Specifications
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CRM State:
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Matrix:
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Mineralisation:
OREAS 24b
Reference material OREAS 24b has been prepared from barren I-Type hornblende-bearing granodiorite sourced from the Late Devonian Lysterfield granodiorite complex located in the Melbourne province of Australia. Ten commercial analytical laboratories participated in the program to characterise the elements reported in Tables 1 to 6 (please download certificate). The elements listed below are only a subset of the certified values.
The following methods were employed:
- Lithium borate fusion for full suite X-ray fluorescence (9 laboratories)
- Sodium peroxide fusion or lithium borate fusion for full suite ICP-OES and ICP-MS (10 laboratories)
- Four acid digestion for full suite ICP-OES and ICP-MS (9 laboratories)
- Aqua regia digestion for full suite ICP-OES and ICP-MS (9 laboratories)
- Fire assay with ICP-OES and ICP-MS for Au, Pd and Pt (9 laboratories)
- Infra-red combustion furnace for C and S (9 laboratories)
- Thermogravimetry for LOI (10 laboratories)
| Analyte | Certified Value | 1SD | 95% Confidence Limits Low | 95% Confidence Limits High | Method |
|---|---|---|---|---|---|
| Au, Gold (ppb) | < 3 | IND | IND | IND | Pb Fire Assay |
| Cu, Copper (ppm) | 38.0 | 1.59 | 36.9 | 39.0 | 4-Acid Digestion |
| Pb, Lead (ppm) | 23.1 | 1.38 | 22.1 | 24.2 | 4-Acid Digestion |
| Al2O3, Aluminium(III) oxide (wt.%) | 15.15 | 0.094 | 15.09 | 15.20 | Borate Fusion XRF |
| BaO, Barium oxide (ppm) | 819 | 45 | 780 | 859 | Borate Fusion XRF |
| CaO, Calcium oxide (wt.%) | 1.47 | 0.023 | 1.46 | 1.49 | Borate Fusion XRF |
| Cr2O3, Chromium(III) oxide (ppm) | 201 | 7 | 199 | 203 | Borate Fusion XRF |
| Fe2O3, Iron(III) oxide (wt.%) | 6.35 | 0.058 | 6.31 | 6.39 | Borate Fusion XRF |
| K2O, Potassium oxide (wt.%) | 3.39 | 0.026 | 3.37 | 3.41 | Borate Fusion XRF |
| MgO, Magnesium oxide (wt.%) | 2.75 | 0.029 | 2.73 | 2.78 | Borate Fusion XRF |
| MnO, Manganese oxide (wt.%) | 0.059 | 0.002 | 0.057 | 0.061 | Borate Fusion XRF |
| Na2O, Sodium oxide (wt.%) | 1.15 | 0.024 | 1.13 | 1.17 | Borate Fusion XRF |
| P2O5, Phosphorus(V) oxide (wt.%) | 0.161 | 0.005 | 0.156 | 0.166 | Borate Fusion XRF |
| SiO2, Silicon dioxide (wt.%) | 66.00 | 0.263 | 65.85 | 66.15 | Borate Fusion XRF |
| TiO2, Titanium dioxide (wt.%) | 0.798 | 0.019 | 0.784 | 0.812 | Borate Fusion XRF |
| LOI1000, Loss On Ignition @1000 °C (wt.%) | 2.46 | 0.169 | 2.34 | 2.59 | Thermogravimetry |
| Al, Aluminium (wt.%) | 7.81 | 0.180 | 7.73 | 7.89 | Borate / Peroxide Fusion ICP |
| Ba, Barium (ppm) | 739 | 29 | 719 | 759 | Borate / Peroxide Fusion ICP |
| Be, Beryllium (ppm) | 2.95 | 0.37 | 2.82 | 3.07 | Borate / Peroxide Fusion ICP |
| Ca, Calcium (wt.%) | 1.06 | 0.041 | 1.03 | 1.08 | Borate / Peroxide Fusion ICP |
| Ce, Cerium (ppm) | 86 | 2.5 | 84 | 87 | Borate / Peroxide Fusion ICP |
| Co, Cobalt (ppm) | 16.9 | 0.83 | 16.3 | 17.6 | Borate / Peroxide Fusion ICP |
| Cr, Chromium (ppm) | 142 | 13 | 133 | 151 | Borate / Peroxide Fusion ICP |
| Cs, Caesium (ppm) | 10.5 | 0.43 | 10.2 | 10.8 | Borate / Peroxide Fusion ICP |
| Dy, Dysprosium (ppm) | 5.83 | 0.250 | 5.71 | 5.96 | Borate / Peroxide Fusion ICP |
| Er, Erbium (ppm) | 3.41 | 0.130 | 3.35 | 3.48 | Borate / Peroxide Fusion ICP |
| Eu, Europium (ppm) | 1.39 | 0.086 | 1.35 | 1.44 | Borate / Peroxide Fusion ICP |
| Fe, Iron (wt.%) | 4.45 | 0.124 | 4.39 | 4.52 | Borate / Peroxide Fusion ICP |
| Ga, Gallium (ppm) | 20.2 | 0.87 | 19.6 | 20.8 | Borate / Peroxide Fusion ICP |
| Gd, Gadolinium (ppm) | 6.27 | 0.374 | 5.97 | 6.56 | Borate / Peroxide Fusion ICP |
| Hf, Hafnium (ppm) | 6.15 | 0.461 | 5.84 | 6.45 | Borate / Peroxide Fusion ICP |
| Ho, Holmium (ppm) | 1.17 | 0.063 | 1.14 | 1.21 | Borate / Peroxide Fusion ICP |
| K, Potassium (wt.%) | 2.74 | 0.051 | 2.72 | 2.76 | Borate / Peroxide Fusion ICP |
| La, Lanthanum (ppm) | 44.0 | 1.54 | 43.1 | 44.9 | Borate / Peroxide Fusion ICP |
| Li, Lithium (ppm) | 52 | 3.2 | 48 | 56 | Borate / Peroxide Fusion ICP |
| Lu, Lutetium (ppm) | 0.49 | 0.045 | 0.45 | 0.52 | Borate / Peroxide Fusion ICP |
| Mg, Magnesium (wt.%) | 1.62 | 0.043 | 1.59 | 1.64 | Borate / Peroxide Fusion ICP |
| Mn, Manganese (wt.%) | 0.046 | 0.000 | 0.046 | 0.047 | Borate / Peroxide Fusion ICP |
| Na, Sodium (wt.%) | 0.824 | 0.022 | 0.795 | 0.852 | Borate / Peroxide Fusion ICP |
| Nb, Niobium (ppm) | 16.0 | 0.65 | 15.5 | 16.5 | Borate / Peroxide Fusion ICP |
| Nd, Neodymium (ppm) | 38.7 | 0.79 | 38.2 | 39.2 | Borate / Peroxide Fusion ICP |
| Ni, Nickel (ppm) | 61 | 7 | 57 | 66 | Borate / Peroxide Fusion ICP |
| Pr, Praseodymium (ppm) | 10.2 | 0.37 | 9.9 | 10.4 | Borate / Peroxide Fusion ICP |
| Rb, Rubidium (ppm) | 161 | 3 | 158 | 164 | Borate / Peroxide Fusion ICP |
| S, Sulphur (wt.%) | 0.203 | 0.034 | 0.167 | 0.240 | Borate / Peroxide Fusion ICP |
| Sc, Scandium (ppm) | 14.1 | 0.71 | 13.2 | 15.0 | Borate / Peroxide Fusion ICP |
| Si, Silicon (wt.%) | 31.12 | 1.055 | 30.35 | 31.89 | Borate / Peroxide Fusion ICP |
| Sm, Samarium (ppm) | 7.17 | 0.283 | 7.03 | 7.32 | Borate / Peroxide Fusion ICP |
| Sn, Tin (ppm) | 4.65 | 0.68 | 4.18 | 5.12 | Borate / Peroxide Fusion ICP |
| Sr, Strontium (ppm) | 125 | 4 | 122 | 127 | Borate / Peroxide Fusion ICP |
| Ta, Tantalum (ppm) | 1.32 | 0.083 | 1.27 | 1.37 | Borate / Peroxide Fusion ICP |
| Tb, Terbium (ppm) | 0.98 | 0.045 | 0.95 | 1.01 | Borate / Peroxide Fusion ICP |
| Th, Thorium (ppm) | 16.5 | 0.65 | 16.1 | 16.9 | Borate / Peroxide Fusion ICP |
| Ti, Titanium (wt.%) | 0.481 | 0.017 | 0.471 | 0.491 | Borate / Peroxide Fusion ICP |
| Tl, Thallium (ppm) | 0.91 | 0.10 | 0.81 | 1.00 | Borate / Peroxide Fusion ICP |
| Tm, Thulium (ppm) | 0.50 | 0.029 | 0.48 | 0.52 | Borate / Peroxide Fusion ICP |
| U, Uranium (ppm) | 3.31 | 0.136 | 3.23 | 3.40 | Borate / Peroxide Fusion ICP |
| V, Vanadium (ppm) | 112 | 10 | 105 | 119 | Borate / Peroxide Fusion ICP |
| W, Tungsten (ppm) | 4.13 | 0.52 | 3.82 | 4.45 | Borate / Peroxide Fusion ICP |
| Y, Yttrium (ppm) | 32.5 | 1.53 | 31.5 | 33.5 | Borate / Peroxide Fusion ICP |
| Yb, Ytterbium (ppm) | 3.24 | 0.135 | 3.17 | 3.31 | Borate / Peroxide Fusion ICP |
| Zr, Zirconium (ppm) | 213 | 11 | 206 | 221 | Borate / Peroxide Fusion ICP |
| Al, Aluminium (wt.%) | 8.02 | 0.484 | 7.55 | 8.48 | 4-Acid Digestion |
| Ba, Barium (ppm) | 716 | 33 | 690 | 742 | 4-Acid Digestion |
| Be, Beryllium (ppm) | 2.92 | 0.47 | 2.53 | 3.32 | 4-Acid Digestion |
| Bi, Bismuth (ppm) | 0.68 | 0.063 | 0.64 | 0.72 | 4-Acid Digestion |
| Ca, Calcium (wt.%) | 1.08 | 0.040 | 1.04 | 1.12 | 4-Acid Digestion |
| Ce, Cerium (ppm) | 84 | 3.5 | 81 | 87 | 4-Acid Digestion |
| Co, Cobalt (ppm) | 16.9 | 1.19 | 16.3 | 17.4 | 4-Acid Digestion |
| Cr, Chromium (ppm) | 118 | 10 | 109 | 127 | 4-Acid Digestion |
| Cs, Caesium (ppm) | 10.7 | 0.41 | 10.3 | 11.1 | 4-Acid Digestion |
| Fe, Iron (wt.%) | 4.39 | 0.131 | 4.27 | 4.52 | 4-Acid Digestion |
| Ga, Gallium (ppm) | 20.1 | 0.82 | 19.5 | 20.7 | 4-Acid Digestion |
| Hf, Hafnium (ppm) | 3.90 | 0.54 | 3.44 | 4.37 | 4-Acid Digestion |
| K, Potassium (wt.%) | 2.81 | 0.110 | 2.72 | 2.89 | 4-Acid Digestion |
| La, Lanthanum (ppm) | 42.4 | 2.34 | 40.4 | 44.3 | 4-Acid Digestion |
| Li, Lithium (ppm) | 52 | 1.2 | 51 | 52 | 4-Acid Digestion |
| Mg, Magnesium (wt.%) | 1.65 | 0.054 | 1.59 | 1.70 | 4-Acid Digestion |
| Mn, Manganese (wt.%) | 0.044 | 0.002 | 0.043 | 0.046 | 4-Acid Digestion |
| Mo, Molybdenum (ppm) | 4.03 | 0.357 | 3.73 | 4.34 | 4-Acid Digestion |
| Na, Sodium (wt.%) | 0.846 | 0.025 | 0.825 | 0.866 | 4-Acid Digestion |
| Nb, Niobium (ppm) | 14.6 | 1.29 | 13.4 | 15.8 | 4-Acid Digestion |
| Ni, Nickel (ppm) | 60 | 4.1 | 57 | 64 | 4-Acid Digestion |
| P, Phosphorus (wt.%) | 0.069 | 0.005 | 0.065 | 0.074 | 4-Acid Digestion |
| Rb, Rubidium (ppm) | 164 | 9 | 156 | 171 | 4-Acid Digestion |
| S, Sulphur (wt.%) | 0.198 | 0.008 | 0.191 | 0.206 | 4-Acid Digestion |
| Sb, Antimony (ppm) | 1.00 | 0.045 | 0.97 | 1.02 | 4-Acid Digestion |
| Sc, Scandium (ppm) | 15.3 | 1.43 | 14.1 | 16.4 | 4-Acid Digestion |
| Sn, Tin (ppm) | 4.25 | 0.221 | 4.06 | 4.45 | 4-Acid Digestion |
| Sr, Strontium (ppm) | 124 | 11 | 115 | 133 | 4-Acid Digestion |
| Ta, Tantalum (ppm) | 1.23 | 0.22 | 1.02 | 1.43 | 4-Acid Digestion |
| Th, Thorium (ppm) | 16.4 | 1.11 | 15.5 | 17.3 | 4-Acid Digestion |
| Ti, Titanium (wt.%) | 0.468 | 0.018 | 0.447 | 0.490 | 4-Acid Digestion |
| Tl, Thallium (ppm) | 0.86 | 0.043 | 0.81 | 0.91 | 4-Acid Digestion |
| U, Uranium (ppm) | 3.06 | 0.093 | 2.98 | 3.13 | 4-Acid Digestion |
| V, Vanadium (ppm) | 108 | 4 | 104 | 112 | 4-Acid Digestion |
| W, Tungsten (ppm) | 3.64 | 0.47 | 3.27 | 4.01 | 4-Acid Digestion |
| Y, Yttrium (ppm) | 19.9 | 2.0 | 17.9 | 21.8 | 4-Acid Digestion |
| Zn, Zinc (ppm) | 105 | 6 | 100 | 109 | 4-Acid Digestion |
| Zr, Zirconium (ppm) | 134 | 24 | 113 | 156 | 4-Acid Digestion |
| Al, Aluminium (wt.%) | 3.15 | 0.151 | 3.02 | 3.29 | Aqua Regia Digestion (sample weights 0.15-50g) |
| As, Arsenic (ppm) | 7.96 | 0.740 | 7.64 | 8.27 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Ba, Barium (ppm) | 146 | 6 | 140 | 152 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Bi, Bismuth (ppm) | 0.73 | 0.071 | 0.68 | 0.79 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Ca, Calcium (wt.%) | 0.461 | 0.018 | 0.446 | 0.475 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Co, Cobalt (ppm) | 15.7 | 1.31 | 14.7 | 16.6 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Cr, Chromium (ppm) | 106 | 3 | 105 | 108 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Cs, Caesium (ppm) | 9.15 | 0.610 | 8.38 | 9.92 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Cu, Copper (ppm) | 36.4 | 1.31 | 35.4 | 37.3 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Fe, Iron (wt.%) | 3.93 | 0.254 | 3.71 | 4.14 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Ga, Gallium (ppm) | 10.8 | 1.1 | 9.8 | 11.7 | Aqua Regia Digestion (sample weights 0.15-50g) |
| K, Potassium (wt.%) | 1.17 | 0.035 | 1.14 | 1.20 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Li, Lithium (ppm) | 45.6 | 6.3 | 37.5 | 53.8 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Mg, Magnesium (wt.%) | 1.36 | 0.071 | 1.31 | 1.42 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Mn, Manganese (wt.%) | 0.035 | 0.002 | 0.034 | 0.036 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Mo, Molybdenum (ppm) | 3.86 | 0.220 | 3.68 | 4.04 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Na, Sodium (wt.%) | 0.108 | 0.009 | 0.099 | 0.116 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Ni, Nickel (ppm) | 57 | 4.1 | 53 | 60 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Pb, Lead (ppm) | 9.23 | 1.01 | 8.56 | 9.91 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Rb, Rubidium (ppm) | 114 | 10 | 101 | 128 | Aqua Regia Digestion (sample weights 0.15-50g) |
| S, Sulphur (wt.%) | 0.200 | 0.010 | 0.190 | 0.210 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Sc, Scandium (ppm) | 9.51 | 0.718 | 8.95 | 10.08 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Sn, Tin (ppm) | 2.26 | 0.208 | 2.04 | 2.48 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Th, Thorium (ppm) | 14.3 | 2.3 | 11.8 | 16.9 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Ti, Titanium (wt.%) | 0.198 | 0.011 | 0.186 | 0.211 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Tl, Thallium (ppm) | 0.66 | 0.08 | 0.56 | 0.75 | Aqua Regia Digestion (sample weights 0.15-50g) |
| U, Uranium (ppm) | 1.74 | 0.32 | 1.38 | 2.10 | Aqua Regia Digestion (sample weights 0.15-50g) |
| V, Vanadium (ppm) | 79 | 1.7 | 78 | 80 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Y, Yttrium (ppm) | 12.3 | 1.8 | 10.3 | 14.4 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Zn, Zinc (ppm) | 93 | 4.1 | 89 | 96 | Aqua Regia Digestion (sample weights 0.15-50g) |
| Zr, Zirconium (ppm) | 24.5 | 3.6 | 19.7 | 29.2 | Aqua Regia Digestion (sample weights 0.15-50g) |
| C, Carbon (wt.%) | 0.189 | 0.011 | 0.179 | 0.198 | Infrared Combustion |
| S, Sulphur (wt.%) | 0.190 | 0.013 | 0.179 | 0.201 | Infrared Combustion |
Downloads
Certificate DataPack SDS NRAM (412 KB)Specifications
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CRM State:
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Matrix:
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Mineralisation:
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CRM Group(s):