| Description: OREAS 630b is a zinc tailings certified reference material (CRM) sourced from the Rosebery metallurgical plant owned and operated by MMG Ltd. The Rosebery mine and plant are 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.
Twenty commercial analytical laboratories participated in the program to certify the elements reported in Table 1. The following methods were employed: - Au by 30-50g fire assay with ICP-OES finish (10 laboratories) and AAS finish (9 laboratories);
- Majors & base metals by oxidising fusion with X-ray fluorescence finish (11 laboratories);
- Full elemental suite by peroxide fusion with ICP-OES and ICP-MS finish (up to 17 laboratories depending on the element);
- Four acid digestion for full elemental suites with ICP-OES and ICP-MS (up to 18 laboratories depending on the element);
- Aqua regia digestion for full elemental suites with AAS and/or ICP-OES and ICP-MS (up to 18 laboratories depending on the element);
- Total Sulphur by infra-red combustion furnace or C/S analyser.
Download Certificate OREAS630b Download DataPack OREAS630b | Analyte | Certified Value | 1SD | 95% CI Low | 95% CI High | Method |
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| Ag, Silver (ppm) | 19 | 0.53 | 18.8 | 19.3 | 4-Acid Digestion | | Al, Aluminium (wt.%) | 5.08 | 0.182 | 4.99 | 5.16 | 4-Acid Digestion | | As, Arsenic (ppm) | 413 | 18 | 403 | 422 | 4-Acid Digestion | | Be, Beryllium (ppm) | 1.28 | 0.098 | 1.25 | 1.31 | 4-Acid Digestion | | Bi, Bismuth (ppm) | 4.14 | 0.176 | 4.03 | 4.25 | 4-Acid Digestion | | Ca, Calcium (wt.%) | 1.56 | 0.024 | 1.55 | 1.57 | 4-Acid Digestion | | Cd, Cadmium (ppm) | 27 | 1.21 | 26.4 | 27.6 | 4-Acid Digestion | | Ce, Cerium (ppm) | 48.5 | 15 | 39.6 | 57.4 | 4-Acid Digestion | | Co, Cobalt (ppm) | 7.42 | 0.59 | 7.06 | 7.77 | 4-Acid Digestion | | Cr, Chromium (ppm) | 11.5 | 2.4 | 10.2 | 12.8 | 4-Acid Digestion | | Cs, Caesium (ppm) | 5.03 | 0.115 | 4.99 | 5.07 | 4-Acid Digestion | | Cu, Copper (ppm) | 521 | 11 | 516 | 526 | 4-Acid Digestion | | Dy, Dysprosium (ppm) | 3.92 | 0.202 | 3.77 | 4.06 | 4-Acid Digestion | | Er, Erbium (ppm) | 2.22 | 0.154 | 2.09 | 2.35 | 4-Acid Digestion | | Eu, Europium (ppm) | 2.31 | 0.28 | 2.05 | 2.57 | 4-Acid Digestion | | Fe, Iron (wt.%) | 6.12 | 0.226 | 6.01 | 6.24 | 4-Acid Digestion | | Ga, Gallium (ppm) | 15.9 | 2.7 | 14.5 | 17.4 | 4-Acid Digestion | | Gd, Gadolinium (ppm) | 5.36 | 0.447 | 4.99 | 5.72 | 4-Acid Digestion | | Hf, Hafnium (ppm) | 3.2 | 0.131 | 3.14 | 3.26 | 4-Acid Digestion | | Ho, Holmium (ppm) | 0.76 | 0.037 | 0.73 | 0.79 | 4-Acid Digestion | | In, Indium (ppm) | 0.35 | 0.019 | 0.35 | 0.36 | 4-Acid Digestion | | K, Potassium (wt.%) | 1.79 | 0.053 | 1.76 | 1.81 | 4-Acid Digestion | | La, Lanthanum (ppm) | 17.1 | 7 | 13.1 | 21 | 4-Acid Digestion | | Li, Lithium (ppm) | 20.2 | 0.7 | 19.9 | 20.6 | 4-Acid Digestion | | Lu, Lutetium (ppm) | 0.32 | 0.021 | 0.3 | 0.34 | 4-Acid Digestion | | Mg, Magnesium (wt.%) | 0.837 | 0.019 | 0.827 | 0.847 | 4-Acid Digestion | | Mn, Manganese (wt.%) | 3.39 | 0.122 | 3.33 | 3.46 | 4-Acid Digestion | | Mo, Molybdenum (ppm) | 12.7 | 0.66 | 12.4 | 13.1 | 4-Acid Digestion | | Na, Sodium (wt.%) | 0.721 | 0.029 | 0.706 | 0.737 | 4-Acid Digestion | | Nb, Niobium (ppm) | 8.1 | 0.8 | 7.64 | 8.57 | 4-Acid Digestion | | Nd, Neodymium (ppm) | 30.1 | 3.3 | 27.2 | 33 | 4-Acid Digestion | | Ni, Nickel (ppm) | 35.1 | 1.17 | 34.5 | 35.7 | 4-Acid Digestion | | P, Phosphorus (wt.%) | 0.045 | 0.003 | 0.044 | 0.047 | 4-Acid Digestion | | Pb, Lead (wt.%) | 0.411 | 0.018 | 0.402 | 0.421 | 4-Acid Digestion | | Pr, Praseodymium (ppm) | 7.27 | 0.94 | 6.45 | 8.09 | 4-Acid Digestion | | Rb, Rubidium (ppm) | 102 | 5 | 99 | 104 | 4-Acid Digestion | | Re, Rhenium (ppm) | 0.002 | IND | IND | IND | 4-Acid Digestion | | S, Sulphur (wt.%) | 5.17 | 0.146 | 5.08 | 5.25 | 4-Acid Digestion | | Sb, Antimony (ppm) | 47.9 | 3.84 | 45.9 | 50 | 4-Acid Digestion | | Sc, Scandium (ppm) | 6.29 | 0.33 | 6.12 | 6.47 | 4-Acid Digestion | | Sm, Samarium (ppm) | 6.2 | 0.76 | 5.6 | 6.79 | 4-Acid Digestion | | Sn, Tin (ppm) | 2.22 | 0.077 | 2.2 | 2.24 | 4-Acid Digestion | | Sr, Strontium (ppm) | 385 | 110 | 325 | 444 | 4-Acid Digestion | | Ta, Tantalum (ppm) | 0.58 | 0.054 | 0.54 | 0.61 | 4-Acid Digestion | | Tb, Terbium (ppm) | 0.71 | 0.04 | 0.68 | 0.75 | 4-Acid Digestion | | Te, Tellurium (ppm) | 0.05 | IND | IND | IND | 4-Acid Digestion | | Th, Thorium (ppm) | 7.49 | 1.7 | 6.56 | 8.42 | 4-Acid Digestion | | Ti, Titanium (wt.%) | 0.2 | 0.017 | 0.191 | 0.209 | 4-Acid Digestion | | Tl, Thallium (ppm) | 25.1 | 1.46 | 24.4 | 25.8 | 4-Acid Digestion | | Tm, Thulium (ppm) | 0.32 | 0.018 | 0.3 | 0.34 | 4-Acid Digestion | | U, Uranium (ppm) | 5.87 | 0.306 | 5.72 | 6.02 | 4-Acid Digestion | | V, Vanadium (ppm) | 27.3 | 2.58 | 26 | 28.6 | 4-Acid Digestion | | W, Tungsten (ppm) | 19.7 | 1.54 | 18.9 | 20.4 | 4-Acid Digestion | | Y, Yttrium (ppm) | 18.4 | 0.93 | 17.9 | 18.9 | 4-Acid Digestion | | Yb, Ytterbium (ppm) | 2.13 | 0.189 | 1.99 | 2.26 | 4-Acid Digestion | | Zn, Zinc (wt.%) | 1.11 | 0.025 | 1.1 | 1.12 | 4-Acid Digestion | | Zr, Zirconium (ppm) | 113 | 9 | 108 | 117 | 4-Acid Digestion | | Ag, Silver (ppm) | 19.1 | 0.72 | 18.6 | 19.5 | Aqua Regia Digestion | | Al, Aluminium (wt.%) | 1.09 | 0.077 | 1.04 | 1.13 | Aqua Regia Digestion | | As, Arsenic (ppm) | 413 | 17 | 405 | 422 | Aqua Regia Digestion | | Au, Gold (ppm) | 0.345 | 0.011 | 0.339 | 0.35 | Aqua Regia Digestion | | B, Boron (ppm) | 10 | IND | IND | IND | Aqua Regia Digestion | | Be, Beryllium (ppm) | 0.27 | 0.04 | 0.24 | 0.3 | Aqua Regia Digestion | | Bi, Bismuth (ppm) | 4.13 | 0.237 | 3.99 | 4.27 | Aqua Regia Digestion | | Ca, Calcium (wt.%) | 1.46 | 0.054 | 1.43 | 1.49 | Aqua Regia Digestion | | Cd, Cadmium (ppm) | 27.1 | 1.81 | 26.2 | 28.1 | Aqua Regia Digestion | | Ce, Cerium (ppm) | 33.4 | 12 | 26.2 | 40.5 | Aqua Regia Digestion | | Co, Cobalt (ppm) | 7.2 | 0.377 | 6.99 | 7.41 | Aqua Regia Digestion | | Cr, Chromium (ppm) | 9.77 | 0.85 | 9.27 | 10.27 | Aqua Regia Digestion | | Cs, Caesium (ppm) | 2.86 | 0.238 | 2.71 | 3.01 | Aqua Regia Digestion | | Cu, Copper (ppm) | 523 | 20 | 513 | 533 | Aqua Regia Digestion | | Fe, Iron (wt.%) | 5.79 | 0.192 | 5.7 | 5.89 | Aqua Regia Digestion | | Ga, Gallium (ppm) | 3.98 | 0.369 | 3.73 | 4.24 | Aqua Regia Digestion | | Hf, Hafnium (ppm) | 0.62 | 0.1 | 0.55 | 0.69 | Aqua Regia Digestion | | Hg, Mercury (ppm) | 1.21 | 0.067 | 1.17 | 1.25 | Aqua Regia Digestion | | In, Indium (ppm) | 0.33 | 0.018 | 0.32 | 0.34 | Aqua Regia Digestion | | K, Potassium (wt.%) | 0.297 | 0.031 | 0.28 | 0.313 | Aqua Regia Digestion | | La, Lanthanum (ppm) | 10.3 | 4.5 | 7.8 | 12.8 | Aqua Regia Digestion | | Li, Lithium (ppm) | 7.71 | 0.82 | 7.24 | 8.19 | Aqua Regia Digestion | | Mg, Magnesium (wt.%) | 0.609 | 0.026 | 0.596 | 0.623 | Aqua Regia Digestion | | Mn, Manganese (wt.%) | 3.18 | 0.143 | 3.09 | 3.27 | Aqua Regia Digestion | | Mo, Molybdenum (ppm) | 12.4 | 0.47 | 12.1 | 12.6 | Aqua Regia Digestion | | Na, Sodium (wt.%) | 0.048 | 0.007 | 0.044 | 0.052 | Aqua Regia Digestion | | Nb, Niobium (ppm) | 1.08 | 0.19 | 0.92 | 1.25 | Aqua Regia Digestion | | Ni, Nickel (ppm) | 34.8 | 1.53 | 34.1 | 35.5 | Aqua Regia Digestion | | P, Phosphorus (wt.%) | 0.044 | 0.002 | 0.043 | 0.045 | Aqua Regia Digestion | | Pb, Lead (wt.%) | 0.408 | 0.021 | 0.397 | 0.419 | Aqua Regia Digestion | | Rb, Rubidium (ppm) | 21.9 | 1.89 | 20.8 | 23.1 | Aqua Regia Digestion | | S, Sulphur (wt.%) | 5.19 | 0.168 | 5.1 | 5.29 | Aqua Regia Digestion | | Sb, Antimony (ppm) | 40.7 | 4.6 | 38.1 | 43.2 | Aqua Regia Digestion | | Sc, Scandium (ppm) | 1.68 | 0.129 | 1.61 | 1.76 | Aqua Regia Digestion | | Sn, Tin (ppm) | 0.65 | 0.09 | 0.59 | 0.71 | Aqua Regia Digestion | | Tb, Terbium (ppm) | 0.43 | 0.07 | 0.33 | 0.52 | Aqua Regia Digestion | | Th, Thorium (ppm) | 3.23 | 0.82 | 2.62 | 3.84 | Aqua Regia Digestion | | Ti, Titanium (wt.%) | 0.069 | 0.012 | 0.062 | 0.075 | Aqua Regia Digestion | | Tl, Thallium (ppm) | 8.47 | 0.711 | 8.04 | 8.9 | Aqua Regia Digestion | | U, Uranium (ppm) | 3.34 | 0.279 | 3.19 | 3.49 | Aqua Regia Digestion | | V, Vanadium (ppm) | 6.41 | 0.89 | 5.9 | 6.92 | Aqua Regia Digestion | | W, Tungsten (ppm) | 12.3 | 0.69 | 11.9 | 12.7 | Aqua Regia Digestion | | Y, Yttrium (ppm) | 10.1 | 0.6 | 9.8 | 10.5 | Aqua Regia Digestion | | Yb, Ytterbium (ppm) | 0.76 | 0.1 | 0.65 | 0.87 | Aqua Regia Digestion | | Zn, Zinc (wt.%) | 1.1 | 0.033 | 1.08 | 1.11 | Aqua Regia Digestion | | Zr, Zirconium (ppm) | 23.1 | 2.5 | 21.7 | 24.5 | Aqua Regia Digestion | | Al, Aluminium (wt.%) | 5.11 | 0.12 | 5.05 | 5.18 | Borate / Peroxide Fusion ICP | | As, Arsenic (ppm) | 410 | 21 | 395 | 426 | Borate / Peroxide Fusion ICP | | Be, Beryllium (ppm) | 5 | IND | IND | IND | Borate / Peroxide Fusion ICP | | Bi, Bismuth (ppm) | 3.93 | 0.196 | 3.71 | 4.15 | Borate / Peroxide Fusion ICP | | Ca, Calcium (wt.%) | 1.59 | 0.077 | 1.55 | 1.63 | Borate / Peroxide Fusion ICP | | Cd, Cadmium (ppm) | 28.8 | 1.8 | 26.9 | 30.7 | Borate / Peroxide Fusion ICP | | Cu, Copper (ppm) | 518 | 19 | 508 | 527 | Borate / Peroxide Fusion ICP | | Fe, Iron (wt.%) | 6.13 | 0.141 | 6.07 | 6.2 | Borate / Peroxide Fusion ICP | | In, Indium (ppm) | 0.5 | IND | IND | IND | Borate / Peroxide Fusion ICP | | K, Potassium (wt.%) | 1.82 | 0.081 | 1.78 | 1.86 | Borate / Peroxide Fusion ICP | | La, Lanthanum (ppm) | 36.9 | 3.9 | 31.8 | 41.9 | Borate / Peroxide Fusion ICP | | Li, Lithium (ppm) | 21.9 | 2.6 | 20.9 | 22.9 | Borate / Peroxide Fusion ICP | | Mg, Magnesium (wt.%) | 0.837 | 0.02 | 0.826 | 0.847 | Borate / Peroxide Fusion ICP | | Mn, Manganese (wt.%) | 3.46 | 0.12 | 3.4 | 3.52 | Borate / Peroxide Fusion ICP | | Mo, Molybdenum (ppm) | 14.5 | 2.2 | 12.4 | 16.5 | Borate / Peroxide Fusion ICP | | Nb, Niobium (ppm) | 8.6 | 1.83 | 6.46 | 10.74 | Borate / Peroxide Fusion ICP | | Ni, Nickel (ppm) | 46.9 | 9.1 | 41.7 | 52.1 | Borate / Peroxide Fusion ICP | | P, Phosphorus (wt.%) | 0.052 | 0.008 | 0.044 | 0.061 | Borate / Peroxide Fusion ICP | | Pb, Lead (wt.%) | 0.432 | 0.012 | 0.427 | 0.438 | Borate / Peroxide Fusion ICP | | Rb, Rubidium (ppm) | 106 | 2 | 104 | 107 | Borate / Peroxide Fusion ICP | | S, Sulphur (wt.%) | 6.16 | 0.629 | 5.78 | 6.54 | Borate / Peroxide Fusion ICP | | Sb, Antimony (ppm) | 50 | 3.6 | 47 | 54 | Borate / Peroxide Fusion ICP | | Si, Silicon (wt.%) | 21.62 | 0.52 | 21.35 | 21.89 | Borate / Peroxide Fusion ICP | | Sr, Strontium (ppm) | 706 | 31 | 684 | 729 | Borate / Peroxide Fusion ICP | | Th, Thorium (ppm) | 10.8 | 1.1 | 9.7 | 11.9 | Borate / Peroxide Fusion ICP | | Ti, Titanium (wt.%) | 0.237 | 0.008 | 0.233 | 0.24 | Borate / Peroxide Fusion ICP | | Tl, Thallium (ppm) | 24.2 | 1.33 | 22.5 | 26 | Borate / Peroxide Fusion ICP | | U, Uranium (ppm) | 5.97 | 0.402 | 5.47 | 6.47 | Borate / Peroxide Fusion ICP | | V, Vanadium (ppm) | 50 | IND | IND | IND | Borate / Peroxide Fusion ICP | | W, Tungsten (ppm) | 25.4 | 6.5 | 19.2 | 31.5 | Borate / Peroxide Fusion ICP | | Y, Yttrium (ppm) | 24.7 | 1.4 | 23.6 | 25.8 | Borate / Peroxide Fusion ICP | | Yb, Ytterbium (ppm) | 2.85 | 0.42 | 2.33 | 3.37 | Borate / Peroxide Fusion ICP | | Zn, Zinc (wt.%) | 1.11 | 0.02 | 1.11 | 1.12 | Borate / Peroxide Fusion ICP | | S, Sulphur (wt.%) | 6.87 | 0.2 | 6.76 | 6.97 | Infrared Combustion | | Al2O3, Aluminium(III) oxide (wt.%) | 9.79 | 0.231 | 9.63 | 9.94 | Oxidising Fusion XRF | | BaO, Barium oxide (wt.%) | 7.57 | 0.114 | 7.49 | 7.65 | Oxidising Fusion XRF | | CaO, Calcium oxide (wt.%) | 2.2 | 0.038 | 2.18 | 2.23 | Oxidising Fusion XRF | | Cr, Chromium (ppm) | 70 | IND | IND | IND | Oxidising Fusion XRF | | Cu, Copper (ppm) | 547 | 45 | 510 | 585 | Oxidising Fusion XRF | | Fe, Iron (wt.%) | 6.24 | 0.132 | 6.15 | 6.34 | Oxidising Fusion XRF | | K2O, Potassium oxide (wt.%) | 2.23 | 0.031 | 2.21 | 2.25 | Oxidising Fusion XRF | | MgO, Magnesium oxide (wt.%) | 1.44 | 0.027 | 1.42 | 1.46 | Oxidising Fusion XRF | | Mn, Manganese (wt.%) | 3.49 | 0.103 | 3.42 | 3.56 | Oxidising Fusion XRF | | Na2O, Sodium oxide (wt.%) | 0.969 | 0.097 | 0.839 | 1.1 | Oxidising Fusion XRF | | P2O5, Phosphorus(V) oxide (wt.%) | 0.104 | 0.007 | 0.1 | 0.108 | Oxidising Fusion XRF | | Pb, Lead (wt.%) | 0.442 | 0.01 | 0.435 | 0.45 | Oxidising Fusion XRF | | S, Sulphur (wt.%) | 6.92 | 0.115 | 6.83 | 7 | Oxidising Fusion XRF | | SiO2, Silicon dioxide (wt.%) | 46.32 | 0.373 | 46.02 | 46.61 | Oxidising Fusion XRF | | Sn, Tin (ppm) | 50 | IND | IND | IND | Oxidising Fusion XRF | | Sr, Strontium (ppm) | 735 | 61 | 684 | 787 | Oxidising Fusion XRF | | TiO2, Titanium dioxide (wt.%) | 0.404 | 0.02 | 0.39 | 0.418 | Oxidising Fusion XRF | | Zn, Zinc (wt.%) | 1.11 | 0.025 | 1.09 | 1.13 | Oxidising Fusion XRF | | Zr, Zirconium (ppm) | 192 | 46 | 152 | 232 | Oxidising Fusion XRF | | Au, Gold (ppm) | 0.358 | 0.013 | 0.353 | 0.364 | Pb Fire Assay | | LOI1000, Loss On Ignition @1000°C (wt.%) | 11.46 | 0.746 | 10.87 | 12.06 | Thermogravimetry |
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