OREAS 522

OREAS 522 was prepared from a blend of iron oxide copper-gold ore and magnetite-bearing waste rock (altered, porphyritic, intermediate volcanic rock). The mineralisation is hosted by a breccia comprising strongly altered and replaced felsic volcanic fragments in a matrix largely composed of magnetite, calcite, pyrite, biotite, chalcopyrite, K feldspar titanite and quartz. Accessory minerals include garnet, barite, molybdenite, fluorite, amphibole, apatite, monazite, arsenopyrite, a LREE fluorcarbonate, galena, cobaltite, sphalerite, scheelite, uraninite and tourmaline. Copper occurs as native copper, bornite and chalcopyrite. Gold occurs mainly in the molecular framework of the chalcopyrite. Significant levels of cobalt, molybdenum, rare earth elements and low levels of uranium are also present. The ore and waste materials were sourced from the Ernest Henry Mine located about 38 kilometres north-east of Cloncurry in north-west Queensland.

Analyte Certified Value 1SD 95% Confidence Limits Low 95% Confidence Limits High Method
Cu, Copper (wt.%) 0.916 0.026 0.906 0.927 4-Acid Digestion
Au, Gold (ppm) 0.574 0.018 0.567 0.580 Pb Fire Assay
Co, Cobalt (ppm) 550 19 542 558 4-Acid Digestion
Al, Aluminium (wt.%) 4.02 0.119 3.96 4.07 Peroxide Fusion ICP
As, Arsenic (ppm) 522 33 508 536 Peroxide Fusion ICP
Ba, Barium (wt.%) 2.38 0.192 2.19 2.56 Peroxide Fusion ICP
Bi, Bismuth (ppm) 9.12 0.632 8.67 9.56 Peroxide Fusion ICP
Ca, Calcium (wt.%) 3.87 0.188 3.77 3.96 Peroxide Fusion ICP
Ce, Cerium (ppm) 163 7 159 167 Peroxide Fusion ICP
Co, Cobalt (ppm) 555 34 537 573 Peroxide Fusion ICP
Cr, Chromium (ppm) 34.5 6.2 30.3 38.8 Peroxide Fusion ICP
Cs, Caesium (ppm) 0.67 0.062 0.63 0.71 Peroxide Fusion ICP
Cu, Copper (wt.%) 0.923 0.024 0.911 0.936 Peroxide Fusion ICP
Dy, Dysprosium (ppm) 3.50 0.261 3.34 3.67 Peroxide Fusion ICP
Er, Erbium (ppm) 2.13 0.099 2.05 2.20 Peroxide Fusion ICP
Fe, Iron (wt.%) 24.72 0.594 24.43 25.00 Peroxide Fusion ICP
Ga, Gallium (ppm) 16.3 0.83 15.8 16.9 Peroxide Fusion ICP
Gd, Gadolinium (ppm) 4.20 0.385 3.88 4.51 Peroxide Fusion ICP
Hf, Hafnium (ppm) 3.35 0.54 2.95 3.75 Peroxide Fusion ICP
Ho, Holmium (ppm) 0.72 0.08 0.67 0.77 Peroxide Fusion ICP
In, Indium (ppm) 0.25 0.05 0.22 0.28 Peroxide Fusion ICP
K, Potassium (wt.%) 2.89 0.133 2.82 2.96 Peroxide Fusion ICP
La, Lanthanum (ppm) 222 10 215 228 Peroxide Fusion ICP
Lu, Lutetium (ppm) 0.35 0.04 0.31 0.38 Peroxide Fusion ICP
Mg, Magnesium (wt.%) 1.15 0.035 1.13 1.17 Peroxide Fusion ICP
Mn, Manganese (wt.%) 0.418 0.020 0.408 0.428 Peroxide Fusion ICP
Mo, Molybdenum (ppm) 207 15 196 217 Peroxide Fusion ICP
Nb, Niobium (ppm) 6.00 0.90 5.27 6.73 Peroxide Fusion ICP
Nd, Neodymium (ppm) 28.9 2.04 27.5 30.4 Peroxide Fusion ICP
Ni, Nickel (ppm) 72 9 67 77 Peroxide Fusion ICP
P, Phosphorus (wt.%) 0.089 0.007 0.086 0.093 Peroxide Fusion ICP
Pr, Praseodymium (ppm) 10.4 0.81 9.8 11.0 Peroxide Fusion ICP
Rb, Rubidium (ppm) 84 3.2 83 86 Peroxide Fusion ICP
S, Sulphur (wt.%) 3.09 0.092 3.03 3.15 Peroxide Fusion ICP
Sb, Antimony (ppm) 8.24 0.567 7.94 8.55 Peroxide Fusion ICP
Sc, Scandium (ppm) 10.4 0.53 9.9 10.9 Peroxide Fusion ICP
Si, Silicon (wt.%) 15.81 0.420 15.55 16.08 Peroxide Fusion ICP
Sm, Samarium (ppm) 4.32 0.424 4.00 4.64 Peroxide Fusion ICP
Sn, Tin (ppm) 10.8 0.86 10.1 11.5 Peroxide Fusion ICP
Sr, Strontium (ppm) 236 8 232 241 Peroxide Fusion ICP
Tb, Terbium (ppm) 0.61 0.042 0.59 0.63 Peroxide Fusion ICP
Th, Thorium (ppm) 8.69 0.667 8.32 9.07 Peroxide Fusion ICP
Ti, Titanium (wt.%) 0.394 0.009 0.391 0.397 Peroxide Fusion ICP
Tm, Thulium (ppm) 0.33 0.03 0.30 0.35 Peroxide Fusion ICP
U, Uranium (ppm) 44.0 2.68 42.3 45.8 Peroxide Fusion ICP
V, Vanadium (ppm) 182 17 170 194 Peroxide Fusion ICP
W, Tungsten (ppm) 134 12 126 141 Peroxide Fusion ICP
Y, Yttrium (ppm) 19.3 0.93 18.7 19.8 Peroxide Fusion ICP
Yb, Ytterbium (ppm) 2.11 0.165 2.01 2.21 Peroxide Fusion ICP
Zr, Zirconium (ppm) 111 11 96 125 Peroxide Fusion ICP
Ag, Silver (ppm) 1.31 0.114 1.26 1.37 4-Acid Digestion
Al, Aluminium (wt.%) 3.95 0.120 3.90 4.00 4-Acid Digestion
As, Arsenic (ppm) 490 26 477 503 4-Acid Digestion
Be, Beryllium (ppm) 0.70 0.09 0.65 0.74 4-Acid Digestion
Bi, Bismuth (ppm) 8.72 0.499 8.51 8.92 4-Acid Digestion
Ca, Calcium (wt.%) 3.65 0.144 3.59 3.70 4-Acid Digestion
Ce, Cerium (ppm) 148 13 142 153 4-Acid Digestion
Cr, Chromium (ppm) 29.6 3.7 27.8 31.4 4-Acid Digestion
Cs, Caesium (ppm) 0.64 0.055 0.61 0.67 4-Acid Digestion
Dy, Dysprosium (ppm) 3.24 0.185 3.10 3.37 4-Acid Digestion
Er, Erbium (ppm) 1.97 0.088 1.91 2.03 4-Acid Digestion
Eu, Europium (ppm) 1.88 0.074 1.83 1.93 4-Acid Digestion
Fe, Iron (wt.%) 24.63 0.998 24.15 25.12 4-Acid Digestion
Ga, Gallium (ppm) 16.0 0.83 15.6 16.4 4-Acid Digestion
Gd, Gadolinium (ppm) 3.87 0.56 3.45 4.29 4-Acid Digestion
Hf, Hafnium (ppm) 2.96 0.146 2.89 3.03 4-Acid Digestion
Ho, Holmium (ppm) 0.66 0.042 0.63 0.69 4-Acid Digestion
In, Indium (ppm) 0.23 0.03 0.22 0.24 4-Acid Digestion
K, Potassium (wt.%) 2.83 0.103 2.78 2.87 4-Acid Digestion
La, Lanthanum (ppm) 171 30 157 184 4-Acid Digestion
Li, Lithium (ppm) 16.2 1.51 15.6 16.9 4-Acid Digestion
Lu, Lutetium (ppm) 0.31 0.020 0.29 0.32 4-Acid Digestion
Mg, Magnesium (wt.%) 1.12 0.067 1.09 1.15 4-Acid Digestion
Mn, Manganese (wt.%) 0.397 0.022 0.387 0.407 4-Acid Digestion
Mo, Molybdenum (ppm) 206 12 200 211 4-Acid Digestion
Na, Sodium (wt.%) 0.633 0.043 0.613 0.653 4-Acid Digestion
Nb, Niobium (ppm) 5.66 0.368 5.47 5.85 4-Acid Digestion
Nd, Neodymium (ppm) 27.2 1.20 26.4 28.0 4-Acid Digestion
Ni, Nickel (ppm) 70 4.4 68 72 4-Acid Digestion
P, Phosphorus (wt.%) 0.089 0.005 0.087 0.091 4-Acid Digestion
Pb, Lead (ppm) 12.5 1.3 11.8 13.1 4-Acid Digestion
Pr, Praseodymium (ppm) 9.76 0.631 9.28 10.24 4-Acid Digestion
Rb, Rubidium (ppm) 82 3.3 81 83 4-Acid Digestion
Re, Rhenium (ppm) 0.098 0.005 0.096 0.101 4-Acid Digestion
S, Sulphur (wt.%) 2.50 0.103 2.45 2.54 4-Acid Digestion
Sb, Antimony (ppm) 7.93 0.465 7.71 8.15 4-Acid Digestion
Sc, Scandium (ppm) 10.9 0.83 10.5 11.2 4-Acid Digestion
Se, Selenium (ppm) 2.74 0.51 2.49 2.98 4-Acid Digestion
Sm, Samarium (ppm) 4.17 0.196 4.02 4.32 4-Acid Digestion
Sn, Tin (ppm) 9.32 0.686 9.03 9.61 4-Acid Digestion
Sr, Strontium (ppm) 199 20 189 208 4-Acid Digestion
Ta, Tantalum (ppm) 0.44 0.06 0.40 0.47 4-Acid Digestion
Tb, Terbium (ppm) 0.59 0.053 0.55 0.62 4-Acid Digestion
Te, Tellurium (ppm) 1.14 0.092 1.11 1.18 4-Acid Digestion
Th, Thorium (ppm) 7.53 0.627 7.17 7.88 4-Acid Digestion
Ti, Titanium (wt.%) 0.344 0.018 0.336 0.352 4-Acid Digestion
Tl, Thallium (ppm) 0.29 0.016 0.28 0.29 4-Acid Digestion
Tm, Thulium (ppm) 0.28 0.015 0.27 0.29 4-Acid Digestion
U, Uranium (ppm) 42.2 3.17 40.7 43.8 4-Acid Digestion
V, Vanadium (ppm) 164 9 160 168 4-Acid Digestion
W, Tungsten (ppm) 135 11 130 140 4-Acid Digestion
Y, Yttrium (ppm) 18.5 0.94 18.1 18.9 4-Acid Digestion
Yb, Ytterbium (ppm) 1.97 0.115 1.90 2.03 4-Acid Digestion
Zn, Zinc (ppm) 30.2 2.14 29.1 31.3 4-Acid Digestion
Zr, Zirconium (ppm) 112 6 109 114 4-Acid Digestion
Ag, Silver (ppm) 1.19 0.18 1.05 1.34 3-Acid Digestion (no HF)
As, Arsenic (ppm) 502 17 493 512 3-Acid Digestion (no HF)
Co, Cobalt (ppm) 547 22 534 560 3-Acid Digestion (no HF)
Cu, Copper (wt.%) 0.908 0.022 0.896 0.920 3-Acid Digestion (no HF)
Fe, Iron (wt.%) 24.91 0.563 24.65 25.17 3-Acid Digestion (no HF)
Mo, Molybdenum (ppm) 193 9 188 198 3-Acid Digestion (no HF)
S, Sulphur (wt.%) 2.74 0.167 2.63 2.85 3-Acid Digestion (no HF)
Ag, Silver (ppm) 1.23 0.102 1.17 1.29 Aqua Regia Digestion
Al, Aluminium (wt.%) 1.29 0.044 1.26 1.32 Aqua Regia Digestion
As, Arsenic (ppm) 492 25 476 507 Aqua Regia Digestion
Au, Gold (ppm) 0.549 0.025 0.541 0.557 Aqua Regia Digestion
Be, Beryllium (ppm) 0.41 0.06 0.36 0.47 Aqua Regia Digestion
Bi, Bismuth (ppm) 8.87 0.487 8.59 9.15 Aqua Regia Digestion
Ca, Calcium (wt.%) 3.43 0.154 3.33 3.53 Aqua Regia Digestion
Ce, Cerium (ppm) 153 9 147 160 Aqua Regia Digestion
Co, Cobalt (ppm) 533 33 512 553 Aqua Regia Digestion
Cr, Chromium (ppm) 28.6 1.32 27.7 29.6 Aqua Regia Digestion
Cs, Caesium (ppm) 0.52 0.05 0.48 0.57 Aqua Regia Digestion
Cu, Copper (wt.%) 0.904 0.031 0.885 0.922 Aqua Regia Digestion
Fe, Iron (wt.%) 24.13 0.615 23.75 24.51 Aqua Regia Digestion
Ga, Gallium (ppm) 13.2 1.5 12.1 14.3 Aqua Regia Digestion
Hf, Hafnium (ppm) 1.21 0.066 1.15 1.27 Aqua Regia Digestion
In, Indium (ppm) 0.23 0.023 0.21 0.25 Aqua Regia Digestion
K, Potassium (wt.%) 0.528 0.020 0.515 0.542 Aqua Regia Digestion
La, Lanthanum (ppm) 192 16 181 204 Aqua Regia Digestion
Li, Lithium (ppm) 15.9 1.55 14.7 17.1 Aqua Regia Digestion
Lu, Lutetium (ppm) 0.23 0.015 0.21 0.25 Aqua Regia Digestion
Mg, Magnesium (wt.%) 1.07 0.056 1.03 1.11 Aqua Regia Digestion
Mn, Manganese (wt.%) 0.367 0.020 0.353 0.382 Aqua Regia Digestion
Mo, Molybdenum (ppm) 198 12 189 207 Aqua Regia Digestion
Nb, Niobium (ppm) 0.91 0.066 0.84 0.97 Aqua Regia Digestion
Ni, Nickel (ppm) 64 3.2 62 66 Aqua Regia Digestion
P, Phosphorus (wt.%) 0.089 0.005 0.085 0.093 Aqua Regia Digestion
Pb, Lead (ppm) 12.5 1.18 11.5 13.4 Aqua Regia Digestion
Rb, Rubidium (ppm) 30.9 1.68 29.4 32.5 Aqua Regia Digestion
S, Sulphur (wt.%) 2.59 0.127 2.50 2.69 Aqua Regia Digestion
Sb, Antimony (ppm) 5.39 1.02 4.68 6.09 Aqua Regia Digestion
Sc, Scandium (ppm) 8.18 0.87 7.59 8.76 Aqua Regia Digestion
Se, Selenium (ppm) 3.06 0.56 2.61 3.50 Aqua Regia Digestion
Sn, Tin (ppm) 7.59 0.158 7.46 7.73 Aqua Regia Digestion
Sr, Strontium (ppm) 64 7 59 69 Aqua Regia Digestion
Tb, Terbium (ppm) 0.54 0.038 0.49 0.59 Aqua Regia Digestion
Te, Tellurium (ppm) 1.11 0.083 1.05 1.17 Aqua Regia Digestion
Th, Thorium (ppm) 7.33 0.573 6.88 7.77 Aqua Regia Digestion
Ti, Titanium (wt.%) 0.146 0.021 0.131 0.161 Aqua Regia Digestion
Tl, Thallium (ppm) 0.13 0.011 0.12 0.14 Aqua Regia Digestion
U, Uranium (ppm) 40.2 3.47 37.5 42.9 Aqua Regia Digestion
V, Vanadium (ppm) 153 8 147 158 Aqua Regia Digestion
W, Tungsten (ppm) 113 10 106 121 Aqua Regia Digestion
Y, Yttrium (ppm) 14.9 1.34 13.9 15.9 Aqua Regia Digestion
Yb, Ytterbium (ppm) 1.57 0.119 1.41 1.72 Aqua Regia Digestion
Zn, Zinc (ppm) 28.3 1.67 27.3 29.3 Aqua Regia Digestion
Zr, Zirconium (ppm) 45.7 3.55 42.7 48.8 Aqua Regia Digestion
S, Sulphur (wt.%) 3.11 0.082 3.07 3.14 Infrared Combustion
SG, Specific Gravity (Unity) 3.26 0.076 3.22 3.30 Gas / Liquid Pycnometry
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