| Description: OREAS 465 is a high grade ore, rare earth element (TREO = 9.88%) matrix-matched certified reference material (MMCRM) prepared and certified by Ore Research & Exploration. The materials constituting OREAS 465 were sourced from Lynas Corporation's Mount Weld Project (the ‘Central Lanthanide Deposit') which is located 35 kilometres south of Laverton in Western Australia. The Mount Weld source materials (waste, low and medium grade REE ores) were found to be highly hygroscopic to the extent that significant analytical errors would likely result during analysis unless strict moisture handling procedures were adhered. To avoid this complication, the hygroscopic property was destroyed by roasting the materials at 900°C for 2 hours. Following re-equilibration of the materials to laboratory atmosphere the hygroscopic moisture content was deemed acceptable (~0.5% H2O-). OREAS 465 is one of six MMCRMs ranging TREO 0.53 - 9.88% and contains 100 certified values (and 50 indicative values) including REE's, majors and traces by fusion XRF, fusion ICP and 4-acid digestion. A summary of the mineralogy and supergene enrichment processes that operated in the host lateritic rocks is given in the Certificates of Analysis. Two 'Datapack' files are provided. The 'Elemental' version contains all Certified Values in their elemental form while the other Datapack shows some of the Certified Values in oxide format. This includes the fusion XRF group and the majors and REE's (and a few other associated metals) in the fusion ICP group. Download Certificate OREAS465 Download DataPack OREAS465 | Analyte | Certified Value | 1SD | 95% CI Low | 95% CI High | Method |
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| Ag, Silver (ppm) | 5.48 | 0.353 | 5.3 | 5.67 | 4-Acid Digestion | | Al, Aluminium (wt.%) | 6.21 | 0.399 | 6 | 6.42 | 4-Acid Digestion | | Ba, Barium (ppm) | 4359 | 158 | 4270 | 4448 | 4-Acid Digestion | | Be, Beryllium (ppm) | 11.6 | 0.76 | 11.2 | 12.1 | 4-Acid Digestion | | Bi, Bismuth (ppm) | 17.3 | 1.03 | 16.7 | 17.9 | 4-Acid Digestion | | Ca, Calcium (wt.%) | 0.872 | 0.062 | 0.83 | 0.914 | 4-Acid Digestion | | Cd, Cadmium (ppm) | 1.2 | 0.14 | 1.12 | 1.28 | 4-Acid Digestion | | Ce, Cerium (wt.%) | 3.91 | 0.149 | 3.76 | 4.05 | 4-Acid Digestion | | Co, Cobalt (ppm) | 18.7 | 1.26 | 18.1 | 19.3 | 4-Acid Digestion | | Cs, Caesium (ppm) | 0.1 | IND | IND | IND | 4-Acid Digestion | | Cu, Copper (ppm) | 128 | 5 | 125 | 130 | 4-Acid Digestion | | Dy, Dysprosium (ppm) | 215 | 9 | 210 | 220 | 4-Acid Digestion | | Er, Erbium (ppm) | 47.3 | 2.51 | 45.8 | 48.7 | 4-Acid Digestion | | Eu, Europium (ppm) | 282 | 12 | 275 | 290 | 4-Acid Digestion | | Fe, Iron (wt.%) | 29.55 | 2.025 | 28.38 | 30.73 | 4-Acid Digestion | | Ga, Gallium (ppm) | 188 | 31 | 157 | 220 | 4-Acid Digestion | | Gd, Gadolinium (ppm) | 581 | 36 | 556 | 606 | 4-Acid Digestion | | Hf, Hafnium (ppm) | 14.4 | 1.9 | 13.7 | 15.1 | 4-Acid Digestion | | Ho, Holmium (ppm) | 26.8 | 0.94 | 26.3 | 27.2 | 4-Acid Digestion | | In, Indium (ppm) | 3.18 | 0.208 | 3.06 | 3.31 | 4-Acid Digestion | | La, Lanthanum (wt.%) | 2.27 | 0.093 | 2.15 | 2.39 | 4-Acid Digestion | | Li, Lithium (ppm) | 3.04 | 0.33 | 2.8 | 3.28 | 4-Acid Digestion | | Lu, Lutetium (ppm) | 1.72 | 0.28 | 1.54 | 1.9 | 4-Acid Digestion | | Mg, Magnesium (wt.%) | 0.374 | 0.026 | 0.356 | 0.391 | 4-Acid Digestion | | Mn, Manganese (wt.%) | 0.198 | 0.022 | 0.181 | 0.215 | 4-Acid Digestion | | Mo, Molybdenum (ppm) | 98 | 10 | 92 | 105 | 4-Acid Digestion | | Na, Sodium (wt.%) | 0.2 | IND | IND | IND | 4-Acid Digestion | | Nd, Neodymium (wt.%) | 1.1 | 0.043 | 1.05 | 1.14 | 4-Acid Digestion | | Ni, Nickel (ppm) | 106 | 14 | 95 | 116 | 4-Acid Digestion | | P, Phosphorus (wt.%) | 3.15 | 0.376 | 2.83 | 3.47 | 4-Acid Digestion | | Pb, Lead (ppm) | 573 | 16 | 562 | 583 | 4-Acid Digestion | | Pr, Praseodymium (ppm) | 3670 | 193 | 3488 | 3852 | 4-Acid Digestion | | Rb, Rubidium (ppm) | 0.43 | 0.05 | 0.4 | 0.45 | 4-Acid Digestion | | Re, Rhenium (ppm) | 0.05 | IND | IND | IND | 4-Acid Digestion | | Sc, Scandium (ppm) | 149 | 9 | 143 | 154 | 4-Acid Digestion | | Sm, Samarium (ppm) | 1307 | 81 | 1230 | 1383 | 4-Acid Digestion | | Sr, Strontium (wt.%) | 0.505 | 0.026 | 0.487 | 0.523 | 4-Acid Digestion | | Tb, Terbium (ppm) | 57 | 3.3 | 55 | 59 | 4-Acid Digestion | | Te, Tellurium (ppm) | 1 | IND | IND | IND | 4-Acid Digestion | | Th, Thorium (ppm) | 805 | 150 | 693 | 916 | 4-Acid Digestion | | Tl, Thallium (ppm) | 0.087 | 0.009 | 0.082 | 0.093 | 4-Acid Digestion | | Tm, Thulium (ppm) | 3.82 | 0.274 | 3.65 | 4 | 4-Acid Digestion | | U, Uranium (ppm) | 12.6 | 0.68 | 12.2 | 13 | 4-Acid Digestion | | V, Vanadium (ppm) | 427 | 69 | 380 | 473 | 4-Acid Digestion | | Y, Yttrium (ppm) | 478 | 32 | 455 | 500 | 4-Acid Digestion | | Yb, Ytterbium (ppm) | 14.9 | 0.95 | 14.3 | 15.5 | 4-Acid Digestion | | Zn, Zinc (ppm) | 921 | 133 | 841 | 1001 | 4-Acid Digestion | | Al2O3, Aluminium(III) oxide (wt.%) | 12.47 | 0.494 | 12.08 | 12.85 | Borate / Peroxide Fusion ICP | | BaO, Barium oxide (ppm) | 4909 | 518 | 4608 | 5211 | Borate / Peroxide Fusion ICP | | Be, Beryllium (ppm) | 13.2 | 0.89 | 12.5 | 14 | Borate / Peroxide Fusion ICP | | Bi, Bismuth (ppm) | 16.9 | 1.04 | 16 | 17.9 | Borate / Peroxide Fusion ICP | | CaO, Calcium oxide (wt.%) | 1.26 | 0.084 | 1.21 | 1.31 | Borate / Peroxide Fusion ICP | | CeO2, Cerium(IV) oxide (wt.%) | 4.86 | 0.166 | 4.75 | 4.96 | Borate / Peroxide Fusion ICP | | Cr2O3, Chromium(III) oxide (ppm) | 795 | 61 | 755 | 836 | Borate / Peroxide Fusion ICP | | Cs, Caesium (ppm) | 0.1 | IND | IND | IND | Borate / Peroxide Fusion ICP | | Dy2O3, Dysprosium(III) oxide (ppm) | 249 | 14 | 240 | 257 | Borate / Peroxide Fusion ICP | | Er2O3, Erbium(III) oxide (ppm) | 58 | 3.6 | 56 | 60 | Borate / Peroxide Fusion ICP | | Eu2O3, Europium(III) oxide (ppm) | 331 | 13 | 324 | 338 | Borate / Peroxide Fusion ICP | | Fe2O3, Iron(III) oxide (wt.%) | 49.63 | 0.906 | 48.84 | 50.41 | Borate / Peroxide Fusion ICP | | Ga, Gallium (ppm) | 214 | 43 | 166 | 261 | Borate / Peroxide Fusion ICP | | Gd2O3, Gadolinium(III) oxide (ppm) | 674 | 35 | 654 | 693 | Borate / Peroxide Fusion ICP | | HfO2, Hafnium dioxide (ppm) | 48.8 | 8.5 | 42.3 | 55.4 | Borate / Peroxide Fusion ICP | | Ho2O3, Holmium(III) oxide (ppm) | 31.7 | 2.44 | 30.4 | 33.1 | Borate / Peroxide Fusion ICP | | In, Indium (ppm) | 3.47 | 0.227 | 3.32 | 3.62 | Borate / Peroxide Fusion ICP | | La2O3, Lanthanum(III) oxide (wt.%) | 2.83 | 0.097 | 2.78 | 2.88 | Borate / Peroxide Fusion ICP | | Lu2O3, Lutetium(III) oxide (ppm) | 2.39 | 0.138 | 2.34 | 2.45 | Borate / Peroxide Fusion ICP | | MgO, Magnesium oxide (wt.%) | 0.65 | 0.034 | 0.625 | 0.674 | Borate / Peroxide Fusion ICP | | MnO, Manganese oxide (wt.%) | 0.339 | 0.03 | 0.318 | 0.36 | Borate / Peroxide Fusion ICP | | Mo, Molybdenum (ppm) | 114 | 6 | 109 | 119 | Borate / Peroxide Fusion ICP | | Nb2O5, Niobium(V) oxide (ppm) | 6695 | 431 | 6383 | 7007 | Borate / Peroxide Fusion ICP | | Nd2O3, Neodymium(III) oxide (wt.%) | 1.37 | 0.059 | 1.34 | 1.41 | Borate / Peroxide Fusion ICP | | P2O5, Phosphorus(V) oxide (wt.%) | 8.74 | 0.28 | 8.49 | 8.98 | Borate / Peroxide Fusion ICP | | PbO, Lead oxide (ppm) | 545 | 20 | 534 | 556 | Borate / Peroxide Fusion ICP | | Pr6O11, Praseodymium(III,IV) oxide (ppm) | 4557 | 198 | 4443 | 4672 | Borate / Peroxide Fusion ICP | | S, Sulphur (ppm) | 1941 | 132 | 1787 | 2095 | Borate / Peroxide Fusion ICP | | SiO2, Silicon dioxide (wt.%) | 3.28 | 0.093 | 3.18 | 3.39 | Borate / Peroxide Fusion ICP | | Sm2O3, Samarium(III) oxide (ppm) | 1578 | 42 | 1560 | 1597 | Borate / Peroxide Fusion ICP | | SnO2, Tin dioxide (ppm) | 172 | 26 | 157 | 188 | Borate / Peroxide Fusion ICP | | SrO, Strontium oxide (ppm) | 6154 | 215 | 6014 | 6294 | Borate / Peroxide Fusion ICP | | Ta2O5, Tantalum(V) oxide (ppm) | 96 | 6.2 | 91 | 101 | Borate / Peroxide Fusion ICP | | Tb4O7, Terbium(III,IV) oxide (ppm) | 67 | 3.7 | 65 | 69 | Borate / Peroxide Fusion ICP | | ThO2, Thorium dioxide (ppm) | 985 | 49 | 956 | 1013 | Borate / Peroxide Fusion ICP | | TiO2, Titanium dioxide (wt.%) | 10.51 | 0.307 | 10.28 | 10.74 | Borate / Peroxide Fusion ICP | | Tm2O3, Thulium(III) oxide (ppm) | 5.16 | 0.299 | 5.02 | 5.31 | Borate / Peroxide Fusion ICP | | U3O8, Uranium(V,VI) oxide (ppm) | 16 | 0.47 | 15.8 | 16.3 | Borate / Peroxide Fusion ICP | | V2O5, Vanadium(V) oxide (ppm) | 953 | 64 | 913 | 994 | Borate / Peroxide Fusion ICP | | WO3, Tungsten trioxide (ppm) | 9.48 | 1.56 | 8.2 | 10.76 | Borate / Peroxide Fusion ICP | | Y2O3, Yttrium(III) oxide (ppm) | 665 | 42 | 640 | 691 | Borate / Peroxide Fusion ICP | | Yb2O3, Ytterbium(III) oxide (ppm) | 21.6 | 0.83 | 21.2 | 22 | Borate / Peroxide Fusion ICP | | ZrO2, Zirconium dioxide (ppm) | 2539 | 274 | 2280 | 2798 | Borate / Peroxide Fusion ICP | | CeO2, Cerium(IV) oxide (wt.%) | 4.88 | 0.045 | 4.84 | 4.92 | Borate Fusion XRF | | Fe2O3, Iron(III) oxide (wt.%) | 49.96 | 1.309 | 48.22 | 51.7 | Borate Fusion XRF | | La2O3, Lanthanum(III) oxide (wt.%) | 2.84 | 0.033 | 2.81 | 2.87 | Borate Fusion XRF | | Nd2O3, Neodymium(III) oxide (wt.%) | 1.38 | 0.102 | 1.28 | 1.48 | Borate Fusion XRF | | Pr6O11, Praseodymium(III,IV) oxide (ppm) | 4534 | 144 | 4362 | 4705 | Borate Fusion XRF | | Sm2O3, Samarium(III) oxide (ppm) | 1640 | 136 | 1500 | 1780 | Borate Fusion XRF | | ThO2, Thorium dioxide (ppm) | 901 | 128 | 757 | 1045 | Borate Fusion XRF | | Y2O3, Yttrium(III) oxide (ppm) | 637 | 45 | 614 | 661 | Borate Fusion XRF | | LOI1000, Loss On Ignition @1000°C (wt.%) | 0.824 | 0.133 | 0.697 | 0.95 | Thermogravimetry |
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