OREAS 524

OREAS 524 was prepared from a blend of iron oxide copper-gold ore, Cu-Au concentrate 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, concentrate 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.%) 2.53 0.044 2.51 2.54 4-Acid Digestion
Au, Gold (ppm) 1.54 0.046 1.53 1.56 Pb Fire Assay
Co, Cobalt (ppm) 728 31 715 742 4-Acid Digestion
Al, Aluminium (wt.%) 2.93 0.112 2.88 2.99 Peroxide Fusion ICP
As, Arsenic (ppm) 673 62 644 703 Peroxide Fusion ICP
Ba, Barium (wt.%) 2.94 0.409 2.54 3.33 Peroxide Fusion ICP
Bi, Bismuth (ppm) 17.5 1.32 16.6 18.5 Peroxide Fusion ICP
Ca, Calcium (wt.%) 3.44 0.151 3.37 3.52 Peroxide Fusion ICP
Ce, Cerium (ppm) 201 7 196 205 Peroxide Fusion ICP
Co, Cobalt (ppm) 728 39 708 748 Peroxide Fusion ICP
Cs, Caesium (ppm) 0.57 0.07 0.53 0.62 Peroxide Fusion ICP
Cu, Copper (wt.%) 2.53 0.044 2.51 2.56 Peroxide Fusion ICP
Dy, Dysprosium (ppm) 3.24 0.205 3.10 3.37 Peroxide Fusion ICP
Er, Erbium (ppm) 1.93 0.107 1.86 2.00 Peroxide Fusion ICP
Fe, Iron (wt.%) 29.20 0.707 28.88 29.52 Peroxide Fusion ICP
Ga, Gallium (ppm) 14.3 0.69 13.9 14.7 Peroxide Fusion ICP
Gd, Gadolinium (ppm) 4.06 0.254 3.84 4.28 Peroxide Fusion ICP
Hf, Hafnium (ppm) 2.99 0.56 2.40 3.58 Peroxide Fusion ICP
Ho, Holmium (ppm) 0.66 0.042 0.63 0.68 Peroxide Fusion ICP
In, Indium (ppm) 0.52 0.05 0.49 0.54 Peroxide Fusion ICP
K, Potassium (wt.%) 2.52 0.115 2.46 2.57 Peroxide Fusion ICP
La, Lanthanum (ppm) 286 12 277 294 Peroxide Fusion ICP
Li, Lithium (ppm) 16.2 2.3 15.1 17.3 Peroxide Fusion ICP
Lu, Lutetium (ppm) 0.30 0.03 0.28 0.33 Peroxide Fusion ICP
Mg, Magnesium (wt.%) 1.02 0.053 0.99 1.04 Peroxide Fusion ICP
Mn, Manganese (wt.%) 0.485 0.017 0.476 0.494 Peroxide Fusion ICP
Mo, Molybdenum (ppm) 388 27 367 408 Peroxide Fusion ICP
Nb, Niobium (ppm) 5.40 0.93 4.80 6.00 Peroxide Fusion ICP
Nd, Neodymium (ppm) 32.4 1.33 31.5 33.3 Peroxide Fusion ICP
Ni, Nickel (ppm) 71 9 66 75 Peroxide Fusion ICP
P, Phosphorus (wt.%) 0.095 0.009 0.088 0.102 Peroxide Fusion ICP
Pb, Lead (ppm) 43.2 7.0 37.4 49.1 Peroxide Fusion ICP
Pr, Praseodymium (ppm) 12.8 0.39 12.5 13.1 Peroxide Fusion ICP
Rb, Rubidium (ppm) 67 1.8 66 68 Peroxide Fusion ICP
Sb, Antimony (ppm) 11.6 1.07 10.8 12.3 Peroxide Fusion ICP
Si, Silicon (wt.%) 12.57 0.260 12.43 12.71 Peroxide Fusion ICP
Sm, Samarium (ppm) 4.50 0.299 4.27 4.73 Peroxide Fusion ICP
Sn, Tin (ppm) 14.4 2.5 13.0 15.7 Peroxide Fusion ICP
Sr, Strontium (ppm) 287 14 278 296 Peroxide Fusion ICP
Tb, Terbium (ppm) 0.54 0.08 0.49 0.60 Peroxide Fusion ICP
Th, Thorium (ppm) 8.18 0.478 7.88 8.47 Peroxide Fusion ICP
Ti, Titanium (wt.%) 0.290 0.010 0.286 0.295 Peroxide Fusion ICP
Tm, Thulium (ppm) 0.29 0.017 0.28 0.31 Peroxide Fusion ICP
U, Uranium (ppm) 59 3.0 57 61 Peroxide Fusion ICP
V, Vanadium (ppm) 115 12 106 123 Peroxide Fusion ICP
W, Tungsten (ppm) 176 16 166 187 Peroxide Fusion ICP
Y, Yttrium (ppm) 17.3 1.11 16.6 17.9 Peroxide Fusion ICP
Yb, Ytterbium (ppm) 1.94 0.124 1.86 2.02 Peroxide Fusion ICP
Ag, Silver (ppm) 4.04 0.315 3.91 4.18 4-Acid Digestion
Al, Aluminium (wt.%) 2.88 0.074 2.84 2.91 4-Acid Digestion
As, Arsenic (ppm) 660 41 640 680 4-Acid Digestion
Be, Beryllium (ppm) 0.46 0.07 0.43 0.50 4-Acid Digestion
Bi, Bismuth (ppm) 16.4 1.41 15.8 16.9 4-Acid Digestion
Ca, Calcium (wt.%) 3.27 0.136 3.21 3.33 4-Acid Digestion
Ce, Cerium (ppm) 163 24 151 175 4-Acid Digestion
Cr, Chromium (ppm) 23.2 3.4 21.5 24.9 4-Acid Digestion
Cs, Caesium (ppm) 0.53 0.033 0.52 0.55 4-Acid Digestion
Dy, Dysprosium (ppm) 2.97 0.178 2.85 3.10 4-Acid Digestion
Er, Erbium (ppm) 1.82 0.085 1.76 1.88 4-Acid Digestion
Eu, Europium (ppm) 2.11 0.068 2.06 2.15 4-Acid Digestion
Fe, Iron (wt.%) 29.25 1.310 28.60 29.90 4-Acid Digestion
Ga, Gallium (ppm) 13.5 0.99 13.0 14.0 4-Acid Digestion
Gd, Gadolinium (ppm) 3.79 0.48 3.41 4.17 4-Acid Digestion
Ge, Germanium (ppm) 0.38 0.06 0.32 0.43 4-Acid Digestion
Hf, Hafnium (ppm) 2.60 0.126 2.54 2.66 4-Acid Digestion
Ho, Holmium (ppm) 0.62 0.030 0.60 0.64 4-Acid Digestion
In, Indium (ppm) 0.51 0.031 0.50 0.53 4-Acid Digestion
K, Potassium (wt.%) 2.48 0.088 2.44 2.52 4-Acid Digestion
Li, Lithium (ppm) 15.2 1.6 14.5 16.0 4-Acid Digestion
Lu, Lutetium (ppm) 0.29 0.016 0.28 0.30 4-Acid Digestion
Mg, Magnesium (wt.%) 0.985 0.064 0.956 1.014 4-Acid Digestion
Mn, Manganese (wt.%) 0.463 0.023 0.452 0.473 4-Acid Digestion
Mo, Molybdenum (ppm) 376 24 365 386 4-Acid Digestion
Na, Sodium (wt.%) 0.182 0.013 0.176 0.188 4-Acid Digestion
Nb, Niobium (ppm) 5.25 0.280 5.12 5.39 4-Acid Digestion
Nd, Neodymium (ppm) 29.5 1.33 28.5 30.5 4-Acid Digestion
Ni, Nickel (ppm) 66 3.5 65 68 4-Acid Digestion
P, Phosphorus (wt.%) 0.092 0.006 0.089 0.095 4-Acid Digestion
Pb, Lead (ppm) 43.8 5.4 41.0 46.6 4-Acid Digestion
Pr, Praseodymium (ppm) 10.9 0.96 10.1 11.6 4-Acid Digestion
Rb, Rubidium (ppm) 65 3.5 64 67 4-Acid Digestion
Re, Rhenium (ppm) 0.18 0.009 0.18 0.19 4-Acid Digestion
S, Sulphur (wt.%) 4.73 0.175 4.65 4.81 4-Acid Digestion
Sb, Antimony (ppm) 11.4 0.74 11.0 11.7 4-Acid Digestion
Sc, Scandium (ppm) 7.04 0.77 6.71 7.38 4-Acid Digestion
Se, Selenium (ppm) 4.76 0.61 4.49 5.03 4-Acid Digestion
Sm, Samarium (ppm) 4.10 0.150 3.99 4.21 4-Acid Digestion
Sn, Tin (ppm) 12.0 0.44 11.8 12.2 4-Acid Digestion
Sr, Strontium (ppm) 194 35 177 210 4-Acid Digestion
Ta, Tantalum (ppm) 0.41 0.037 0.39 0.43 4-Acid Digestion
Tb, Terbium (ppm) 0.54 0.06 0.51 0.58 4-Acid Digestion
Te, Tellurium (ppm) 1.88 0.140 1.81 1.95 4-Acid Digestion
Th, Thorium (ppm) 6.67 0.503 6.39 6.94 4-Acid Digestion
Ti, Titanium (wt.%) 0.271 0.009 0.267 0.275 4-Acid Digestion
Tl, Thallium (ppm) 0.30 0.018 0.29 0.31 4-Acid Digestion
Tm, Thulium (ppm) 0.25 0.022 0.24 0.26 4-Acid Digestion
U, Uranium (ppm) 57 3.8 55 59 4-Acid Digestion
V, Vanadium (ppm) 107 5 105 109 4-Acid Digestion
W, Tungsten (ppm) 177 14 171 183 4-Acid Digestion
Y, Yttrium (ppm) 16.6 0.93 16.2 17.0 4-Acid Digestion
Yb, Ytterbium (ppm) 1.84 0.106 1.78 1.90 4-Acid Digestion
Zn, Zinc (ppm) 55 7 52 58 4-Acid Digestion
Zr, Zirconium (ppm) 98 4.5 96 100 4-Acid Digestion
Ag, Silver (ppm) 3.76 0.456 3.54 3.98 3-Acid Digestion (no HF)
As, Arsenic (ppm) 654 43 629 679 3-Acid Digestion (no HF)
Co, Cobalt (ppm) 716 32 696 735 3-Acid Digestion (no HF)
Cu, Copper (wt.%) 2.54 0.065 2.50 2.57 3-Acid Digestion (no HF)
Fe, Iron (wt.%) 29.36 0.781 28.98 29.74 3-Acid Digestion (no HF)
Mo, Molybdenum (ppm) 361 30 345 377 3-Acid Digestion (no HF)
S, Sulphur (wt.%) 4.98 0.277 4.77 5.20 3-Acid Digestion (no HF)
Ag, Silver (ppm) 3.70 0.393 3.44 3.95 Aqua Regia Digestion
Al, Aluminium (wt.%) 1.08 0.056 1.04 1.13 Aqua Regia Digestion
As, Arsenic (ppm) 647 44 620 673 Aqua Regia Digestion
Au, Gold (ppm) 1.48 0.090 1.44 1.52 Aqua Regia Digestion
Be, Beryllium (ppm) 0.33 0.04 0.31 0.36 Aqua Regia Digestion
Bi, Bismuth (ppm) 16.7 1.01 16.1 17.3 Aqua Regia Digestion
Ca, Calcium (wt.%) 3.11 0.102 3.04 3.17 Aqua Regia Digestion
Ce, Cerium (ppm) 181 8 174 187 Aqua Regia Digestion
Co, Cobalt (ppm) 705 40 680 731 Aqua Regia Digestion
Cr, Chromium (ppm) 22.6 1.67 21.6 23.6 Aqua Regia Digestion
Cs, Caesium (ppm) 0.46 0.06 0.41 0.51 Aqua Regia Digestion
Cu, Copper (wt.%) 2.50 0.100 2.45 2.56 Aqua Regia Digestion
Fe, Iron (wt.%) 28.42 1.015 27.79 29.06 Aqua Regia Digestion
Ga, Gallium (ppm) 12.1 1.00 11.4 12.8 Aqua Regia Digestion
Hf, Hafnium (ppm) 1.31 0.101 1.23 1.40 Aqua Regia Digestion
In, Indium (ppm) 0.50 0.044 0.46 0.54 Aqua Regia Digestion
K, Potassium (wt.%) 0.588 0.078 0.531 0.645 Aqua Regia Digestion
La, Lanthanum (ppm) 223 19 209 236 Aqua Regia Digestion
Li, Lithium (ppm) 15.4 1.5 14.2 16.6 Aqua Regia Digestion
Lu, Lutetium (ppm) 0.24 0.021 0.21 0.26 Aqua Regia Digestion
Mg, Magnesium (wt.%) 0.958 0.063 0.915 1.001 Aqua Regia Digestion
Mn, Manganese (wt.%) 0.426 0.018 0.412 0.440 Aqua Regia Digestion
Mo, Molybdenum (ppm) 353 42 324 383 Aqua Regia Digestion
Nb, Niobium (ppm) 1.59 0.106 1.50 1.68 Aqua Regia Digestion
Ni, Nickel (ppm) 63 4.0 60 65 Aqua Regia Digestion
P, Phosphorus (wt.%) 0.092 0.007 0.087 0.097 Aqua Regia Digestion
Pb, Lead (ppm) 47.2 6.1 41.9 52.5 Aqua Regia Digestion
Rb, Rubidium (ppm) 29.1 1.82 27.3 30.9 Aqua Regia Digestion
S, Sulphur (wt.%) 4.67 0.286 4.47 4.87 Aqua Regia Digestion
Sc, Scandium (ppm) 6.09 0.602 5.68 6.50 Aqua Regia Digestion
Se, Selenium (ppm) 5.28 0.74 4.67 5.90 Aqua Regia Digestion
Sn, Tin (ppm) 10.1 0.26 9.9 10.3 Aqua Regia Digestion
Sr, Strontium (ppm) 58 10 51 65 Aqua Regia Digestion
Tb, Terbium (ppm) 0.54 0.05 0.47 0.61 Aqua Regia Digestion
Th, Thorium (ppm) 6.79 0.626 6.30 7.28 Aqua Regia Digestion
Ti, Titanium (wt.%) 0.145 0.019 0.130 0.160 Aqua Regia Digestion
Tl, Thallium (ppm) 0.17 0.014 0.16 0.18 Aqua Regia Digestion
U, Uranium (ppm) 55 2.3 52 57 Aqua Regia Digestion
V, Vanadium (ppm) 106 3 104 108 Aqua Regia Digestion
W, Tungsten (ppm) 158 11 149 166 Aqua Regia Digestion
Y, Yttrium (ppm) 14.2 1.07 13.4 15.0 Aqua Regia Digestion
Yb, Ytterbium (ppm) 1.58 0.17 1.35 1.82 Aqua Regia Digestion
Zn, Zinc (ppm) 52 2.9 50 54 Aqua Regia Digestion
Zr, Zirconium (ppm) 49.3 5.1 45.2 53.3 Aqua Regia Digestion
S, Sulphur (wt.%) 5.56 0.118 5.51 5.62 Infrared Combustion
SG, Specific Gravity (Unity) 3.49 0.050 3.46 3.52 Gas / Liquid Pycnometry
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