| Description: OREAS 681 is a platinum group element (PGE) ore certified reference material (CRM) prepared and certified by Ore Research & Exploration Pty Ltd. OREAS 681 has been prepared from PGE ores blended with barren gabbro-norite. The PGE ores were sourced from the Merensky Reef and hanging wall of the Merensky Reef of the Bushveld Complex, from sites owned and operated by Anglo American Platinum, South Africa. The common minerals of economic importance within a pegmatitic pyroxenite host are sulphides of iron, nickel, copper and alloys of the PGE's. The barren gabbro-norite was sourced from the Late Cambrian Black Hill Norite Complex located 85km east of Adelaide, Australia. OREAS 681 is one of a suite of five PGE ore CRMs ranging in 4E concentrations (4E = 4 elements; platinum (Pt), palladium (Pd), rhodium (Rh) and gold (Au)) from 0.82 to 6.1ppm. Download Certificate OREAS681 Download DataPack OREAS681 | Analyte | Certified Value | 1SD | 95% CI Low | 95% CI High | Method |
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| Ag, Silver (ppm) | 0.118 | 0.022 | 0.098 | 0.138 | 4-Acid Digestion | | Al, Aluminium (wt.%) | 7.91 | 0.213 | 7.8 | 8.01 | 4-Acid Digestion | | Ba, Barium (ppm) | 442 | 11 | 437 | 446 | 4-Acid Digestion | | Be, Beryllium (ppm) | 1.41 | 0.15 | 1.34 | 1.48 | 4-Acid Digestion | | Bi, Bismuth (ppm) | 0.098 | 0.007 | 0.094 | 0.102 | 4-Acid Digestion | | Ca, Calcium (wt.%) | 5.98 | 0.197 | 5.88 | 6.08 | 4-Acid Digestion | | Ce, Cerium (ppm) | 40.6 | 1.77 | 39.7 | 41.5 | 4-Acid Digestion | | Co, Cobalt (ppm) | 51 | 3.2 | 49 | 52 | 4-Acid Digestion | | Cr, Chromium (ppm) | 1642 | 264 | 1510 | 1773 | 4-Acid Digestion | | Cs, Caesium (ppm) | 4.02 | 0.104 | 3.97 | 4.07 | 4-Acid Digestion | | Cu, Copper (ppm) | 264 | 11 | 259 | 269 | 4-Acid Digestion | | Dy, Dysprosium (ppm) | 3.4 | 0.166 | 3.25 | 3.54 | 4-Acid Digestion | | Er, Erbium (ppm) | 1.97 | 0.066 | 1.92 | 2.01 | 4-Acid Digestion | | Eu, Europium (ppm) | 1.37 | 0.101 | 1.29 | 1.45 | 4-Acid Digestion | | Fe, Iron (wt.%) | 7.47 | 0.28 | 7.34 | 7.61 | 4-Acid Digestion | | Ga, Gallium (ppm) | 17.6 | 0.43 | 17.3 | 17.8 | 4-Acid Digestion | | Gd, Gadolinium (ppm) | 4.06 | 0.27 | 3.85 | 4.28 | 4-Acid Digestion | | Hf, Hafnium (ppm) | 1.7 | 0.19 | 1.6 | 1.81 | 4-Acid Digestion | | Ho, Holmium (ppm) | 0.69 | 0.017 | 0.68 | 0.71 | 4-Acid Digestion | | In, Indium (ppm) | 0.042 | 0.004 | 0.04 | 0.044 | 4-Acid Digestion | | K, Potassium (wt.%) | 1.35 | 0.064 | 1.32 | 1.38 | 4-Acid Digestion | | La, Lanthanum (ppm) | 18.8 | 1.01 | 18.4 | 19.3 | 4-Acid Digestion | | Li, Lithium (ppm) | 13 | 0.46 | 12.8 | 13.2 | 4-Acid Digestion | | Lu, Lutetium (ppm) | 0.27 | 0.012 | 0.26 | 0.28 | 4-Acid Digestion | | Mg, Magnesium (wt.%) | 5.19 | 0.174 | 5.11 | 5.27 | 4-Acid Digestion | | Mn, Manganese (wt.%) | 0.131 | 0.006 | 0.128 | 0.134 | 4-Acid Digestion | | Mo, Molybdenum (ppm) | 1.38 | 0.18 | 1.29 | 1.47 | 4-Acid Digestion | | Na, Sodium (wt.%) | 1.61 | 0.05 | 1.58 | 1.63 | 4-Acid Digestion | | Nb, Niobium (ppm) | 6.17 | 0.351 | 5.97 | 6.36 | 4-Acid Digestion | | Nd, Neodymium (ppm) | 21.9 | 0.59 | 21.4 | 22.4 | 4-Acid Digestion | | Ni, Nickel (ppm) | 503 | 26 | 492 | 515 | 4-Acid Digestion | | P, Phosphorus (wt.%) | 0.141 | 0.007 | 0.137 | 0.144 | 4-Acid Digestion | | Pb, Lead (ppm) | 10.2 | 0.9 | 9.6 | 10.7 | 4-Acid Digestion | | Pr, Praseodymium (ppm) | 5.32 | 0.13 | 5.24 | 5.41 | 4-Acid Digestion | | Rb, Rubidium (ppm) | 80 | 4.2 | 78 | 82 | 4-Acid Digestion | | S, Sulphur (wt.%) | 0.109 | 0.008 | 0.104 | 0.114 | 4-Acid Digestion | | Sb, Antimony (ppm) | 0.24 | 0.05 | 0.22 | 0.26 | 4-Acid Digestion | | Sc, Scandium (ppm) | 27.7 | 1.52 | 27 | 28.5 | 4-Acid Digestion | | Sm, Samarium (ppm) | 4.82 | 0.176 | 4.68 | 4.96 | 4-Acid Digestion | | Sn, Tin (ppm) | 1.89 | 0.179 | 1.79 | 2 | 4-Acid Digestion | | Sr, Strontium (ppm) | 478 | 24 | 465 | 491 | 4-Acid Digestion | | Ta, Tantalum (ppm) | 0.42 | 0.033 | 0.39 | 0.44 | 4-Acid Digestion | | Tb, Terbium (ppm) | 0.58 | 0.031 | 0.56 | 0.6 | 4-Acid Digestion | | Th, Thorium (ppm) | 6.55 | 0.542 | 6.3 | 6.8 | 4-Acid Digestion | | Ti, Titanium (wt.%) | 0.588 | 0.02 | 0.578 | 0.598 | 4-Acid Digestion | | Tm, Thulium (ppm) | 0.28 | 0.011 | 0.27 | 0.29 | 4-Acid Digestion | | U, Uranium (ppm) | 1.44 | 0.102 | 1.4 | 1.48 | 4-Acid Digestion | | V, Vanadium (ppm) | 253 | 10 | 248 | 258 | 4-Acid Digestion | | W, Tungsten (ppm) | 1.09 | 0.109 | 1.03 | 1.15 | 4-Acid Digestion | | Y, Yttrium (ppm) | 17.5 | 1.12 | 16.9 | 18.1 | 4-Acid Digestion | | Yb, Ytterbium (ppm) | 1.77 | 0.093 | 1.72 | 1.83 | 4-Acid Digestion | | Zn, Zinc (ppm) | 88 | 5.8 | 85 | 91 | 4-Acid Digestion | | Zr, Zirconium (ppm) | 58 | 6 | 55 | 62 | 4-Acid Digestion | | Au, Gold (ppb) | 47 | 5 | 44 | 50 | NiS Fire Assay | | Ir, Iridium (ppb) | 11 | 1 | 9 | 12 | NiS Fire Assay | | Pd, Palladium (ppb) | 238 | 14 | 230 | 246 | NiS Fire Assay | | Pt, Platinum (ppb) | 496 | 33 | 471 | 522 | NiS Fire Assay | | Rh, Rhodium (ppb) | 32 | 3 | 31 | 34 | NiS Fire Assay | | Ru, Ruthenium (ppb) | 63 | 8 | 60 | 67 | NiS Fire Assay | | Au, Gold (ppb) | 51 | 3 | 50 | 52 | Pb Fire Assay | | Pd, Palladium (ppb) | 243 | 13 | 237 | 249 | Pb Fire Assay | | Pt, Platinum (ppb) | 526 | 16 | 518 | 534 | Pb Fire Assay | | Al, Aluminium (wt.%) | 7.96 | 0.238 | 7.84 | 8.08 | Peroxide Fusion ICP | | Ba, Barium (ppm) | 429 | 23 | 415 | 443 | Peroxide Fusion ICP | | Be, Beryllium (ppm) | 1.84 | 0.26 | 1.54 | 2.14 | Peroxide Fusion ICP | | Ca, Calcium (wt.%) | 6.15 | 0.165 | 6.07 | 6.24 | Peroxide Fusion ICP | | Ce, Cerium (ppm) | 41.3 | 1.01 | 40.6 | 42.1 | Peroxide Fusion ICP | | Co, Cobalt (ppm) | 54 | 6 | 51 | 56 | Peroxide Fusion ICP | | Cr, Chromium (ppm) | 2252 | 129 | 2189 | 2316 | Peroxide Fusion ICP | | Cs, Caesium (ppm) | 4.02 | 0.245 | 3.82 | 4.22 | Peroxide Fusion ICP | | Cu, Copper (ppm) | 272 | 17 | 265 | 280 | Peroxide Fusion ICP | | Dy, Dysprosium (ppm) | 3.49 | 0.22 | 3.34 | 3.65 | Peroxide Fusion ICP | | Er, Erbium (ppm) | 1.95 | 0.116 | 1.87 | 2.04 | Peroxide Fusion ICP | | Eu, Europium (ppm) | 1.42 | 0.091 | 1.35 | 1.48 | Peroxide Fusion ICP | | Fe, Iron (wt.%) | 7.62 | 0.244 | 7.5 | 7.75 | Peroxide Fusion ICP | | Ga, Gallium (ppm) | 18 | 0.6 | 17.7 | 18.3 | Peroxide Fusion ICP | | Gd, Gadolinium (ppm) | 4.29 | 0.58 | 3.77 | 4.81 | Peroxide Fusion ICP | | Ho, Holmium (ppm) | 0.64 | 0.051 | 0.6 | 0.69 | Peroxide Fusion ICP | | K, Potassium (wt.%) | 1.36 | 0.065 | 1.33 | 1.39 | Peroxide Fusion ICP | | La, Lanthanum (ppm) | 19 | 1.52 | 17.8 | 20.1 | Peroxide Fusion ICP | | Li, Lithium (ppm) | 13.9 | 0.94 | 12.9 | 14.9 | Peroxide Fusion ICP | | Lu, Lutetium (ppm) | 0.26 | 0.04 | 0.21 | 0.3 | Peroxide Fusion ICP | | Mg, Magnesium (wt.%) | 5.26 | 0.19 | 5.16 | 5.35 | Peroxide Fusion ICP | | Mn, Manganese (wt.%) | 0.135 | 0.004 | 0.133 | 0.138 | Peroxide Fusion ICP | | Nb, Niobium (ppm) | 5.88 | 1.03 | 5.09 | 6.67 | Peroxide Fusion ICP | | Nd, Neodymium (ppm) | 21.9 | 0.99 | 21.1 | 22.7 | Peroxide Fusion ICP | | Ni, Nickel (ppm) | 518 | 35 | 503 | 533 | Peroxide Fusion ICP | | P, Phosphorus (wt.%) | 0.136 | 0.014 | 0.128 | 0.145 | Peroxide Fusion ICP | | Pr, Praseodymium (ppm) | 5.26 | 0.171 | 5.16 | 5.37 | Peroxide Fusion ICP | | Rb, Rubidium (ppm) | 82 | 1.8 | 81 | 83 | Peroxide Fusion ICP | | S, Sulphur (wt.%) | 0.106 | 0.013 | 0.098 | 0.113 | Peroxide Fusion ICP | | Sc, Scandium (ppm) | 26.6 | 2.11 | 23.8 | 29.4 | Peroxide Fusion ICP | | Si, Silicon (wt.%) | 24.17 | 0.672 | 23.84 | 24.5 | Peroxide Fusion ICP | | Sm, Samarium (ppm) | 4.64 | 0.3 | 4.42 | 4.87 | Peroxide Fusion ICP | | Sr, Strontium (ppm) | 470 | 12 | 464 | 475 | Peroxide Fusion ICP | | Tb, Terbium (ppm) | 0.59 | 0.045 | 0.56 | 0.62 | Peroxide Fusion ICP | | Th, Thorium (ppm) | 6.39 | 0.395 | 6.17 | 6.6 | Peroxide Fusion ICP | | Ti, Titanium (wt.%) | 0.597 | 0.018 | 0.588 | 0.605 | Peroxide Fusion ICP | | Tm, Thulium (ppm) | 0.26 | 0.04 | 0.23 | 0.29 | Peroxide Fusion ICP | | U, Uranium (ppm) | 1.44 | 0.089 | 1.39 | 1.49 | Peroxide Fusion ICP | | V, Vanadium (ppm) | 257 | 20 | 243 | 271 | Peroxide Fusion ICP | | Y, Yttrium (ppm) | 17.9 | 0.5 | 17.6 | 18.2 | Peroxide Fusion ICP | | Yb, Ytterbium (ppm) | 1.76 | 0.2 | 1.64 | 1.88 | Peroxide Fusion ICP | | Zn, Zinc (ppm) | 92 | 21 | 81 | 102 | Peroxide Fusion ICP |
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