.21 | 1.31 | Aqua Regia Digestion |
Zn, Zinc (ppm) | 95 | 6.3 | 93 | 98 | Aqua Regia Digestion |
Zr, Zirconium (ppm) | 12.1 | 1.10 | 11.5 | 12.7 | Aqua Regia Digestion |
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