OREAS 464b
oxide
lateritic
carbonatite
OREAS 464b
SKU: 464b
OREAS 464b is an ore grade, rare earth element (TREO + Y₂O₃ ~4.84%) certified
reference material (CRM) prepared from a blend of rare earth element
(REE)–bearing waste rock sourced from Lynas Corporation’s Mount Weld Central
Lanthanide Deposit and barren siliclastic sedimentary rock sourced from
Victoria, Australia. 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 464b belongs to a CRM suite covering 0.11 – 9.88% 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.
Specifications
- State: oxide
- Matrix: lateritic
- Mineralisation: carbonatite
- CRM Group: REE
Certified Values
| Analyte | Certified Value | 1SD | 95% CL Low | 95% CL High | Method |
|---|---|---|---|---|---|
| Ag, Silver (ppm) | 3.31 | 0.62 | 2.82 | 3.80 | 4-Acid Digestion |
| Al, Aluminium (wt.%) | 4.08 | 0.187 | 3.93 | 4.24 | 4-Acid Digestion |
| Ba, Barium (wt.%) | 0.146 | 0.009 | 0.138 | 0.155 | 4-Acid Digestion |
| Be, Beryllium (ppm) | 14.2 | 2.4 | 12.7 | 15.6 | 4-Acid Digestion |
| Bi, Bismuth (ppm) | 3.51 | 0.184 | 3.32 | 3.71 | 4-Acid Digestion |
| Ca, Calcium (wt.%) | 0.667 | 0.076 | 0.620 | 0.714 | 4-Acid Digestion |
| Ce, Cerium (wt.%) | 1.42 | 0.140 | 1.31 | 1.52 | 4-Acid Digestion |
| Co, Cobalt (ppm) | 15.6 | 0.88 | 14.8 | 16.5 | 4-Acid Digestion |
| Cr, Chromium (ppm) | 231 | 29 | 213 | 248 | 4-Acid Digestion |
| Cu, Copper (ppm) | 82 | 6.0 | 78 | 87 | 4-Acid Digestion |
| Dy, Dysprosium (ppm) | 148 | 17 | 133 | 162 | 4-Acid Digestion |
| Er, Erbium (ppm) | 31.6 | 3.4 | 28.4 | 34.8 | 4-Acid Digestion |
| Eu, Europium (ppm) | 281 | 38 | 251 | 312 | 4-Acid Digestion |
| Fe, Iron (wt.%) | 32.48 | 1.472 | 31.54 | 33.42 | 4-Acid Digestion |
| Gd, Gadolinium (ppm) | 582 | 101 | 495 | 668 | 4-Acid Digestion |
| Ho, Holmium (ppm) | 17.3 | 1.8 | 15.6 | 19.0 | 4-Acid Digestion |
| In, Indium (ppm) | 1.74 | 0.105 | 1.65 | 1.84 | 4-Acid Digestion |
| K, Potassium (wt.%) | 0.072 | 0.011 | 0.063 | 0.081 | 4-Acid Digestion |
| Li, Lithium (ppm) | 7.33 | 0.504 | 6.94 | 7.71 | 4-Acid Digestion |
| Mg, Magnesium (wt.%) | 0.666 | 0.083 | 0.615 | 0.716 | 4-Acid Digestion |
| Mn, Manganese (wt.%) | 0.242 | 0.024 | 0.225 | 0.258 | 4-Acid Digestion |
| Mo, Molybdenum (ppm) | 69 | 5.5 | 65 | 73 | 4-Acid Digestion |
| Na, Sodium (wt.%) | 0.119 | 0.012 | 0.110 | 0.128 | 4-Acid Digestion |
| Nb, Niobium (wt.%) | 0.183 | 0.023 | 0.167 | 0.198 | 4-Acid Digestion |
| Nd, Neodymium (wt.%) | 0.888 | 0.125 | 0.795 | 0.981 | 4-Acid Digestion |
| Ni, Nickel (ppm) | 65 | 4.5 | 60 | 69 | 4-Acid Digestion |
| P, Phosphorus (wt.%) | 1.10 | 0.22 | 0.98 | 1.22 | 4-Acid Digestion |
| Pb, Lead (ppm) | 175 | 28 | 159 | 190 | 4-Acid Digestion |
| Pr, Praseodymium (wt.%) | 0.238 | 0.011 | 0.219 | 0.257 | 4-Acid Digestion |
| Rb, Rubidium (ppm) | 3.87 | 0.44 | 3.51 | 4.22 | 4-Acid Digestion |
| S, Sulphur (wt.%) | 0.099 | 0.007 | 0.090 | 0.109 | 4-Acid Digestion |
| Sb, Antimony (ppm) | 1.69 | 0.124 | 1.53 | 1.85 | 4-Acid Digestion |
| Sm, Samarium (wt.%) | 0.137 | 0.010 | 0.126 | 0.148 | 4-Acid Digestion |
| Sn, Tin (ppm) | 33.9 | 2.10 | 32.4 | 35.4 | 4-Acid Digestion |
| Sr, Strontium (wt.%) | 0.163 | 0.007 | 0.155 | 0.171 | 4-Acid Digestion |
| Ta, Tantalum (ppm) | 22.1 | 1.50 | 20.9 | 23.3 | 4-Acid Digestion |
| Tb, Terbium (ppm) | 49.2 | 8.5 | 42.3 | 56.1 | 4-Acid Digestion |
| Te, Tellurium (ppm) | 0.32 | 0.05 | 0.27 | 0.37 | 4-Acid Digestion |
| Ti, Titanium (wt.%) | 1.43 | 0.16 | 1.32 | 1.53 | 4-Acid Digestion |
| Tl, Thallium (ppm) | 0.13 | 0.013 | 0.12 | 0.15 | 4-Acid Digestion |
| Tm, Thulium (ppm) | 2.84 | 0.29 | 2.56 | 3.11 | 4-Acid Digestion |
| U, Uranium (ppm) | 15.5 | 0.91 | 14.7 | 16.2 | 4-Acid Digestion |
| V, Vanadium (ppm) | 191 | 17 | 181 | 201 | 4-Acid Digestion |
| W, Tungsten (ppm) | 2.40 | 0.218 | 2.19 | 2.61 | 4-Acid Digestion |
| Yb, Ytterbium (ppm) | 13.7 | 3.6 | 11.1 | 16.3 | 4-Acid Digestion |
| Zn, Zinc (wt.%) | 0.101 | 0.010 | 0.095 | 0.107 | 4-Acid Digestion |
| Al, Aluminium (wt.%) | 4.34 | 0.095 | 4.24 | 4.45 | Borate / Peroxide Fusion ICP |
| Al2O3, Aluminium(III) oxide (wt.%) | 8.21 | 0.179 | 8.02 | 8.40 | Borate / Peroxide Fusion ICP |
| Ba, Barium (wt.%) | 0.159 | 0.007 | 0.151 | 0.167 | Borate / Peroxide Fusion ICP |
| BaO, Barium oxide (wt.%) | 0.177 | 0.007 | 0.168 | 0.186 | Borate / Peroxide Fusion ICP |
| Be, Beryllium (ppm) | 15.3 | 1.40 | 13.7 | 16.8 | Borate / Peroxide Fusion ICP |
| Bi, Bismuth (ppm) | 3.64 | 0.343 | 2.73 | 4.55 | Borate / Peroxide Fusion ICP |
| Ca, Calcium (wt.%) | 0.725 | 0.025 | 0.685 | 0.766 | Borate / Peroxide Fusion ICP |
| CaO, Calcium oxide (wt.%) | 1.01 | 0.035 | 0.96 | 1.07 | Borate / Peroxide Fusion ICP |
| Cd, Cadmium (ppm) | < 10.0 | IND | IND | IND | Borate / Peroxide Fusion ICP |
| Ce, Cerium (wt.%) | 1.46 | 0.067 | 1.41 | 1.52 | Borate / Peroxide Fusion ICP |
| CeO2, Cerium(IV) oxide (wt.%) | 1.80 | 0.083 | 1.73 | 1.87 | Borate / Peroxide Fusion ICP |
| Co, Cobalt (ppm) | 16.4 | 1.08 | 15.1 | 17.7 | Borate / Peroxide Fusion ICP |
| Cr, Chromium (ppm) | 263 | 19 | 242 | 284 | Borate / Peroxide Fusion ICP |
| Cr2O3, Chromium(III) oxide (ppm) | 384 | 28 | 353 | 415 | Borate / Peroxide Fusion ICP |
| Cu, Copper (ppm) | 95 | 11 | 78 | 112 | Borate / Peroxide Fusion ICP |
| Dy, Dysprosium (ppm) | 158 | 6 | 152 | 163 | Borate / Peroxide Fusion ICP |
| Dy2O3, Dysprosium(III) oxide (ppm) | 181 | 6 | 174 | 187 | Borate / Peroxide Fusion ICP |
| Er, Erbium (ppm) | 33.8 | 2.32 | 31.9 | 35.7 | Borate / Peroxide Fusion ICP |
| Er2O3, Erbium(III) oxide (ppm) | 38.6 | 2.65 | 36.5 | 40.8 | Borate / Peroxide Fusion ICP |
| Eu, Europium (ppm) | 292 | 14 | 280 | 303 | Borate / Peroxide Fusion ICP |
| Eu2O3, Europium(III) oxide (ppm) | 338 | 16 | 325 | 351 | Borate / Peroxide Fusion ICP |
| Fe, Iron (wt.%) | 33.42 | 0.758 | 32.22 | 34.62 | Borate / Peroxide Fusion ICP |
| Fe2O3, Iron(III) oxide (wt.%) | 47.78 | 1.084 | 46.07 | 49.49 | Borate / Peroxide Fusion ICP |
| Gd, Gadolinium (ppm) | 600 | 28 | 574 | 627 | Borate / Peroxide Fusion ICP |
| Gd2O3, Gadolinium(III) oxide (ppm) | 692 | 32 | 661 | 723 | Borate / Peroxide Fusion ICP |
| Hf, Hafnium (ppm) | 10.6 | 0.61 | 9.4 | 11.7 | Borate / Peroxide Fusion ICP |
| HfO2, Hafnium dioxide (ppm) | 12.5 | 0.72 | 11.1 | 13.8 | Borate / Peroxide Fusion ICP |
| Ho, Holmium (ppm) | 18.7 | 0.77 | 18.0 | 19.4 | Borate / Peroxide Fusion ICP |
| Ho2O3, Holmium(III) oxide (ppm) | 21.3 | 0.92 | 20.4 | 22.2 | Borate / Peroxide Fusion ICP |
| In, Indium (ppm) | 1.75 | 0.080 | 1.54 | 1.95 | Borate / Peroxide Fusion ICP |
| La, Lanthanum (wt.%) | 1.10 | 0.048 | 1.06 | 1.15 | Borate / Peroxide Fusion ICP |
| La2O3, Lanthanum(III) oxide (wt.%) | 1.29 | 0.056 | 1.24 | 1.34 | Borate / Peroxide Fusion ICP |
| Lu, Lutetium (ppm) | 1.39 | 0.075 | 1.24 | 1.55 | Borate / Peroxide Fusion ICP |
| Lu2O3, Lutetium(III) oxide (ppm) | 1.58 | 0.085 | 1.40 | 1.76 | Borate / Peroxide Fusion ICP |
| Mg, Magnesium (wt.%) | 0.689 | 0.033 | 0.656 | 0.722 | Borate / Peroxide Fusion ICP |
| MgO, Magnesium oxide (wt.%) | 1.14 | 0.054 | 1.09 | 1.20 | Borate / Peroxide Fusion ICP |
| Mn, Manganese (wt.%) | 0.255 | 0.013 | 0.242 | 0.267 | Borate / Peroxide Fusion ICP |
| MnO, Manganese oxide (wt.%) | 0.329 | 0.016 | 0.313 | 0.344 | Borate / Peroxide Fusion ICP |
| Mo, Molybdenum (ppm) | 68 | 4.6 | 60 | 75 | Borate / Peroxide Fusion ICP |
| Nb, Niobium (wt.%) | 0.182 | 0.016 | 0.170 | 0.193 | Borate / Peroxide Fusion ICP |
| Nd, Neodymium (wt.%) | 0.936 | 0.056 | 0.894 | 0.978 | Borate / Peroxide Fusion ICP |
| Nd2O3, Neodymium(III) oxide (wt.%) | 1.09 | 0.066 | 1.04 | 1.14 | Borate / Peroxide Fusion ICP |
| Ni, Nickel (ppm) | 66 | 9 | 56 | 76 | Borate / Peroxide Fusion ICP |
| P, Phosphorus (wt.%) | 1.24 | 0.076 | 1.09 | 1.39 | Borate / Peroxide Fusion ICP |
| P2O5, Phosphorus(V) oxide (wt.%) | 2.84 | 0.174 | 2.50 | 3.18 | Borate / Peroxide Fusion ICP |
| Pb, Lead (ppm) | 178 | 19 | 158 | 197 | Borate / Peroxide Fusion ICP |
| Pr, Praseodymium (wt.%) | 0.238 | 0.009 | 0.227 | 0.248 | Borate / Peroxide Fusion ICP |
| Pr6O11, Praseodymium(III,IV) oxide (wt.%) | 0.287 | 0.011 | 0.274 | 0.300 | Borate / Peroxide Fusion ICP |
| Rb, Rubidium (ppm) | 3.98 | 0.52 | 3.17 | 4.79 | Borate / Peroxide Fusion ICP |
| S, Sulphur (wt.%) | 0.096 | 0.008 | 0.082 | 0.110 | Borate / Peroxide Fusion ICP |
| Sc, Scandium (ppm) | 125 | 11 | 112 | 138 | Borate / Peroxide Fusion ICP |
| Si, Silicon (wt.%) | 8.40 | 0.564 | 7.68 | 9.11 | Borate / Peroxide Fusion ICP |
| SiO2, Silicon dioxide (wt.%) | 17.96 | 1.207 | 16.42 | 19.49 | Borate / Peroxide Fusion ICP |
| Sm, Samarium (wt.%) | 0.131 | 0.007 | 0.125 | 0.138 | Borate / Peroxide Fusion ICP |
| Sm2O3, Samarium(III) oxide (wt.%) | 0.152 | 0.008 | 0.145 | 0.159 | Borate / Peroxide Fusion ICP |
| Sn, Tin (ppm) | 40.4 | 2.33 | 37.8 | 43.0 | Borate / Peroxide Fusion ICP |
| Sr, Strontium (wt.%) | 0.182 | 0.010 | 0.172 | 0.191 | Borate / Peroxide Fusion ICP |
| Ta, Tantalum (ppm) | 22.8 | 1.22 | 21.8 | 23.9 | Borate / Peroxide Fusion ICP |
| Tb, Terbium (ppm) | 48.2 | 2.80 | 45.8 | 50.7 | Borate / Peroxide Fusion ICP |
| Tb4O7, Terbium(III,IV) oxide (ppm) | 57 | 3.3 | 54 | 60 | Borate / Peroxide Fusion ICP |
| Th, Thorium (ppm) | 470 | 22 | 452 | 489 | Borate / Peroxide Fusion ICP |
| Ti, Titanium (wt.%) | 1.76 | 0.048 | 1.69 | 1.82 | Borate / Peroxide Fusion ICP |
| TiO2, Titanium dioxide (wt.%) | 2.93 | 0.080 | 2.82 | 3.04 | Borate / Peroxide Fusion ICP |
| Tm, Thulium (ppm) | 3.15 | 0.229 | 2.95 | 3.36 | Borate / Peroxide Fusion ICP |
| Tm2O3, Thulium(III) oxide (ppm) | 3.59 | 0.256 | 3.37 | 3.81 | Borate / Peroxide Fusion ICP |
| U, Uranium (ppm) | 15.8 | 0.48 | 15.2 | 16.5 | Borate / Peroxide Fusion ICP |
| V, Vanadium (ppm) | 203 | 18 | 186 | 219 | Borate / Peroxide Fusion ICP |
| V2O5, Vanadium(V) oxide (ppm) | 362 | 32 | 333 | 391 | Borate / Peroxide Fusion ICP |
| Y, Yttrium (ppm) | 389 | 19 | 373 | 404 | Borate / Peroxide Fusion ICP |
| Y2O3, Yttrium(III) oxide (ppm) | 494 | 24 | 474 | 513 | Borate / Peroxide Fusion ICP |
| Yb, Ytterbium (ppm) | 13.5 | 0.60 | 12.6 | 14.4 | Borate / Peroxide Fusion ICP |
| Yb2O3, Ytterbium(III) oxide (ppm) | 15.5 | 0.89 | 14.4 | 16.6 | Borate / Peroxide Fusion ICP |
| Zn, Zinc (wt.%) | 0.101 | 0.007 | 0.095 | 0.107 | Borate / Peroxide Fusion ICP |
| Zr, Zirconium (ppm) | 420 | 23 | 390 | 451 | Borate / Peroxide Fusion ICP |
| Al2O3, Aluminium(III) oxide (wt.%) | 8.05 | 0.257 | 7.84 | 8.26 | Borate Fusion XRF |
| BaO, Barium oxide (wt.%) | 0.177 | 0.008 | 0.165 | 0.189 | Borate Fusion XRF |
| CaO, Calcium oxide (wt.%) | 1.01 | 0.038 | 0.98 | 1.05 | Borate Fusion XRF |
| CeO2, Cerium(IV) oxide (wt.%) | 1.79 | 0.035 | 1.76 | 1.82 | Borate Fusion XRF |
| Cr2O3, Chromium(III) oxide (ppm) | 383 | 67 | 298 | 469 | Borate Fusion XRF |
| Eu2O3, Europium(III) oxide (ppm) | 318 | 97 | 234 | 401 | Borate Fusion XRF |
| Fe2O3, Iron(III) oxide (wt.%) | 47.84 | 1.106 | 46.87 | 48.81 | Borate Fusion XRF |
| Gd2O3, Gadolinium(III) oxide (ppm) | 687 | 101 | 569 | 805 | Borate Fusion XRF |
| Ho2O3, Holmium(III) oxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| K2O, Potassium oxide (wt.%) | 0.089 | 0.012 | 0.077 | 0.101 | Borate Fusion XRF |
| La2O3, Lanthanum(III) oxide (wt.%) | 1.32 | 0.032 | 1.30 | 1.35 | Borate Fusion XRF |
| Lu2O3, Lutetium(III) oxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| MgO, Magnesium oxide (wt.%) | 1.18 | 0.040 | 1.15 | 1.22 | Borate Fusion XRF |
| MnO, Manganese oxide (wt.%) | 0.347 | 0.015 | 0.330 | 0.364 | Borate Fusion XRF |
| Nb2O5, Niobium(V) oxide (wt.%) | 0.250 | 0.008 | 0.240 | 0.261 | Borate Fusion XRF |
| Nd2O3, Neodymium(III) oxide (wt.%) | 1.09 | 0.028 | 1.07 | 1.11 | Borate Fusion XRF |
| P2O5, Phosphorus(V) oxide (wt.%) | 2.90 | 0.143 | 2.80 | 3.01 | Borate Fusion XRF |
| Pr6O11, Praseodymium(III,IV) oxide (wt.%) | 0.293 | 0.019 | 0.276 | 0.310 | Borate Fusion XRF |
| SiO2, Silicon dioxide (wt.%) | 18.26 | 0.553 | 17.81 | 18.70 | Borate Fusion XRF |
| Sm2O3, Samarium(III) oxide (wt.%) | 0.156 | 0.015 | 0.143 | 0.170 | Borate Fusion XRF |
| SnO2, Tin dioxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| SrO, Strontium oxide (wt.%) | 0.220 | 0.018 | 0.196 | 0.244 | Borate Fusion XRF |
| Tb4O7, Terbium(III,IV) oxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| ThO2, Thorium dioxide (ppm) | 526 | 36 | 482 | 570 | Borate Fusion XRF |
| TiO2, Titanium dioxide (wt.%) | 2.96 | 0.071 | 2.89 | 3.02 | 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) | 392 | 75 | 253 | 531 | Borate Fusion XRF |
| Y2O3, Yttrium(III) oxide (ppm) | 491 | 40 | 409 | 572 | Borate Fusion XRF |
| Yb2O3, Ytterbium(III) oxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| ZrO2, Zirconium dioxide (ppm) | 559 | 41 | 522 | 596 | Borate Fusion XRF |
| LOI1000, Loss on ignition @1000 °C (wt.%) | 10.43 | 1.15 | 9.80 | 11.06 | Thermogravimetry |
Product Specifications
State
oxide
Matrix
lateritic
Mineralisation
carbonatite
Availability
available
Certified Reference Values
| Analyte | Certified Value | Uncertainty (1SD) | 95% Confidence Low | 95% Confidence High | Method |
|---|---|---|---|---|---|
| Dy - Dysprosium (ppm) | 148 | - | - | - | 4-Acid Digestion |
| Er - Erbium (ppm) | 31.6 | - | - | - | 4-Acid Digestion |
| Eu - Europium (ppm) | 281 | - | - | - | 4-Acid Digestion |
| Gd - Gadolinium (ppm) | 582 | - | - | - | 4-Acid Digestion |
| Ho - Holmium (ppm) | 17.3 | - | - | - | 4-Acid Digestion |
| Tb - Terbium (ppm) | 49.2 | - | - | - | 4-Acid Digestion |
| Tm - Thulium (ppm) | 2.84 | - | - | - | 4-Acid Digestion |
| Yb - Ytterbium (ppm) | 13.7 | - | - | - | 4-Acid Digestion |
SD = Standard Deviation | CL = 95% Confidence Limits
Methods: AR = Aqua Regia, 4-Acid = 4-Acid Digestion, LBF = Lithium Borate Fusion, FA/AAS = Fire Assay with Atomic Absorption, LECO = LECO Combustion Analysis
Need Assistance?
Contact our technical team for custom orders, bulk pricing, or analytical support.
Contact Us