| Additional Information: Certified Reference Material OREAS 30a was prepared from unweathered, olivine tholeiitic basalt from the Quaternary Newer Volcanics Province in Victoria, Australia. It is characterised by very low background gold of less than 2 parts per billion. Download Certificate OREAS30a Download DataPack OREAS30a | Analyte | Certified Value | 1SD | 95% CI Low | 95% CI High | Method |
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| Au, Gold (ppb) | 2 | IND | IND | IND | Pb Fire Assay | | Pd, Palladium (ppb) | 2 | IND | IND | IND | Pb Fire Assay | | Pt, Platinum (ppb) | 5 | IND | IND | IND | Pb Fire Assay | | Al2O3, Aluminium(III) oxide (wt.%) | 15.17 | 0.121 | 15.09 | 15.25 | Borate Fusion XRF | | BaO, Barium oxide (ppm) | 660 | 76 | 607 | 712 | Borate Fusion XRF | | CaO, Calcium oxide (wt.%) | 8.23 | 0.068 | 8.19 | 8.27 | Borate Fusion XRF | | Cr2O3, Chromium(III) oxide (ppm) | 283 | 43 | 264 | 302 | Borate Fusion XRF | | Fe2O3, Iron(III) oxide (wt.%) | 11.78 | 0.073 | 11.74 | 11.83 | Borate Fusion XRF | | K2O, Potassium oxide (wt.%) | 2.04 | 0.016 | 2.03 | 2.05 | Borate Fusion XRF | | MgO, Magnesium oxide (wt.%) | 7.88 | 0.094 | 7.82 | 7.94 | Borate Fusion XRF | | MnO, Manganese oxide (wt.%) | 0.158 | 0.005 | 0.155 | 0.161 | Borate Fusion XRF | | Na2O, Sodium oxide (wt.%) | 3.15 | 0.05 | 3.12 | 3.18 | Borate Fusion XRF | | P2O5, Phosphorus(V) oxide (wt.%) | 0.591 | 0.01 | 0.585 | 0.597 | Borate Fusion XRF | | SiO2, Silicon dioxide (wt.%) | 46.97 | 0.168 | 46.89 | 47.06 | Borate Fusion XRF | | SO3, Sulphur trioxide (wt.%) | 0.103 | 0.012 | 0.095 | 0.112 | Borate Fusion XRF | | SrO, Strontium oxide (ppm) | 894 | 64 | 827 | 961 | Borate Fusion XRF | | TiO2, Titanium dioxide (wt.%) | 2.09 | 0.018 | 2.08 | 2.1 | Borate Fusion XRF | | LOI1000, Loss On Ignition @1000°C (wt.%) | 1.68 | 0.122 | 1.61 | 1.76 | Thermogravimetry | | S, Sulphur (wt.%) | 0.04 | 0.007 | 0.036 | 0.044 | Infrared Combustion | | Al, Aluminium (wt.%) | 7.88 | 0.127 | 7.77 | 7.99 | Borate / Peroxide Fusion ICP | | Ba, Barium (ppm) | 522 | 24 | 507 | 537 | Borate / Peroxide Fusion ICP | | Be, Beryllium (ppm) | 2.16 | 0.3 | 2.01 | 2.3 | Borate / Peroxide Fusion ICP | | Ca, Calcium (wt.%) | 5.71 | 0.267 | 5.53 | 5.9 | Borate / Peroxide Fusion ICP | | Ce, Cerium (ppm) | 58 | 3.2 | 56 | 60 | Borate / Peroxide Fusion ICP | | Co, Cobalt (ppm) | 44.9 | 2.87 | 43.1 | 46.6 | Borate / Peroxide Fusion ICP | | Cr, Chromium (ppm) | 198 | 21 | 185 | 212 | Borate / Peroxide Fusion ICP | | Cs, Caesium (ppm) | 1.12 | 0.13 | 1.1 | 1.15 | Borate / Peroxide Fusion ICP | | Cu, Copper (ppm) | 43.6 | 4.19 | 39.4 | 47.7 | Borate / Peroxide Fusion ICP | | Dy, Dysprosium (ppm) | 4.19 | 0.163 | 4.1 | 4.27 | Borate / Peroxide Fusion ICP | | Er, Erbium (ppm) | 1.93 | 0.158 | 1.81 | 2.05 | Borate / Peroxide Fusion ICP | | Eu, Europium (ppm) | 1.76 | 0.105 | 1.7 | 1.82 | Borate / Peroxide Fusion ICP | | Fe, Iron (wt.%) | 8.12 | 0.272 | 7.92 | 8.32 | Borate / Peroxide Fusion ICP | | Ga, Gallium (ppm) | 21.7 | 1.28 | 21 | 22.4 | Borate / Peroxide Fusion ICP | | Gd, Gadolinium (ppm) | 5.22 | 0.194 | 5.12 | 5.32 | Borate / Peroxide Fusion ICP | | Hf, Hafnium (ppm) | 4.77 | 0.383 | 4.47 | 5.07 | Borate / Peroxide Fusion ICP | | Ho, Holmium (ppm) | 0.73 | 0.06 | 0.7 | 0.77 | Borate / Peroxide Fusion ICP | | K, Potassium (wt.%) | 1.68 | 0.075 | 1.64 | 1.73 | Borate / Peroxide Fusion ICP | | La, Lanthanum (ppm) | 28.9 | 1.83 | 27.7 | 30.2 | Borate / Peroxide Fusion ICP | | Li, Lithium (ppm) | 12.4 | 2.5 | 9 | 15.9 | Borate / Peroxide Fusion ICP | | Lu, Lutetium (ppm) | 0.22 | 0.015 | 0.21 | 0.22 | Borate / Peroxide Fusion ICP | | Mg, Magnesium (wt.%) | 4.69 | 0.091 | 4.62 | 4.76 | Borate / Peroxide Fusion ICP | | Mn, Manganese (wt.%) | 0.117 | 0.003 | 0.116 | 0.119 | Borate / Peroxide Fusion ICP | | Mo, Molybdenum (ppm) | 4.61 | 0.73 | 4.11 | 5.11 | Borate / Peroxide Fusion ICP | | Nb, Niobium (ppm) | 45.4 | 1.76 | 44.1 | 46.7 | Borate / Peroxide Fusion ICP | | Nd, Neodymium (ppm) | 27.4 | 1.55 | 26.4 | 28.3 | Borate / Peroxide Fusion ICP | | Ni, Nickel (ppm) | 145 | 6 | 141 | 148 | Borate / Peroxide Fusion ICP | | P, Phosphorus (wt.%) | 0.257 | 0.008 | 0.247 | 0.268 | Borate / Peroxide Fusion ICP | | Pr, Praseodymium (ppm) | 7.05 | 0.565 | 6.65 | 7.45 | Borate / Peroxide Fusion ICP | | Rb, Rubidium (ppm) | 36.8 | 2.09 | 35.6 | 37.9 | Borate / Peroxide Fusion ICP | | Sc, Scandium (ppm) | 19.7 | 1.82 | 17.9 | 21.6 | Borate / Peroxide Fusion ICP | | Si, Silicon (wt.%) | 21.87 | 0.438 | 21.6 | 22.13 | Borate / Peroxide Fusion ICP | | Sm, Samarium (ppm) | 5.68 | 0.412 | 5.42 | 5.95 | Borate / Peroxide Fusion ICP | | Sr, Strontium (ppm) | 741 | 24 | 723 | 758 | Borate / Peroxide Fusion ICP | | Ta, Tantalum (ppm) | 2.8 | 0.236 | 2.64 | 2.96 | Borate / Peroxide Fusion ICP | | Tb, Terbium (ppm) | 0.75 | 0.06 | 0.71 | 0.79 | Borate / Peroxide Fusion ICP | | Th, Thorium (ppm) | 3.71 | 0.306 | 3.52 | 3.91 | Borate / Peroxide Fusion ICP | | Ti, Titanium (wt.%) | 1.22 | 0.027 | 1.2 | 1.24 | Borate / Peroxide Fusion ICP | | Tm, Thulium (ppm) | 0.26 | 0.04 | 0.23 | 0.28 | Borate / Peroxide Fusion ICP | | U, Uranium (ppm) | 1.37 | 0.14 | 1.29 | 1.45 | Borate / Peroxide Fusion ICP | | V, Vanadium (ppm) | 208 | 13 | 199 | 216 | Borate / Peroxide Fusion ICP | | Y, Yttrium (ppm) | 19.4 | 1.1 | 18.8 | 20.1 | Borate / Peroxide Fusion ICP | | Yb, Ytterbium (ppm) | 1.53 | 0.126 | 1.47 | 1.59 | Borate / Peroxide Fusion ICP | | Zn, Zinc (ppm) | 107 | 10 | 97 | 117 | Borate / Peroxide Fusion ICP | | Zr, Zirconium (ppm) | 200 | 10 | 189 | 211 | Borate / Peroxide Fusion ICP | | Ag, Silver (ppm) | 0.1 | IND | IND | IND | 4-Acid Digestion | | Al, Aluminium (wt.%) | 7.9 | 0.331 | 7.71 | 8.09 | 4-Acid Digestion | | As, Arsenic (ppm) | 1.55 | 0.25 | 1.47 | 1.64 | 4-Acid Digestion | | Ba, Barium (ppm) | 537 | 17 | 528 | 545 | 4-Acid Digestion | | Be, Beryllium (ppm) | 2.18 | 0.159 | 2.09 | 2.27 | 4-Acid Digestion | | Bi, Bismuth (ppm) | 0.032 | 0.008 | 0.025 | 0.038 | 4-Acid Digestion | | Ca, Calcium (wt.%) | 5.67 | 0.273 | 5.51 | 5.82 | 4-Acid Digestion | | Cd, Cadmium (ppm) | 0.14 | 0.02 | 0.13 | 0.15 | 4-Acid Digestion | | Ce, Cerium (ppm) | 58 | 3.9 | 56 | 60 | 4-Acid Digestion | | Co, Cobalt (ppm) | 45.1 | 1.96 | 44.1 | 46 | 4-Acid Digestion | | Cr, Chromium (ppm) | 156 | 19 | 145 | 166 | 4-Acid Digestion | | Cs, Caesium (ppm) | 1.17 | 0.053 | 1.14 | 1.2 | 4-Acid Digestion | | Cu, Copper (ppm) | 44.4 | 1.41 | 43.7 | 45.1 | 4-Acid Digestion | | Dy, Dysprosium (ppm) | 4.36 | 0.243 | 4.1 | 4.63 | 4-Acid Digestion | | Er, Erbium (ppm) | 2.04 | 0.111 | 1.94 | 2.15 | 4-Acid Digestion | | Eu, Europium (ppm) | 1.82 | 0.151 | 1.67 | 1.98 | 4-Acid Digestion | | Fe, Iron (wt.%) | 8.06 | 0.323 | 7.87 | 8.26 | 4-Acid Digestion | | Ga, Gallium (ppm) | 22.3 | 0.9 | 21.9 | 22.8 | 4-Acid Digestion | | Gd, Gadolinium (ppm) | 5.41 | 0.37 | 5.05 | 5.77 | 4-Acid Digestion | | Ge, Germanium (ppm) | 0.13 | 0.02 | 0.11 | 0.14 | 4-Acid Digestion | | Hf, Hafnium (ppm) | 4.81 | 0.249 | 4.69 | 4.94 | 4-Acid Digestion | | Ho, Holmium (ppm) | 0.78 | 0.038 | 0.74 | 0.83 | 4-Acid Digestion | | In, Indium (ppm) | 0.072 | 0.01 | 0.069 | 0.075 | 4-Acid Digestion | | K, Potassium (wt.%) | 1.71 | 0.084 | 1.66 | 1.76 | 4-Acid Digestion | | La, Lanthanum (ppm) | 28.3 | 1.95 | 27.2 | 29.5 | 4-Acid Digestion | | Li, Lithium (ppm) | 10.9 | 0.7 | 10.4 | 11.4 | 4-Acid Digestion | | Lu, Lutetium (ppm) | 0.23 | 0.018 | 0.21 | 0.24 | 4-Acid Digestion | | Mg, Magnesium (wt.%) | 4.58 | 0.186 | 4.47 | 4.68 | 4-Acid Digestion | | Mn, Manganese (wt.%) | 0.116 | 0.004 | 0.113 | 0.118 | 4-Acid Digestion | | Mo, Molybdenum (ppm) | 4.27 | 0.224 | 4.13 | 4.4 | 4-Acid Digestion | | Na, Sodium (wt.%) | 2.38 | 0.101 | 2.32 | 2.43 | 4-Acid Digestion | | Nb, Niobium (ppm) | 45.5 | 2.12 | 44.4 | 46.7 | 4-Acid Digestion | | Nd, Neodymium (ppm) | 27.5 | 0.74 | 26.8 | 28.3 | 4-Acid Digestion | | Ni, Nickel (ppm) | 140 | 6 | 137 | 144 | 4-Acid Digestion | | P, Phosphorus (wt.%) | 0.255 | 0.008 | 0.251 | 0.258 | 4-Acid Digestion | | Pb, Lead (ppm) | 3.75 | 0.223 | 3.61 | 3.88 | 4-Acid Digestion | | Pr, Praseodymium (ppm) | 6.96 | 0.238 | 6.67 | 7.25 | 4-Acid Digestion | | Rb, Rubidium (ppm) | 37.1 | 2.03 | 35.8 | 38.3 | 4-Acid Digestion | | S, Sulphur (wt.%) | 0.044 | 0.004 | 0.041 | 0.046 | 4-Acid Digestion | | Sc, Scandium (ppm) | 20 | 1.43 | 19.2 | 20.7 | 4-Acid Digestion | | Sm, Samarium (ppm) | 5.96 | 0.318 | 5.66 | 6.26 | 4-Acid Digestion | | Sn, Tin (ppm) | 1.88 | 0.144 | 1.81 | 1.96 | 4-Acid Digestion | | Sr, Strontium (ppm) | 776 | 42 | 753 | 799 | 4-Acid Digestion | | Ta, Tantalum (ppm) | 2.97 | 0.189 | 2.87 | 3.08 | 4-Acid Digestion | | Tb, Terbium (ppm) | 0.78 | 0.052 | 0.75 | 0.82 | 4-Acid Digestion | | Th, Thorium (ppm) | 3.78 | 0.245 | 3.64 | 3.92 | 4-Acid Digestion | | Ti, Titanium (wt.%) | 1.22 | 0.05 | 1.2 | 1.25 | 4-Acid Digestion | | Tl, Thallium (ppm) | 0.13 | 0.011 | 0.12 | 0.13 | 4-Acid Digestion | | Tm, Thulium (ppm) | 0.27 | 0.03 | 0.25 | 0.29 | 4-Acid Digestion | | U, Uranium (ppm) | 1.34 | 0.071 | 1.31 | 1.38 | 4-Acid Digestion | | V, Vanadium (ppm) | 201 | 6 | 198 | 204 | 4-Acid Digestion | | W, Tungsten (ppm) | 0.21 | 0.04 | 0.19 | 0.23 | 4-Acid Digestion | | Y, Yttrium (ppm) | 19.5 | 0.95 | 19 | 20 | 4-Acid Digestion | | Yb, Ytterbium (ppm) | 1.55 | 0.067 | 1.5 | 1.61 | 4-Acid Digestion | | Zn, Zinc (ppm) | 109 | 4 | 107 | 111 | 4-Acid Digestion | | Zr, Zirconium (ppm) | 204 | 5 | 201 | 207 | 4-Acid Digestion | | Ag, Silver (ppm) | 0.028 | 0.005 | 0.025 | 0.03 | Aqua Regia Digestion | | Al, Aluminium (wt.%) | 3.3 | 0.21 | 3.17 | 3.43 | Aqua Regia Digestion | | As, Arsenic (ppm) | 1.22 | 0.13 | 1.12 | 1.31 | Aqua Regia Digestion | | Au, Gold (ppm) | 0.02 | IND | IND | IND | Aqua Regia Digestion | | Ba, Barium (ppm) | 57 | 4.4 | 54 | 59 | Aqua Regia Digestion | | Be, Beryllium (ppm) | 1.7 | 0.16 | 1.6 | 1.8 | Aqua Regia Digestion | | Bi, Bismuth (ppm) | 0.024 | 0.006 | 0.021 | 0.027 | Aqua Regia Digestion | | Ca, Calcium (wt.%) | 1.68 | 0.153 | 1.59 | 1.77 | Aqua Regia Digestion | | Cd, Cadmium (ppm) | 0.1 | 0.01 | 0.09 | 0.11 | Aqua Regia Digestion | | Ce, Cerium (ppm) | 47.4 | 1.51 | 46.6 | 48.2 | Aqua Regia Digestion | | Co, Cobalt (ppm) | 38.5 | 2.04 | 37.4 | 39.6 | Aqua Regia Digestion | | Cr, Chromium (ppm) | 67 | 5.6 | 64 | 71 | Aqua Regia Digestion | | Cs, Caesium (ppm) | 0.93 | 0.074 | 0.89 | 0.98 | Aqua Regia Digestion | | Cu, Copper (ppm) | 42.9 | 1.78 | 41.9 | 43.9 | Aqua Regia Digestion | | Fe, Iron (wt.%) | 6.64 | 0.322 | 6.45 | 6.83 | Aqua Regia Digestion | | Ga, Gallium (ppm) | 11 | 1.1 | 10.2 | 11.7 | Aqua Regia Digestion | | Ge, Germanium (ppm) | 0.16 | 0.04 | 0.1 | 0.21 | Aqua Regia Digestion | | In, Indium (ppm) | 0.02 | 0.001 | 0.02 | 0.021 | Aqua Regia Digestion | | K, Potassium (wt.%) | 0.413 | 0.02 | 0.402 | 0.424 | Aqua Regia Digestion | | La, Lanthanum (ppm) | 24 | 1.75 | 23.1 | 25 | Aqua Regia Digestion | | Li, Lithium (ppm) | 9.92 | 0.764 | 9.34 | 10.49 | Aqua Regia Digestion | | Lu, Lutetium (ppm) | 0.11 | 0.009 | 0.1 | 0.12 | Aqua Regia Digestion | | Mg, Magnesium (wt.%) | 3.24 | 0.134 | 3.16 | 3.32 | Aqua Regia Digestion | | Mn, Manganese (wt.%) | 0.088 | 0.004 | 0.086 | 0.091 | Aqua Regia Digestion | | Mo, Molybdenum (ppm) | 3.95 | 0.46 | 3.67 | 4.24 | Aqua Regia Digestion | | Na, Sodium (wt.%) | 0.97 | 0.045 | 0.943 | 0.997 | Aqua Regia Digestion | | Ni, Nickel (ppm) | 125 | 10 | 119 | 130 | Aqua Regia Digestion | | P, Phosphorus (wt.%) | 0.234 | 0.015 | 0.226 | 0.243 | Aqua Regia Digestion | | Pb, Lead (ppm) | 2.28 | 0.139 | 2.19 | 2.38 | Aqua Regia Digestion | | Rb, Rubidium (ppm) | 19.4 | 1.37 | 18.6 | 20.2 | Aqua Regia Digestion | | S, Sulphur (wt.%) | 0.041 | 0.004 | 0.038 | 0.043 | Aqua Regia Digestion | | Sc, Scandium (ppm) | 2.71 | 0.5 | 2.35 | 3.08 | Aqua Regia Digestion | | Sn, Tin (ppm) | 1.39 | 0.108 | 1.33 | 1.46 | Aqua Regia Digestion | | Sr, Strontium (ppm) | 279 | 23 | 265 | 292 | Aqua Regia Digestion | | Ta, Tantalum (ppm) | 0.082 | 0.02 | 0.066 | 0.098 | Aqua Regia Digestion | | Tb, Terbium (ppm) | 0.47 | 0.024 | 0.44 | 0.5 | Aqua Regia Digestion | | Th, Thorium (ppm) | 2.92 | 0.133 | 2.84 | 3 | Aqua Regia Digestion | | Ti, Titanium (wt.%) | 0.833 | 0.053 | 0.795 | 0.871 | Aqua Regia Digestion | | Tl, Thallium (ppm) | 0.096 | 0.007 | 0.093 | 0.099 | Aqua Regia Digestion | | U, Uranium (ppm) | 0.86 | 0.048 | 0.83 | 0.89 | Aqua Regia Digestion | | V, Vanadium (ppm) | 116 | 9 | 110 | 122 | Aqua Regia Digestion | | W, Tungsten (ppm) | 0.068 | 0.01 | 0.059 | 0.076 | Aqua Regia Digestion | | Y, Yttrium (ppm) | 12.3 | 0.64 | 11.9 | 12.7 | Aqua Regia Digestion | | Yb, Ytterbium (ppm) | 0.76 | 0.07 | 0.68 | 0.85 | Aqua Regia Digestion | | Zn, Zinc (ppm) | 97 | 6.2 | 93 | 101 | Aqua Regia Digestion | | Zr, Zirconium (ppm) | 27.7 | 5.7 | 23.3 | 32 | Aqua Regia Digestion |
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