Specifications
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CRM State:
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Matrix:
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Mineralisation:
OREAS 627 was prepared from a blend of polymetallic (Au-Zn-Cu-Pb-Ag) ore, barren rhyodacite and minor additions of Cu, Zn and Pb concentrates. The ore was sourced from the Rosebery mine located in the north-west region of Tasmania, Australia, approximately 300 kilometres north-west of Hobart and 125 kilometres south of Burnie. The key minerals of economic importance include sphalerite, galena, pyrite, chalcopyrite and electrum. The barren rhyodacite was sourced from the rhyodacitic unit of the Mt Dandenong Igneous Complex located approximately 34km east of Melbourne (Victoria), Australia.
Thirty-one commercial analytical laboratories participated in the program to certify the elements reported below. The following methods were employed:
Instrumental neutron activation analysis for Au on 20 x 85mg subsamples was also undertaken at ANSTO, Lucas Heights to confirm homogeneity (see Table 5 of Certificate).
Analyte | Certified Value | 1SD | Expanded Uncertainty Low | Expanded Uncertainty High | Method |
---|---|---|---|---|---|
Zn, Zinc (wt.%) | 10.04 | 0.312 | 9.82 | 10.25 | 4-Acid Digestion |
Cu, Copper (wt.%) | 0.477 | 0.020 | 0.465 | 0.489 | 4-Acid Digestion |
Au, Gold (ppm) | 1.88 | 0.063 | 1.86 | 1.90 | Pb Fire Assay |
Au, Gold (ppm) | 1.82 | 0.092 | 1.78 | 1.87 | Aqua Regia Digestion (sample weights 10-50g) |
S, Sulphur (wt.%) | 11.05 | 0.314 | 10.83 | 11.27 | Infrared Combustion |
Al, Aluminium (wt.%) | 5.65 | 0.155 | 5.52 | 5.78 | Peroxide Fusion ICP |
As, Arsenic (ppm) | 315 | 19 | 298 | 333 | Peroxide Fusion ICP |
Ba, Barium (ppm) | 4384 | 259 | 4200 | 4568 | Peroxide Fusion ICP |
Bi, Bismuth (ppm) | 43.7 | 3.28 | 40.2 | 47.2 | Peroxide Fusion ICP |
Ca, Calcium (wt.%) | 0.782 | 0.032 | 0.741 | 0.822 | Peroxide Fusion ICP |
Cd, Cadmium (ppm) | 263 | 9 | 251 | 274 | Peroxide Fusion ICP |
Ce, Cerium (ppm) | 70 | 4.3 | 64 | 77 | Peroxide Fusion ICP |
Co, Cobalt (ppm) | 8.87 | 1.20 | 7.79 | 9.96 | Peroxide Fusion ICP |
Cs, Caesium (ppm) | 5.14 | 0.233 | 4.55 | 5.73 | Peroxide Fusion ICP |
Cu, Copper (wt.%) | 0.482 | 0.016 | 0.469 | 0.495 | Peroxide Fusion ICP |
Dy, Dysprosium (ppm) | 3.42 | 0.250 | 3.08 | 3.76 | Peroxide Fusion ICP |
Er, Erbium (ppm) | 1.69 | 0.119 | 1.47 | 1.91 | Peroxide Fusion ICP |
Eu, Europium (ppm) | 1.42 | 0.22 | 1.11 | 1.73 | Peroxide Fusion ICP |
Fe, Iron (wt.%) | 6.82 | 0.179 | 6.66 | 6.97 | Peroxide Fusion ICP |
Ga, Gallium (ppm) | 18.3 | 1.63 | 16.6 | 20.1 | Peroxide Fusion ICP |
Gd, Gadolinium (ppm) | 4.99 | 0.310 | 4.59 | 5.40 | Peroxide Fusion ICP |
Ge, Germanium (ppm) | 2.22 | 0.35 | 1.81 | 2.63 | Peroxide Fusion ICP |
Ho, Holmium (ppm) | 0.63 | 0.061 | 0.51 | 0.75 | Peroxide Fusion ICP |
In, Indium (ppm) | 9.12 | 0.652 | 8.31 | 9.93 | Peroxide Fusion ICP |
K, Potassium (wt.%) | 2.56 | 0.052 | 2.48 | 2.64 | Peroxide Fusion ICP |
La, Lanthanum (ppm) | 34.5 | 1.48 | 32.5 | 36.4 | Peroxide Fusion ICP |
Li, Lithium (ppm) | 20.1 | 3.3 | 17.7 | 22.5 | Peroxide Fusion ICP |
Lu, Lutetium (ppm) | 0.21 | 0.015 | 0.19 | 0.23 | Peroxide Fusion ICP |
Mg, Magnesium (wt.%) | 0.396 | 0.021 | 0.378 | 0.414 | Peroxide Fusion ICP |
Mn, Manganese (wt.%) | 0.711 | 0.020 | 0.694 | 0.728 | Peroxide Fusion ICP |
Mo, Molybdenum (ppm) | 32.5 | 2.84 | 29.8 | 35.1 | Peroxide Fusion ICP |
Nb, Niobium (ppm) | 11.2 | 1.1 | 9.6 | 12.8 | Peroxide Fusion ICP |
Nd, Neodymium (ppm) | 30.1 | 1.91 | 27.7 | 32.4 | Peroxide Fusion ICP |
P, Phosphorus (wt.%) | 0.038 | 0.008 | 0.028 | 0.048 | Peroxide Fusion ICP |
Pb, Lead (wt.%) | 2.21 | 0.076 | 2.15 | 2.26 | Peroxide Fusion ICP |
Pr, Praseodymium (ppm) | 8.27 | 0.294 | 7.70 | 8.84 | Peroxide Fusion ICP |
Rb, Rubidium (ppm) | 127 | 7 | 119 | 135 | Peroxide Fusion ICP |
S, Sulphur (wt.%) | 10.75 | 0.329 | 10.44 | 11.06 | Peroxide Fusion ICP |
Sb, Antimony (ppm) | 148 | 18 | 137 | 158 | Peroxide Fusion ICP |
Sc, Scandium (ppm) | 5.49 | 0.62 | 4.37 | 6.62 | Peroxide Fusion ICP |
Si, Silicon (wt.%) | 22.44 | 0.353 | 21.93 | 22.95 | Peroxide Fusion ICP |
Sm, Samarium (ppm) | 5.72 | 0.400 | 5.26 | 6.18 | Peroxide Fusion ICP |
Sr, Strontium (ppm) | 113 | 6 | 109 | 117 | Peroxide Fusion ICP |
Tb, Terbium (ppm) | 0.68 | 0.051 | 0.60 | 0.76 | Peroxide Fusion ICP |
Th, Thorium (ppm) | 12.1 | 1.07 | 11.0 | 13.1 | Peroxide Fusion ICP |
Ti, Titanium (wt.%) | 0.152 | 0.005 | 0.145 | 0.158 | Peroxide Fusion ICP |
Tl, Thallium (ppm) | 14.4 | 0.94 | 13.4 | 15.5 | Peroxide Fusion ICP |
Tm, Thulium (ppm) | 0.23 | 0.03 | 0.16 | 0.31 | Peroxide Fusion ICP |
U, Uranium (ppm) | 5.23 | 0.450 | 4.78 | 5.68 | Peroxide Fusion ICP |
V, Vanadium (ppm) | 23.0 | 1.96 | 20.3 | 25.8 | Peroxide Fusion ICP |
W, Tungsten (ppm) | 8.45 | 1.13 | 6.92 | 9.98 | Peroxide Fusion ICP |
Y, Yttrium (ppm) | 18.0 | 1.13 | 17.0 | 19.1 | Peroxide Fusion ICP |
Yb, Ytterbium (ppm) | 1.50 | 0.105 | 1.32 | 1.68 | Peroxide Fusion ICP |
Zn, Zinc (wt.%) | 10.04 | 0.226 | 9.82 | 10.26 | Peroxide Fusion ICP |
Ag, Silver (ppm) | 62.8 | 1.80 | 61.1 | 64.4 | 4-Acid Digestion |
Al, Aluminium (wt.%) | 5.49 | 0.176 | 5.35 | 5.63 | 4-Acid Digestion |
As, Arsenic (ppm) | 309 | 14 | 299 | 319 | 4-Acid Digestion |
Be, Beryllium (ppm) | 1.81 | 0.106 | 1.72 | 1.89 | 4-Acid Digestion |
Bi, Bismuth (ppm) | 44.6 | 2.87 | 42.4 | 46.8 | 4-Acid Digestion |
Ca, Calcium (wt.%) | 0.776 | 0.037 | 0.749 | 0.803 | 4-Acid Digestion |
Cd, Cadmium (ppm) | 259 | 12 | 250 | 268 | 4-Acid Digestion |
Ce, Cerium (ppm) | 53 | 10 | 47 | 59 | 4-Acid Digestion |
Co, Cobalt (ppm) | 7.54 | 0.566 | 7.13 | 7.94 | 4-Acid Digestion |
Cr, Chromium (ppm) | 18.1 | 2.7 | 15.8 | 20.4 | 4-Acid Digestion |
Cs, Caesium (ppm) | 4.93 | 0.227 | 4.71 | 5.16 | 4-Acid Digestion |
Dy, Dysprosium (ppm) | 3.44 | 0.199 | 3.10 | 3.78 | 4-Acid Digestion |
Er, Erbium (ppm) | 1.46 | 0.17 | 1.24 | 1.69 | 4-Acid Digestion |
Eu, Europium (ppm) | 1.32 | 0.047 | 1.20 | 1.45 | 4-Acid Digestion |
Fe, Iron (wt.%) | 6.86 | 0.230 | 6.69 | 7.03 | 4-Acid Digestion |
Ga, Gallium (ppm) | 18.9 | 1.10 | 17.9 | 19.8 | 4-Acid Digestion |
Gd, Gadolinium (ppm) | 4.87 | 0.83 | 3.89 | 5.84 | 4-Acid Digestion |
Hf, Hafnium (ppm) | 4.38 | 0.214 | 4.14 | 4.62 | 4-Acid Digestion |
Ho, Holmium (ppm) | 0.57 | 0.035 | 0.51 | 0.64 | 4-Acid Digestion |
In, Indium (ppm) | 8.83 | 0.448 | 8.44 | 9.21 | 4-Acid Digestion |
K, Potassium (wt.%) | 2.51 | 0.107 | 2.44 | 2.58 | 4-Acid Digestion |
La, Lanthanum (ppm) | 22.6 | 7.3 | 18.9 | 26.2 | 4-Acid Digestion |
Li, Lithium (ppm) | 17.7 | 1.15 | 16.6 | 18.8 | 4-Acid Digestion |
Lu, Lutetium (ppm) | 0.19 | 0.02 | 0.16 | 0.22 | 4-Acid Digestion |
Mg, Magnesium (wt.%) | 0.382 | 0.023 | 0.366 | 0.398 | 4-Acid Digestion |
Mn, Manganese (wt.%) | 0.703 | 0.031 | 0.684 | 0.723 | 4-Acid Digestion |
Mo, Molybdenum (ppm) | 31.3 | 1.60 | 30.1 | 32.6 | 4-Acid Digestion |
Na, Sodium (wt.%) | 1.07 | 0.037 | 1.04 | 1.10 | 4-Acid Digestion |
Nb, Niobium (ppm) | 10.4 | 1.01 | 9.7 | 11.0 | 4-Acid Digestion |
Nd, Neodymium (ppm) | 31.4 | 2.88 | 27.1 | 35.7 | 4-Acid Digestion |
Ni, Nickel (ppm) | 7.69 | 0.508 | 7.03 | 8.35 | 4-Acid Digestion |
P, Phosphorus (wt.%) | 0.037 | 0.002 | 0.035 | 0.039 | 4-Acid Digestion |
Pb, Lead (wt.%) | 2.26 | 0.067 | 2.21 | 2.32 | 4-Acid Digestion |
Pr, Praseodymium (ppm) | 7.53 | 1.55 | 5.71 | 9.34 | 4-Acid Digestion |
Rb, Rubidium (ppm) | 122 | 10 | 115 | 130 | 4-Acid Digestion |
Re, Rhenium (ppm) | < 0.005 | IND | IND | IND | 4-Acid Digestion |
S, Sulphur (wt.%) | 10.00 | 0.982 | 9.30 | 10.71 | 4-Acid Digestion |
Sb, Antimony (ppm) | 142 | 6 | 137 | 147 | 4-Acid Digestion |
Sc, Scandium (ppm) | 5.13 | 0.484 | 4.77 | 5.49 | 4-Acid Digestion |
Sm, Samarium (ppm) | 6.24 | 0.304 | 5.66 | 6.82 | 4-Acid Digestion |
Sn, Tin (ppm) | 3.42 | 0.186 | 3.22 | 3.62 | 4-Acid Digestion |
Sr, Strontium (ppm) | 91 | 10 | 85 | 96 | 4-Acid Digestion |
Ta, Tantalum (ppm) | 0.79 | 0.11 | 0.72 | 0.86 | 4-Acid Digestion |
Tb, Terbium (ppm) | 0.61 | 0.09 | 0.53 | 0.70 | 4-Acid Digestion |
Te, Tellurium (ppm) | 0.13 | 0.03 | 0.09 | 0.16 | 4-Acid Digestion |
Th, Thorium (ppm) | 9.73 | 1.63 | 8.85 | 10.60 | 4-Acid Digestion |
Ti, Titanium (wt.%) | 0.137 | 0.009 | 0.130 | 0.143 | 4-Acid Digestion |
Tl, Thallium (ppm) | 14.2 | 0.82 | 13.5 | 14.9 | 4-Acid Digestion |
Tm, Thulium (ppm) | 0.21 | 0.009 | 0.19 | 0.23 | 4-Acid Digestion |
U, Uranium (ppm) | 4.83 | 0.284 | 4.61 | 5.05 | 4-Acid Digestion |
V, Vanadium (ppm) | 23.8 | 1.35 | 22.6 | 24.9 | 4-Acid Digestion |
W, Tungsten (ppm) | 8.25 | 0.576 | 7.80 | 8.71 | 4-Acid Digestion |
Y, Yttrium (ppm) | 13.9 | 1.8 | 12.9 | 14.9 | 4-Acid Digestion |
Yb, Ytterbium (ppm) | 1.32 | 0.14 | 1.17 | 1.47 | 4-Acid Digestion |
Zr, Zirconium (ppm) | 154 | 9 | 148 | 160 | 4-Acid Digestion |
Ag, Silver (ppm) | 62.0 | 2.47 | 60.5 | 63.6 | Aqua Regia Digestion |
Al, Aluminium (wt.%) | 0.755 | 0.055 | 0.706 | 0.805 | Aqua Regia Digestion |
As, Arsenic (ppm) | 299 | 13 | 290 | 308 | Aqua Regia Digestion |
B, Boron (ppm) | < 10.0 | IND | IND | IND | Aqua Regia Digestion |
Be, Beryllium (ppm) | 0.47 | 0.07 | 0.43 | 0.52 | Aqua Regia Digestion |
Bi, Bismuth (ppm) | 44.2 | 2.32 | 42.3 | 46.0 | Aqua Regia Digestion |
Ca, Calcium (wt.%) | 0.645 | 0.022 | 0.620 | 0.671 | Aqua Regia Digestion |
Cd, Cadmium (ppm) | 251 | 13 | 242 | 259 | Aqua Regia Digestion |
Ce, Cerium (ppm) | 35.2 | 5.6 | 31.8 | 38.6 | Aqua Regia Digestion |
Co, Cobalt (ppm) | 7.10 | 0.622 | 6.71 | 7.49 | Aqua Regia Digestion |
Cr, Chromium (ppm) | 15.9 | 1.21 | 14.7 | 17.2 | Aqua Regia Digestion |
Cs, Caesium (ppm) | 1.67 | 0.18 | 1.55 | 1.80 | Aqua Regia Digestion |
Cu, Copper (wt.%) | 0.481 | 0.022 | 0.467 | 0.495 | Aqua Regia Digestion |
Fe, Iron (wt.%) | 6.34 | 0.265 | 6.17 | 6.50 | Aqua Regia Digestion |
Ga, Gallium (ppm) | 3.97 | 0.46 | 3.65 | 4.30 | Aqua Regia Digestion |
Ge, Germanium (ppm) | 0.095 | 0.028 | 0.066 | 0.125 | Aqua Regia Digestion |
Hf, Hafnium (ppm) | 1.07 | 0.18 | 0.96 | 1.18 | Aqua Regia Digestion |
Hg, Mercury (ppm) | 3.42 | 0.270 | 3.21 | 3.64 | Aqua Regia Digestion |
In, Indium (ppm) | 8.80 | 0.620 | 8.39 | 9.21 | Aqua Regia Digestion |
K, Potassium (wt.%) | 0.318 | 0.040 | 0.297 | 0.339 | Aqua Regia Digestion |
La, Lanthanum (ppm) | 15.6 | 1.8 | 14.4 | 16.9 | Aqua Regia Digestion |
Li, Lithium (ppm) | 5.18 | 0.62 | 4.46 | 5.90 | Aqua Regia Digestion |
Lu, Lutetium (ppm) | 0.064 | 0.009 | 0.048 | 0.080 | Aqua Regia Digestion |
Mg, Magnesium (wt.%) | 0.231 | 0.014 | 0.218 | 0.243 | Aqua Regia Digestion |
Mn, Manganese (wt.%) | 0.644 | 0.033 | 0.624 | 0.665 | Aqua Regia Digestion |
Mo, Molybdenum (ppm) | 28.7 | 1.87 | 27.1 | 30.3 | Aqua Regia Digestion |
Na, Sodium (wt.%) | 0.041 | 0.007 | 0.038 | 0.044 | Aqua Regia Digestion |
Nb, Niobium (ppm) | 0.79 | 0.16 | 0.68 | 0.90 | Aqua Regia Digestion |
Ni, Nickel (ppm) | 7.01 | 0.78 | 6.44 | 7.57 | Aqua Regia Digestion |
P, Phosphorus (wt.%) | 0.032 | 0.002 | 0.030 | 0.033 | Aqua Regia Digestion |
Pb, Lead (wt.%) | 2.24 | 0.066 | 2.19 | 2.28 | Aqua Regia Digestion |
Rb, Rubidium (ppm) | 17.7 | 1.9 | 16.4 | 18.9 | Aqua Regia Digestion |
S, Sulphur (wt.%) | 9.71 | 0.485 | 9.27 | 10.15 | Aqua Regia Digestion |
Sb, Antimony (ppm) | 113 | 11 | 106 | 119 | Aqua Regia Digestion |
Sc, Scandium (ppm) | 1.31 | 0.27 | 1.14 | 1.47 | Aqua Regia Digestion |
Sn, Tin (ppm) | 1.14 | 0.21 | 0.99 | 1.28 | Aqua Regia Digestion |
Sr, Strontium (ppm) | 16.7 | 2.1 | 15.5 | 17.9 | Aqua Regia Digestion |
Ta, Tantalum (ppm) | 0.009 | 0.002 | 0.004 | 0.013 | Aqua Regia Digestion |
Tb, Terbium (ppm) | 0.34 | 0.017 | 0.30 | 0.38 | Aqua Regia Digestion |
Te, Tellurium (ppm) | 0.11 | 0.02 | 0.09 | 0.14 | Aqua Regia Digestion |
Th, Thorium (ppm) | 6.54 | 0.358 | 6.19 | 6.89 | Aqua Regia Digestion |
Ti, Titanium (wt.%) | 0.029 | 0.006 | 0.025 | 0.032 | Aqua Regia Digestion |
Tl, Thallium (ppm) | 5.28 | 0.250 | 5.03 | 5.54 | Aqua Regia Digestion |
U, Uranium (ppm) | 2.52 | 0.251 | 2.36 | 2.67 | Aqua Regia Digestion |
V, Vanadium (ppm) | 8.42 | 0.810 | 7.54 | 9.30 | Aqua Regia Digestion |
W, Tungsten (ppm) | 4.29 | 0.357 | 4.04 | 4.55 | Aqua Regia Digestion |
Y, Yttrium (ppm) | 6.27 | 0.570 | 5.92 | 6.63 | Aqua Regia Digestion |
Yb, Ytterbium (ppm) | 0.44 | 0.05 | 0.36 | 0.52 | Aqua Regia Digestion |
Zn, Zinc (wt.%) | 10.07 | 0.444 | 9.82 | 10.32 | Aqua Regia Digestion |
Zr, Zirconium (ppm) | 37.0 | 5.6 | 33.9 | 40.1 | Aqua Regia Digestion |
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