Specifications
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CRM State:
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Matrix:
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Mineralisation:
OREAS 465b
OREAS 465b is an ore grade, rare earth element (TREO + Y₂O₃ ~8.84%) certified reference material (CRM) prepared from a blend of rare earth element (REE)–bearing ores sourced from Lynas Corporation’s Mount Weld Central Lanthanide Deposit. The Mount Weld deposit is a Proterozoic, carbonatite-hosted, deeply weathered monazite-rich REE deposit located ~35 km south of Laverton in Western Australia. The REE-bearing ores are predominantly comprised of secondary REE phosphates such as monazite and other alteration products formed through intense tropical weathering.
OREAS 465b belongs to a CRM suite covering 0.11 – 8.84% TREO + Y₂O₃, with method-specific certification for REEs, major elements, and trace elements using fusion with XRF, fusion with ICP-OES and/or ICP-MS, and 4-acid digestion with ICP-OES and/or ICP-MS.
Twenty-five commercial analytical laboratories participated in the program to certify the elements reported below:
- 4-acid (HNO3-HF-HClO4-HCl) digestion with full suite ICP-OES and ICP-MS elemental packages
- Sodium peroxide/borate fusion with full suite ICP-OES and ICP-MS elemental packages
- Lithium borate fusion whole rock analysis package with X-ray fluorescence
- Thermogravimetry: Loss on Ignition (LOI) at 1000 °C
Homogeneity was evaluated using 12 subsamples analysed by sodium peroxide fusion with ICP finish. ANOVA was applied to triplicates from four test units to compare within- and between-unit variances, providing a statistical measure of batch homogeneity.
| Analyte | Certified Value | 1SD | Expanded Uncertainty Low | Expanded Uncertainty High | Method |
|---|---|---|---|---|---|
| CeO2, Cerium(IV) oxide (wt.%) | 4.37 | 0.173 | 4.22 | 4.52 | Borate / Peroxide Fusion ICP |
| La2O3, Lanthanum(III) oxide (wt.%) | 2.46 | 0.067 | 2.39 | 2.53 | Borate / Peroxide Fusion ICP |
| Nd2O3, Neodymium(III) oxide (wt.%) | 1.27 | 0.068 | 1.22 | 1.32 | Borate / Peroxide Fusion ICP |
| Pr6O11, Praseodymium(III,IV) oxide (wt.%) | 0.409 | 0.021 | 0.393 | 0.426 | Borate / Peroxide Fusion ICP |
| Ag, Silver (ppm) | 6.09 | 0.467 | 5.56 | 6.61 | 4-Acid Digestion |
| Al, Aluminium (wt.%) | 5.53 | 0.386 | 5.26 | 5.79 | 4-Acid Digestion |
| Ba, Barium (wt.%) | 0.344 | 0.029 | 0.318 | 0.370 | 4-Acid Digestion |
| Be, Beryllium (ppm) | 12.3 | 1.4 | 11.4 | 13.2 | 4-Acid Digestion |
| Bi, Bismuth (ppm) | 14.7 | 0.90 | 13.8 | 15.6 | 4-Acid Digestion |
| Ca, Calcium (wt.%) | 0.643 | 0.061 | 0.597 | 0.688 | 4-Acid Digestion |
| Cd, Cadmium (ppm) | 0.87 | 0.23 | 0.70 | 1.03 | 4-Acid Digestion |
| Ce, Cerium (wt.%) | 3.47 | 0.58 | 3.06 | 3.88 | 4-Acid Digestion |
| Co, Cobalt (ppm) | 17.2 | 1.23 | 16.3 | 18.2 | 4-Acid Digestion |
| Cr, Chromium (ppm) | 288 | 43 | 262 | 314 | 4-Acid Digestion |
| Cs, Caesium (ppm) | < 0.050 | IND | IND | IND | 4-Acid Digestion |
| Cu, Copper (ppm) | 114 | 6 | 108 | 121 | 4-Acid Digestion |
| Dy, Dysprosium (ppm) | 196 | 73 | 146 | 245 | 4-Acid Digestion |
| Er, Erbium (ppm) | 38.0 | 10.1 | 30.0 | 45.9 | 4-Acid Digestion |
| Fe, Iron (wt.%) | 29.18 | 0.998 | 28.13 | 30.22 | 4-Acid Digestion |
| Ho, Holmium (ppm) | 22.6 | 3.2 | 19.6 | 25.7 | 4-Acid Digestion |
| In, Indium (ppm) | 3.00 | 0.092 | 2.88 | 3.12 | 4-Acid Digestion |
| K, Potassium (wt.%) | 0.012 | 0.004 | 0.010 | 0.014 | 4-Acid Digestion |
| Li, Lithium (ppm) | 3.13 | 0.51 | 2.67 | 3.60 | 4-Acid Digestion |
| Mg, Magnesium (wt.%) | 0.276 | 0.027 | 0.257 | 0.295 | 4-Acid Digestion |
| Mn, Manganese (wt.%) | 0.214 | 0.015 | 0.200 | 0.227 | 4-Acid Digestion |
| Mo, Molybdenum (ppm) | 96 | 9.0 | 89 | 102 | 4-Acid Digestion |
| Na, Sodium (wt.%) | 0.060 | 0.012 | 0.048 | 0.071 | 4-Acid Digestion |
| Nb, Niobium (wt.%) | 0.352 | 0.086 | 0.287 | 0.416 | 4-Acid Digestion |
| Nd, Neodymium (wt.%) | 1.08 | 0.14 | 0.95 | 1.20 | 4-Acid Digestion |
| Ni, Nickel (ppm) | 45.8 | 3.95 | 42.8 | 48.7 | 4-Acid Digestion |
| P, Phosphorus (wt.%) | 2.63 | 0.40 | 2.31 | 2.96 | 4-Acid Digestion |
| Pb, Lead (ppm) | 462 | 30 | 432 | 491 | 4-Acid Digestion |
| Pr, Praseodymium (wt.%) | 0.342 | 0.056 | 0.273 | 0.411 | 4-Acid Digestion |
| Rb, Rubidium (ppm) | 0.42 | 0.08 | 0.33 | 0.51 | 4-Acid Digestion |
| S, Sulphur (wt.%) | 0.151 | 0.032 | 0.128 | 0.174 | 4-Acid Digestion |
| Sb, Antimony (ppm) | 0.84 | 0.25 | 0.59 | 1.09 | 4-Acid Digestion |
| Sn, Tin (ppm) | 69 | 27 | 52 | 85 | 4-Acid Digestion |
| Sr, Strontium (wt.%) | 0.378 | 0.029 | 0.350 | 0.406 | 4-Acid Digestion |
| Te, Tellurium (ppm) | 0.51 | 0.08 | 0.40 | 0.61 | 4-Acid Digestion |
| Tl, Thallium (ppm) | 0.094 | 0.006 | 0.085 | 0.103 | 4-Acid Digestion |
| Tm, Thulium (ppm) | 3.18 | 0.90 | 2.52 | 3.83 | 4-Acid Digestion |
| U, Uranium (ppm) | 12.4 | 0.70 | 11.9 | 13.0 | 4-Acid Digestion |
| V, Vanadium (ppm) | 420 | 37 | 395 | 444 | 4-Acid Digestion |
| W, Tungsten (ppm) | 3.89 | 0.63 | 3.35 | 4.43 | 4-Acid Digestion |
| Zn, Zinc (ppm) | 950 | 52 | 915 | 985 | 4-Acid Digestion |
| Al, Aluminium (wt.%) | 5.90 | 0.114 | 5.75 | 6.04 | Borate / Peroxide Fusion ICP |
| Al2O3, Aluminium(III) oxide (wt.%) | 11.14 | 0.216 | 10.87 | 11.41 | Borate / Peroxide Fusion ICP |
| Ba, Barium (wt.%) | 0.386 | 0.016 | 0.371 | 0.402 | Borate / Peroxide Fusion ICP |
| BaO, Barium oxide (wt.%) | 0.432 | 0.017 | 0.414 | 0.449 | Borate / Peroxide Fusion ICP |
| Be, Beryllium (ppm) | 13.5 | 1.10 | 11.6 | 15.3 | Borate / Peroxide Fusion ICP |
| Bi, Bismuth (ppm) | 15.0 | 0.74 | 13.3 | 16.7 | Borate / Peroxide Fusion ICP |
| Ca, Calcium (wt.%) | 0.672 | 0.037 | 0.636 | 0.709 | Borate / Peroxide Fusion ICP |
| CaO, Calcium oxide (wt.%) | 0.946 | 0.050 | 0.889 | 1.004 | Borate / Peroxide Fusion ICP |
| Cd, Cadmium (ppm) | < 10.0 | IND | IND | IND | Borate / Peroxide Fusion ICP |
| Ce, Cerium (wt.%) | 3.56 | 0.141 | 3.44 | 3.68 | Borate / Peroxide Fusion ICP |
| Co, Cobalt (ppm) | 19.4 | 1.22 | 17.5 | 21.2 | Borate / Peroxide Fusion ICP |
| Cr, Chromium (ppm) | 350 | 27 | 321 | 379 | Borate / Peroxide Fusion ICP |
| Cr2O3, Chromium(III) oxide (ppm) | 511 | 39 | 469 | 553 | Borate / Peroxide Fusion ICP |
| Cs, Caesium (ppm) | < 0.10 | IND | IND | IND | Borate / Peroxide Fusion ICP |
| Cu, Copper (ppm) | 142 | 24 | 117 | 167 | Borate / Peroxide Fusion ICP |
| Dy, Dysprosium (ppm) | 198 | 8 | 190 | 206 | Borate / Peroxide Fusion ICP |
| Dy2O3, Dysprosium(III) oxide (ppm) | 227 | 9 | 218 | 236 | Borate / Peroxide Fusion ICP |
| Er, Erbium (ppm) | 46.1 | 2.61 | 43.9 | 48.3 | Borate / Peroxide Fusion ICP |
| Er2O3, Erbium(III) oxide (ppm) | 53 | 3.0 | 50 | 55 | Borate / Peroxide Fusion ICP |
| Eu, Europium (ppm) | 265 | 13 | 255 | 276 | Borate / Peroxide Fusion ICP |
| Eu2O3, Europium(III) oxide (ppm) | 307 | 15 | 295 | 319 | Borate / Peroxide Fusion ICP |
| Fe, Iron (wt.%) | 30.54 | 0.751 | 29.65 | 31.44 | Borate / Peroxide Fusion ICP |
| Fe2O3, Iron(III) oxide (wt.%) | 43.67 | 1.074 | 42.39 | 44.95 | Borate / Peroxide Fusion ICP |
| Gd, Gadolinium (ppm) | 557 | 35 | 528 | 585 | Borate / Peroxide Fusion ICP |
| Gd2O3, Gadolinium(III) oxide (ppm) | 641 | 41 | 610 | 673 | Borate / Peroxide Fusion ICP |
| Ho, Holmium (ppm) | 25.0 | 1.10 | 24.0 | 26.0 | Borate / Peroxide Fusion ICP |
| Ho2O3, Holmium(III) oxide (ppm) | 28.7 | 1.26 | 27.5 | 29.8 | Borate / Peroxide Fusion ICP |
| In, Indium (ppm) | 3.05 | 0.158 | 2.75 | 3.36 | Borate / Peroxide Fusion ICP |
| La, Lanthanum (wt.%) | 2.10 | 0.057 | 2.03 | 2.16 | Borate / Peroxide Fusion ICP |
| Lu, Lutetium (ppm) | 1.77 | 0.104 | 1.59 | 1.95 | Borate / Peroxide Fusion ICP |
| Lu2O3, Lutetium(III) oxide (ppm) | 2.01 | 0.114 | 1.82 | 2.21 | Borate / Peroxide Fusion ICP |
| Mg, Magnesium (wt.%) | 0.274 | 0.031 | 0.248 | 0.300 | Borate / Peroxide Fusion ICP |
| MgO, Magnesium oxide (wt.%) | 0.455 | 0.052 | 0.411 | 0.498 | Borate / Peroxide Fusion ICP |
| Mn, Manganese (wt.%) | 0.234 | 0.010 | 0.223 | 0.246 | Borate / Peroxide Fusion ICP |
| MnO, Manganese oxide (wt.%) | 0.303 | 0.013 | 0.287 | 0.318 | Borate / Peroxide Fusion ICP |
| Mo, Molybdenum (ppm) | 97 | 6.8 | 87 | 108 | Borate / Peroxide Fusion ICP |
| Nb, Niobium (wt.%) | 0.423 | 0.023 | 0.405 | 0.441 | Borate / Peroxide Fusion ICP |
| Nd, Neodymium (wt.%) | 1.09 | 0.058 | 1.05 | 1.13 | Borate / Peroxide Fusion ICP |
| Ni, Nickel (ppm) | 52 | 9 | 35 | 69 | Borate / Peroxide Fusion ICP |
| P, Phosphorus (wt.%) | 3.21 | 0.201 | 2.92 | 3.51 | Borate / Peroxide Fusion ICP |
| P2O5, Phosphorus(V) oxide (wt.%) | 7.36 | 0.459 | 6.69 | 8.04 | Borate / Peroxide Fusion ICP |
| Pb, Lead (ppm) | 490 | 21 | 452 | 527 | Borate / Peroxide Fusion ICP |
| Pr, Praseodymium (wt.%) | 0.339 | 0.017 | 0.325 | 0.353 | Borate / Peroxide Fusion ICP |
| S, Sulphur (wt.%) | 0.171 | 0.011 | 0.145 | 0.198 | Borate / Peroxide Fusion ICP |
| Sc, Scandium (ppm) | 161 | 24 | 137 | 184 | Borate / Peroxide Fusion ICP |
| Si, Silicon (wt.%) | 1.48 | 0.063 | 1.37 | 1.59 | Borate / Peroxide Fusion ICP |
| SiO2, Silicon dioxide (wt.%) | 3.17 | 0.135 | 2.93 | 3.40 | Borate / Peroxide Fusion ICP |
| Sm, Samarium (wt.%) | 0.122 | 0.008 | 0.116 | 0.129 | Borate / Peroxide Fusion ICP |
| Sm2O3, Samarium(III) oxide (wt.%) | 0.142 | 0.009 | 0.134 | 0.149 | Borate / Peroxide Fusion ICP |
| Sn, Tin (ppm) | 131 | 4 | 125 | 136 | Borate / Peroxide Fusion ICP |
| Sr, Strontium (wt.%) | 0.444 | 0.029 | 0.422 | 0.466 | Borate / Peroxide Fusion ICP |
| Ta, Tantalum (ppm) | 67 | 4.3 | 64 | 71 | Borate / Peroxide Fusion ICP |
| Tb, Terbium (ppm) | 52 | 2.3 | 49 | 54 | Borate / Peroxide Fusion ICP |
| Tb4O7, Terbium(III,IV) oxide (ppm) | 61 | 2.7 | 58 | 63 | Borate / Peroxide Fusion ICP |
| Th, Thorium (ppm) | 772 | 29 | 745 | 799 | Borate / Peroxide Fusion ICP |
| Ti, Titanium (wt.%) | 5.18 | 0.236 | 4.95 | 5.41 | Borate / Peroxide Fusion ICP |
| TiO2, Titanium dioxide (wt.%) | 8.64 | 0.394 | 8.25 | 9.03 | Borate / Peroxide Fusion ICP |
| Tm, Thulium (ppm) | 4.03 | 0.253 | 3.80 | 4.25 | Borate / Peroxide Fusion ICP |
| Tm2O3, Thulium(III) oxide (ppm) | 4.59 | 0.278 | 4.35 | 4.84 | Borate / Peroxide Fusion ICP |
| U, Uranium (ppm) | 12.7 | 0.43 | 12.2 | 13.3 | Borate / Peroxide Fusion ICP |
| V, Vanadium (ppm) | 450 | 28 | 426 | 474 | Borate / Peroxide Fusion ICP |
| V2O5, Vanadium(V) oxide (ppm) | 803 | 50 | 761 | 846 | Borate / Peroxide Fusion ICP |
| W, Tungsten (ppm) | 5.62 | 1.01 | 5.17 | 6.06 | Borate / Peroxide Fusion ICP |
| Y, Yttrium (ppm) | 481 | 27 | 460 | 502 | Borate / Peroxide Fusion ICP |
| Y2O3, Yttrium(III) oxide (ppm) | 605 | 30 | 580 | 631 | Borate / Peroxide Fusion ICP |
| Yb, Ytterbium (ppm) | 17.7 | 0.88 | 16.6 | 18.7 | Borate / Peroxide Fusion ICP |
| Yb2O3, Ytterbium(III) oxide (ppm) | 19.9 | 0.93 | 18.7 | 21.0 | Borate / Peroxide Fusion ICP |
| Zn, Zinc (ppm) | 968 | 49 | 914 | 1022 | Borate / Peroxide Fusion ICP |
| Zr, Zirconium (wt.%) | 0.162 | 0.021 | 0.145 | 0.179 | Borate / Peroxide Fusion ICP |
| Al2O3, Aluminium(III) oxide (wt.%) | 10.88 | 0.252 | 10.65 | 11.12 | Borate Fusion XRF |
| BaO, Barium oxide (wt.%) | 0.451 | 0.020 | 0.415 | 0.488 | Borate Fusion XRF |
| CaO, Calcium oxide (wt.%) | 0.958 | 0.060 | 0.912 | 1.005 | Borate Fusion XRF |
| CeO2, Cerium(IV) oxide (wt.%) | 4.32 | 0.117 | 4.24 | 4.40 | Borate Fusion XRF |
| Cr2O3, Chromium(III) oxide (ppm) | 534 | 91 | 387 | 681 | Borate Fusion XRF |
| Eu2O3, Europium(III) oxide (ppm) | 263 | 60 | 151 | 374 | Borate Fusion XRF |
| Fe2O3, Iron(III) oxide (wt.%) | 44.30 | 1.581 | 43.01 | 45.59 | Borate Fusion XRF |
| Gd2O3, Gadolinium(III) oxide (ppm) | 735 | 104 | 619 | 852 | Borate Fusion XRF |
| Ho2O3, Holmium(III) oxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| K2O, Potassium oxide (wt.%) | 0.018 | 0.004 | 0.015 | 0.022 | Borate Fusion XRF |
| La2O3, Lanthanum(III) oxide (wt.%) | 2.51 | 0.031 | 2.48 | 2.54 | Borate Fusion XRF |
| Lu2O3, Lutetium(III) oxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| MgO, Magnesium oxide (wt.%) | 0.467 | 0.035 | 0.438 | 0.496 | Borate Fusion XRF |
| MnO, Manganese oxide (wt.%) | 0.318 | 0.014 | 0.300 | 0.335 | Borate Fusion XRF |
| Nb2O5, Niobium(V) oxide (wt.%) | 0.599 | 0.022 | 0.576 | 0.621 | Borate Fusion XRF |
| Nd2O3, Neodymium(III) oxide (wt.%) | 1.26 | 0.037 | 1.23 | 1.29 | Borate Fusion XRF |
| P2O5, Phosphorus(V) oxide (wt.%) | 7.47 | 0.337 | 7.19 | 7.74 | Borate Fusion XRF |
| Pr6O11, Praseodymium(III,IV) oxide (wt.%) | 0.408 | 0.026 | 0.384 | 0.432 | Borate Fusion XRF |
| SiO2, Silicon dioxide (wt.%) | 3.00 | 0.091 | 2.91 | 3.10 | Borate Fusion XRF |
| Sm2O3, Samarium(III) oxide (wt.%) | 0.143 | 0.011 | 0.131 | 0.154 | Borate Fusion XRF |
| SrO, Strontium oxide (wt.%) | 0.539 | 0.034 | 0.498 | 0.581 | Borate Fusion XRF |
| Tb4O7, Terbium(III,IV) oxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| ThO2, Thorium dioxide (ppm) | 859 | 48 | 806 | 911 | Borate Fusion XRF |
| TiO2, Titanium dioxide (wt.%) | 8.90 | 0.242 | 8.70 | 9.09 | Borate Fusion XRF |
| Tm2O3, Thulium(III) oxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| U3O8, Uranium(V,VI) oxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| V2O5, Vanadium(V) oxide (ppm) | 892 | 121 | 700 | 1084 | Borate Fusion XRF |
| Y2O3, Yttrium(III) oxide (ppm) | 588 | 69 | 472 | 703 | Borate Fusion XRF |
| Yb2O3, Ytterbium(III) oxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| ZrO2, Zirconium dioxide (wt.%) | 0.232 | 0.014 | 0.211 | 0.254 | Borate Fusion XRF |
| LOI1000, Loss on ignition @1000 °C (wt.%) | 11.66 | 0.489 | 11.37 | 11.94 | Thermogravimetry |
Downloads
Certificate DataPack SDS NRAM (206 KB)Stock
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Pack SizePriceStock Level
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10g Sachet$6.6027,000 +
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1Kg Jar$470.00260 +
Specifications
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CRM State:
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Matrix:
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Mineralisation:
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CRM Group(s):