Specifications
-
CRM State:
-
Matrix:
-
Mineralisation:
OREAS 471
OREAS 471 is a certified reference material (CRM) produced from a blend of
clay-hosted rare earth element (REE) ores, mudstone, silica and kaolin. The
REE-bearing ores were sourced from the Jupiter deposit in the Laverton region of
Western Australia.
Mineralisation occurs within a deeply weathered regolith
developed over an underlying carbonatite–alkaline volcanic sequence. Supergene
processes have resulted in enrichment of total rare earth oxides (TREO),
including a significant proportion of magnet rare earth oxides (MREO), notably
neodymium and praseodymium, with subordinate dysprosium and terbium. The CRM
matrix is quartz-rich and comprises abundant mica–illite and kaolinite-group
clays, with additional smectite/vermiculite-type clay minerals. Minor iron
oxides (goethite and magnetite), traces of hematite and anatase are present as
accessory phases. Rare earth elements are interpreted to occur predominantly
within fine-grained secondary phases associated with the clay fraction.
Twenty-nine commercial analytical laboratories participated in the program to certify the elements reported below using the following methods:
- Lithium borate or sodium peroxide fusion with full suite ICP-OES and ICP-MS elemental package
- Thermogravimetric LOI at 1000 °C
- Borate/Peroxide Fusion – Full ICP-OES and MS elemental suites
- 4-Acid – Full ICP-OES and MS elemental suites
Homogeneity was evaluated using 12 subsamples analysed by oxidising fusion with lithium borate fusion with ICP-MS finish. ANOVA was applied to duplicates from six 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 |
|---|---|---|---|---|---|
| Al2O3, Aluminium(III) oxide (wt.%) | 16.33 | 0.402 | 15.97 | 16.68 | Borate / Peroxide Fusion ICP |
| Ba, Barium (wt.%) | 0.245 | 0.008 | 0.237 | 0.253 | Borate / Peroxide Fusion ICP |
| Be, Beryllium (ppm) | 1.98 | 0.045 | 1.89 | 2.07 | Borate / Peroxide Fusion ICP |
| Bi, Bismuth (ppm) | 0.30 | 0.04 | 0.23 | 0.38 | Borate / Peroxide Fusion ICP |
| CaO, Calcium oxide (wt.%) | 1.23 | 0.048 | 1.19 | 1.27 | Borate / Peroxide Fusion ICP |
| CeO2, Cerium(IV) oxide (ppm) | 251 | 6 | 242 | 260 | Borate / Peroxide Fusion ICP |
| Co, Cobalt (ppm) | 15.4 | 0.70 | 14.4 | 16.3 | Borate / Peroxide Fusion ICP |
| Cr, Chromium (ppm) | 62 | 3.7 | 56 | 68 | Borate / Peroxide Fusion ICP |
| Cs, Caesium (ppm) | 6.97 | 0.374 | 6.57 | 7.37 | Borate / Peroxide Fusion ICP |
| Cu, Copper (ppm) | 35.7 | 8.3 | 28.5 | 42.9 | Borate / Peroxide Fusion ICP |
| Dy2O3, Dysprosium(III) oxide (ppm) | 5.81 | 0.254 | 5.44 | 6.18 | Borate / Peroxide Fusion ICP |
| Er2O3, Erbium(III) oxide (ppm) | 2.78 | 0.144 | 2.59 | 2.97 | Borate / Peroxide Fusion ICP |
| Eu2O3, Europium(III) oxide (ppm) | 3.11 | 0.202 | 2.89 | 3.33 | Borate / Peroxide Fusion ICP |
| Fe2O3, Iron(III) oxide (wt.%) | 6.17 | 0.137 | 6.01 | 6.34 | Borate / Peroxide Fusion ICP |
| Ga, Gallium (ppm) | 21.5 | 1.28 | 20.2 | 22.8 | Borate / Peroxide Fusion ICP |
| Gd2O3, Gadolinium(III) oxide (ppm) | 9.48 | 0.562 | 9.03 | 9.94 | Borate / Peroxide Fusion ICP |
| Hf, Hafnium (ppm) | 7.93 | 0.523 | 7.35 | 8.51 | Borate / Peroxide Fusion ICP |
| Ho2O3, Holmium(III) oxide (ppm) | 1.03 | 0.041 | 0.97 | 1.09 | Borate / Peroxide Fusion ICP |
| In, Indium (ppm) | < 0.10 | IND | IND | IND | Borate / Peroxide Fusion ICP |
| K2O, Potassium oxide (wt.%) | 3.28 | 0.084 | 3.19 | 3.36 | Borate / Peroxide Fusion ICP |
| La2O3, Lanthanum(III) oxide (ppm) | 124 | 4 | 119 | 128 | Borate / Peroxide Fusion ICP |
| Li, Lithium (ppm) | 16.3 | 1.47 | 13.5 | 19.1 | Borate / Peroxide Fusion ICP |
| Lu2O3, Lutetium(III) oxide (ppm) | 0.37 | 0.032 | 0.31 | 0.43 | Borate / Peroxide Fusion ICP |
| MgO, Magnesium oxide (wt.%) | 1.30 | 0.028 | 1.27 | 1.33 | Borate / Peroxide Fusion ICP |
| MnO, Manganese oxide (wt.%) | 0.050 | 0.001 | 0.049 | 0.052 | Borate / Peroxide Fusion ICP |
| Mo, Molybdenum (ppm) | 2.33 | 0.62 | 1.92 | 2.73 | Borate / Peroxide Fusion ICP |
| Na2O, Sodium oxide (wt.%) | 1.22 | 0.040 | 1.18 | 1.27 | Borate / Peroxide Fusion ICP |
| Nb, Niobium (ppm) | 12.7 | 0.95 | 11.9 | 13.5 | Borate / Peroxide Fusion ICP |
| Nd2O3, Neodymium(III) oxide (ppm) | 96 | 3.2 | 93 | 100 | Borate / Peroxide Fusion ICP |
| Ni, Nickel (ppm) | 31.8 | 3.7 | 24.6 | 39.1 | Borate / Peroxide Fusion ICP |
| P2O5, Phosphorus(V) oxide (wt.%) | 0.322 | 0.011 | 0.307 | 0.336 | Borate / Peroxide Fusion ICP |
| Pb, Lead (ppm) | 33.0 | 2.15 | 30.5 | 35.5 | Borate / Peroxide Fusion ICP |
| Pr6O11, Praseodymium(III,IV) oxide (ppm) | 27.7 | 0.74 | 26.6 | 28.7 | Borate / Peroxide Fusion ICP |
| Rb, Rubidium (ppm) | 117 | 4 | 113 | 122 | Borate / Peroxide Fusion ICP |
| S, Sulphur (wt.%) | 0.036 | 0.010 | 0.026 | 0.047 | Borate / Peroxide Fusion ICP |
| Sb, Antimony (ppm) | 0.93 | 0.14 | 0.75 | 1.11 | Borate / Peroxide Fusion ICP |
| Sc, Scandium (ppm) | 13.3 | 1.02 | 12.4 | 14.3 | Borate / Peroxide Fusion ICP |
| SiO2, Silicon dioxide (wt.%) | 63.34 | 0.726 | 62.22 | 64.47 | Borate / Peroxide Fusion ICP |
| Sm2O3, Samarium(III) oxide (ppm) | 14.4 | 0.77 | 13.6 | 15.1 | Borate / Peroxide Fusion ICP |
| Sn, Tin (ppm) | 3.17 | 0.48 | 2.45 | 3.89 | Borate / Peroxide Fusion ICP |
| Sr, Strontium (ppm) | 445 | 13 | 431 | 459 | Borate / Peroxide Fusion ICP |
| Ta, Tantalum (ppm) | 0.88 | 0.10 | 0.78 | 0.98 | Borate / Peroxide Fusion ICP |
| Tb4O7, Terbium(III,IV) oxide (ppm) | 1.19 | 0.087 | 1.09 | 1.28 | Borate / Peroxide Fusion ICP |
| Th, Thorium (ppm) | 22.3 | 0.74 | 21.5 | 23.1 | Borate / Peroxide Fusion ICP |
| Ti, Titanium (wt.%) | 0.566 | 0.026 | 0.543 | 0.588 | Borate / Peroxide Fusion ICP |
| Tl, Thallium (ppm) | 0.64 | 0.10 | 0.54 | 0.74 | Borate / Peroxide Fusion ICP |
| Tm2O3, Thulium(III) oxide (ppm) | 0.39 | 0.032 | 0.36 | 0.42 | Borate / Peroxide Fusion ICP |
| TREO, Total Rare Earth Oxides (ppm) | 537 | 11 | 521 | 553 | Borate / Peroxide Fusion ICP |
| TREO+Y2O3, Total Rare Earth Oxides + Yttrium oxide (ppm) | 571 | 15 | 556 | 587 | Borate / Peroxide Fusion ICP |
| U, Uranium (ppm) | 2.61 | 0.103 | 2.45 | 2.76 | Borate / Peroxide Fusion ICP |
| V, Vanadium (ppm) | 104 | 6 | 99 | 109 | Borate / Peroxide Fusion ICP |
| W, Tungsten (ppm) | 4.29 | 0.324 | 3.77 | 4.81 | Borate / Peroxide Fusion ICP |
| Y2O3, Yttrium(III) oxide (ppm) | 31.7 | 1.17 | 30.5 | 33.0 | Borate / Peroxide Fusion ICP |
| Yb2O3, Ytterbium(III) oxide (ppm) | 2.46 | 0.158 | 2.31 | 2.60 | Borate / Peroxide Fusion ICP |
| Zn, Zinc (ppm) | 78 | 5.0 | 73 | 84 | Borate / Peroxide Fusion ICP |
| Zr, Zirconium (ppm) | 316 | 20 | 298 | 333 | Borate / Peroxide Fusion ICP |
| Al2O3, Aluminium(III) oxide (wt.%) | 16.41 | 0.246 | 16.21 | 16.61 | Borate Fusion XRF |
| BaO, Barium oxide (wt.%) | 0.272 | 0.017 | 0.253 | 0.291 | Borate Fusion XRF |
| CaO, Calcium oxide (wt.%) | 1.21 | 0.019 | 1.18 | 1.23 | Borate Fusion XRF |
| CeO2, Cerium(IV) oxide (ppm) | 243 | 63 | 137 | 350 | Borate Fusion XRF |
| Dy2O3, Dysprosium(III) oxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| Eu2O3, Europium(III) oxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| Fe2O3, Iron(III) oxide (wt.%) | 6.20 | 0.107 | 6.11 | 6.30 | Borate Fusion XRF |
| Gd2O3, Gadolinium(III) oxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| Ho2O3, Holmium(III) oxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| K2O, Potassium oxide (wt.%) | 3.23 | 0.051 | 3.19 | 3.28 | Borate Fusion XRF |
| La2O3, Lanthanum(III) oxide (ppm) | 145 | 44 | 113 | 178 | Borate Fusion XRF |
| Lu2O3, Lutetium(III) oxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| MgO, Magnesium oxide (wt.%) | 1.30 | 0.021 | 1.28 | 1.32 | Borate Fusion XRF |
| MnO, Manganese oxide (wt.%) | 0.048 | 0.003 | 0.045 | 0.052 | Borate Fusion XRF |
| Na2O, Sodium oxide (wt.%) | 1.22 | 0.044 | 1.18 | 1.27 | Borate Fusion XRF |
| P2O5, Phosphorus(V) oxide (wt.%) | 0.324 | 0.011 | 0.313 | 0.335 | Borate Fusion XRF |
| Pr6O11, Praseodymium(III,IV) oxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| SiO2, Silicon dioxide (wt.%) | 63.35 | 0.889 | 62.64 | 64.06 | Borate Fusion XRF |
| Sm2O3, Samarium(III) oxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| SO3, Sulphur trioxide (wt.%) | 0.068 | 0.006 | 0.057 | 0.079 | Borate Fusion XRF |
| Tb4O7, Terbium(III,IV) oxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| TiO2, Titanium dioxide (wt.%) | 0.942 | 0.026 | 0.920 | 0.965 | Borate Fusion XRF |
| Tm2O3, Thulium(III) oxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| V2O5, Vanadium(V) oxide (ppm) | 175 | 33 | 134 | 215 | Borate Fusion XRF |
| Yb2O3, Ytterbium(III) oxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| ZnO, Zinc oxide (ppm) | 100 | 23 | 74 | 126 | Borate Fusion XRF |
| ZrO2, Zirconium dioxide (ppm) | 403 | 43 | 305 | 500 | Borate Fusion XRF |
| LOI1000, Loss on ignition @1000 °C (wt.%) | 4.73 | 0.53 | 4.44 | 5.01 | Thermogravimetry |
| Al, Aluminium (wt.%) | 8.46 | 0.241 | 8.14 | 8.78 | 4-Acid Digestion |
| As, Arsenic (ppm) | 5.26 | 1.15 | 4.43 | 6.10 | 4-Acid Digestion |
| Ba, Barium (wt.%) | 0.247 | 0.011 | 0.238 | 0.257 | 4-Acid Digestion |
| Be, Beryllium (ppm) | 1.99 | 0.107 | 1.88 | 2.10 | 4-Acid Digestion |
| Bi, Bismuth (ppm) | 0.30 | 0.019 | 0.28 | 0.32 | 4-Acid Digestion |
| Ca, Calcium (wt.%) | 0.862 | 0.025 | 0.832 | 0.891 | 4-Acid Digestion |
| Ce, Cerium (ppm) | 206 | 13 | 197 | 215 | 4-Acid Digestion |
| Co, Cobalt (ppm) | 15.5 | 0.72 | 14.8 | 16.3 | 4-Acid Digestion |
| Cr, Chromium (ppm) | 51 | 4.3 | 47 | 54 | 4-Acid Digestion |
| Cs, Caesium (ppm) | 6.99 | 0.323 | 6.74 | 7.23 | 4-Acid Digestion |
| Cu, Copper (ppm) | 32.7 | 1.21 | 31.5 | 33.9 | 4-Acid Digestion |
| Dy, Dysprosium (ppm) | 4.85 | 0.313 | 4.60 | 5.11 | 4-Acid Digestion |
| Er, Erbium (ppm) | 2.30 | 0.153 | 2.19 | 2.41 | 4-Acid Digestion |
| Eu, Europium (ppm) | 2.63 | 0.170 | 2.50 | 2.76 | 4-Acid Digestion |
| Fe, Iron (wt.%) | 4.23 | 0.111 | 4.08 | 4.39 | 4-Acid Digestion |
| Ga, Gallium (ppm) | 21.3 | 0.82 | 20.4 | 22.2 | 4-Acid Digestion |
| Gd, Gadolinium (ppm) | 8.20 | 0.696 | 7.75 | 8.66 | 4-Acid Digestion |
| Hf, Hafnium (ppm) | 4.28 | 0.290 | 4.03 | 4.53 | 4-Acid Digestion |
| Ho, Holmium (ppm) | 0.85 | 0.054 | 0.80 | 0.90 | 4-Acid Digestion |
| In, Indium (ppm) | 0.059 | 0.005 | 0.051 | 0.067 | 4-Acid Digestion |
| K, Potassium (wt.%) | 2.68 | 0.074 | 2.59 | 2.77 | 4-Acid Digestion |
| La, Lanthanum (ppm) | 103 | 7 | 98 | 108 | 4-Acid Digestion |
| Li, Lithium (ppm) | 16.4 | 0.62 | 15.6 | 17.1 | 4-Acid Digestion |
| Lu, Lutetium (ppm) | 0.30 | 0.014 | 0.28 | 0.32 | 4-Acid Digestion |
| Mg, Magnesium (wt.%) | 0.751 | 0.032 | 0.720 | 0.782 | 4-Acid Digestion |
| Mn, Manganese (wt.%) | 0.038 | 0.001 | 0.037 | 0.039 | 4-Acid Digestion |
| Mo, Molybdenum (ppm) | 2.07 | 0.079 | 1.96 | 2.18 | 4-Acid Digestion |
| Na, Sodium (wt.%) | 0.903 | 0.025 | 0.869 | 0.936 | 4-Acid Digestion |
| Nb, Niobium (ppm) | 12.1 | 0.70 | 11.5 | 12.7 | 4-Acid Digestion |
| Nd, Neodymium (ppm) | 82 | 4.5 | 78 | 86 | 4-Acid Digestion |
| Ni, Nickel (ppm) | 32.6 | 1.02 | 31.4 | 33.8 | 4-Acid Digestion |
| P, Phosphorus (wt.%) | 0.143 | 0.004 | 0.139 | 0.148 | 4-Acid Digestion |
| Pb, Lead (ppm) | 32.1 | 1.65 | 30.6 | 33.6 | 4-Acid Digestion |
| Pr, Praseodymium (ppm) | 23.1 | 1.59 | 22.0 | 24.3 | 4-Acid Digestion |
| Rb, Rubidium (ppm) | 119 | 7 | 114 | 125 | 4-Acid Digestion |
| Re, Rhenium (ppm) | < 0.002 | IND | IND | IND | 4-Acid Digestion |
| S, Sulphur (wt.%) | 0.030 | 0.001 | 0.029 | 0.031 | 4-Acid Digestion |
| Sb, Antimony (ppm) | 0.96 | 0.041 | 0.90 | 1.01 | 4-Acid Digestion |
| Sc, Scandium (ppm) | 12.7 | 0.74 | 12.1 | 13.3 | 4-Acid Digestion |
| Sm, Samarium (ppm) | 12.3 | 0.82 | 11.7 | 12.8 | 4-Acid Digestion |
| Sn, Tin (ppm) | 3.05 | 0.160 | 2.87 | 3.22 | 4-Acid Digestion |
| Sr, Strontium (ppm) | 442 | 11 | 429 | 456 | 4-Acid Digestion |
| Ta, Tantalum (ppm) | 0.79 | 0.09 | 0.73 | 0.85 | 4-Acid Digestion |
| Tb, Terbium (ppm) | 0.95 | 0.078 | 0.89 | 1.00 | 4-Acid Digestion |
| Th, Thorium (ppm) | 23.1 | 1.27 | 22.1 | 24.2 | 4-Acid Digestion |
| Ti, Titanium (wt.%) | 0.531 | 0.020 | 0.512 | 0.549 | 4-Acid Digestion |
| Tl, Thallium (ppm) | 0.68 | 0.052 | 0.64 | 0.72 | 4-Acid Digestion |
| Tm, Thulium (ppm) | 0.30 | 0.029 | 0.28 | 0.33 | 4-Acid Digestion |
| U, Uranium (ppm) | 2.44 | 0.158 | 2.31 | 2.57 | 4-Acid Digestion |
| V, Vanadium (ppm) | 102 | 3 | 98 | 106 | 4-Acid Digestion |
| W, Tungsten (ppm) | 3.99 | 0.220 | 3.80 | 4.18 | 4-Acid Digestion |
| Y, Yttrium (ppm) | 22.6 | 2.04 | 21.5 | 23.6 | 4-Acid Digestion |
| Yb, Ytterbium (ppm) | 1.96 | 0.132 | 1.83 | 2.09 | 4-Acid Digestion |
| Zn, Zinc (ppm) | 77 | 2.5 | 73 | 80 | 4-Acid Digestion |
| Zr, Zirconium (ppm) | 168 | 9 | 160 | 176 | 4-Acid Digestion |
Downloads
Certificate DataPack SDS NRAM (226 KB)Stock
-
Pack SizePriceStock Level
-
10g Sachet$6.6039,000 +
-
500g Jar$235.00740 +
Specifications
-
CRM State:
-
Matrix:
-
Mineralisation:
-
CRM Group(s):