OREAS 30a

Certified Reference Material OREAS 30a was prepared from unweathered, olivine tholeiitic basalt from the Quaternary Newer Volcanics Province in Victoria, Australia. It is characterised by very low background gold of less than 2 parts per billion.
Analyte Certified Value 1SD 95% Confidence Limits Low 95% Confidence Limits High Method
Au, Gold (ppb) < 2 IND IND IND Pb Fire Assay
Pd, Palladium (ppb) < 2.00 IND IND IND Pb Fire Assay
Pt, Platinum (ppb) < 5.00 IND IND IND Pb Fire Assay
Al2O3, Aluminium(III) oxide (wt.%) 15.17 0.121 15.09 15.25 Borate Fusion XRF
BaO, Barium oxide (ppm) 660 76 607 712 Borate Fusion XRF
CaO, Calcium oxide (wt.%) 8.23 0.068 8.19 8.27 Borate Fusion XRF
Cr2O3, Chromium(III) oxide (ppm) 283 43 264 302 Borate Fusion XRF
Fe2O3, Iron(III) oxide (wt.%) 11.78 0.073 11.74 11.83 Borate Fusion XRF
K2O, Potassium oxide (wt.%) 2.04 0.016 2.03 2.05 Borate Fusion XRF
MgO, Magnesium oxide (wt.%) 7.88 0.094 7.82 7.94 Borate Fusion XRF
MnO, Manganese oxide (wt.%) 0.158 0.005 0.155 0.161 Borate Fusion XRF
Na2O, Sodium oxide (wt.%) 3.15 0.050 3.12 3.18 Borate Fusion XRF
P2O5, Phosphorus(V) oxide (wt.%) 0.591 0.010 0.585 0.597 Borate Fusion XRF
SiO2, Silicon dioxide (wt.%) 46.97 0.168 46.89 47.06 Borate Fusion XRF
SO3, Sulphur trioxide (wt.%) 0.103 0.012 0.095 0.112 Borate Fusion XRF
SrO, Strontium oxide (ppm) 894 64 827 961 Borate Fusion XRF
TiO2, Titanium dioxide (wt.%) 2.09 0.018 2.08 2.10 Borate Fusion XRF
LOI1000, Loss on ignition @1000 °C (wt.%) 1.68 0.122 1.61 1.76 Thermogravimetry
S, Sulphur (wt.%) 0.040 0.007 0.036 0.044 Infrared Combustion
Al, Aluminium (wt.%) 7.88 0.127 7.77 7.99 Borate / Peroxide Fusion ICP
Ba, Barium (ppm) 522 24 507 537 Borate / Peroxide Fusion ICP
Be, Beryllium (ppm) 2.16 0.30 2.01 2.30 Borate / Peroxide Fusion ICP
Ca, Calcium (wt.%) 5.71 0.267 5.53 5.90 Borate / Peroxide Fusion ICP
Ce, Cerium (ppm) 58 3.2 56 60 Borate / Peroxide Fusion ICP
Co, Cobalt (ppm) 44.9 2.87 43.1 46.6 Borate / Peroxide Fusion ICP
Cr, Chromium (ppm) 198 21 185 212 Borate / Peroxide Fusion ICP
Cs, Caesium (ppm) 1.12 0.13 1.10 1.15 Borate / Peroxide Fusion ICP
Cu, Copper (ppm) 43.6 4.19 39.4 47.7 Borate / Peroxide Fusion ICP
Dy, Dysprosium (ppm) 4.19 0.163 4.10 4.27 Borate / Peroxide Fusion ICP
Er, Erbium (ppm) 1.93 0.158 1.81 2.05 Borate / Peroxide Fusion ICP
Eu, Europium (ppm) 1.76 0.105 1.70 1.82 Borate / Peroxide Fusion ICP
Fe, Iron (wt.%) 8.12 0.272 7.92 8.32 Borate / Peroxide Fusion ICP
Ga, Gallium (ppm) 21.7 1.28 21.0 22.4 Borate / Peroxide Fusion ICP
Gd, Gadolinium (ppm) 5.22 0.194 5.12 5.32 Borate / Peroxide Fusion ICP
Hf, Hafnium (ppm) 4.77 0.383 4.47 5.07 Borate / Peroxide Fusion ICP
Ho, Holmium (ppm) 0.73 0.060 0.70 0.77 Borate / Peroxide Fusion ICP
K, Potassium (wt.%) 1.68 0.075 1.64 1.73 Borate / Peroxide Fusion ICP
La, Lanthanum (ppm) 28.9 1.83 27.7 30.2 Borate / Peroxide Fusion ICP
Li, Lithium (ppm) 12.4 2.5 9.0 15.9 Borate / Peroxide Fusion ICP
Lu, Lutetium (ppm) 0.22 0.015 0.21 0.22 Borate / Peroxide Fusion ICP
Mg, Magnesium (wt.%) 4.69 0.091 4.62 4.76 Borate / Peroxide Fusion ICP
Mn, Manganese (wt.%) 0.117 0.003 0.116 0.119 Borate / Peroxide Fusion ICP
Mo, Molybdenum (ppm) 4.61 0.73 4.11 5.11 Borate / Peroxide Fusion ICP
Nb, Niobium (ppm) 45.4 1.76 44.1 46.7 Borate / Peroxide Fusion ICP
Nd, Neodymium (ppm) 27.4 1.55 26.4 28.3 Borate / Peroxide Fusion ICP
Ni, Nickel (ppm) 145 6 141 148 Borate / Peroxide Fusion ICP
P, Phosphorus (wt.%) 0.257 0.008 0.247 0.268 Borate / Peroxide Fusion ICP
Pr, Praseodymium (ppm) 7.05 0.565 6.65 7.45 Borate / Peroxide Fusion ICP
Rb, Rubidium (ppm) 36.8 2.09 35.6 37.9 Borate / Peroxide Fusion ICP
Sc, Scandium (ppm) 19.7 1.82 17.9 21.6 Borate / Peroxide Fusion ICP
Si, Silicon (wt.%) 21.87 0.438 21.60 22.13 Borate / Peroxide Fusion ICP
Sm, Samarium (ppm) 5.68 0.412 5.42 5.95 Borate / Peroxide Fusion ICP
Sr, Strontium (ppm) 741 24 723 758 Borate / Peroxide Fusion ICP
Ta, Tantalum (ppm) 2.80 0.236 2.64 2.96 Borate / Peroxide Fusion ICP
Tb, Terbium (ppm) 0.75 0.060 0.71 0.79 Borate / Peroxide Fusion ICP
Th, Thorium (ppm) 3.71 0.306 3.52 3.91 Borate / Peroxide Fusion ICP
Ti, Titanium (wt.%) 1.22 0.027 1.20 1.24 Borate / Peroxide Fusion ICP
Tm, Thulium (ppm) 0.26 0.04 0.23 0.28 Borate / Peroxide Fusion ICP
U, Uranium (ppm) 1.37 0.14 1.29 1.45 Borate / Peroxide Fusion ICP
V, Vanadium (ppm) 208 13 199 216 Borate / Peroxide Fusion ICP
Y, Yttrium (ppm) 19.4 1.10 18.8 20.1 Borate / Peroxide Fusion ICP
Yb, Ytterbium (ppm) 1.53 0.126 1.47 1.59 Borate / Peroxide Fusion ICP
Zn, Zinc (ppm) 107 10 97 117 Borate / Peroxide Fusion ICP
Zr, Zirconium (ppm) 200 10 189 211 Borate / Peroxide Fusion ICP
Ag, Silver (ppm) < 0.100 IND IND IND 4-Acid Digestion
Al, Aluminium (wt.%) 7.90 0.331 7.71 8.09 4-Acid Digestion
As, Arsenic (ppm) 1.55 0.25 1.47 1.64 4-Acid Digestion
Ba, Barium (ppm) 537 17 528 545 4-Acid Digestion
Be, Beryllium (ppm) 2.18 0.159 2.09 2.27 4-Acid Digestion
Bi, Bismuth (ppm) 0.032 0.008 0.025 0.038 4-Acid Digestion
Ca, Calcium (wt.%) 5.67 0.273 5.51 5.82 4-Acid Digestion
Cd, Cadmium (ppm) 0.14 0.02 0.13 0.15 4-Acid Digestion
Ce, Cerium (ppm) 58 3.9 56 60 4-Acid Digestion
Co, Cobalt (ppm) 45.1 1.96 44.1 46.0 4-Acid Digestion
Cr, Chromium (ppm) 156 19 145 166 4-Acid Digestion
Cs, Caesium (ppm) 1.17 0.053 1.14 1.20 4-Acid Digestion
Cu, Copper (ppm) 44.4 1.41 43.7 45.1 4-Acid Digestion
Dy, Dysprosium (ppm) 4.36 0.243 4.10 4.63 4-Acid Digestion
Er, Erbium (ppm) 2.04 0.111 1.94 2.15 4-Acid Digestion
Eu, Europium (ppm) 1.82 0.151 1.67 1.98 4-Acid Digestion
Fe, Iron (wt.%) 8.06 0.323 7.87 8.26 4-Acid Digestion
Ga, Gallium (ppm) 22.3 0.90 21.9 22.8 4-Acid Digestion
Gd, Gadolinium (ppm) 5.41 0.370 5.05 5.77 4-Acid Digestion
Ge, Germanium (ppm) 0.13 0.02 0.11 0.14 4-Acid Digestion
Hf, Hafnium (ppm) 4.81 0.249 4.69 4.94 4-Acid Digestion
Ho, Holmium (ppm) 0.78 0.038 0.74 0.83 4-Acid Digestion
In, Indium (ppm) 0.072 0.010 0.069 0.075 4-Acid Digestion
K, Potassium (wt.%) 1.71 0.084 1.66 1.76 4-Acid Digestion
La, Lanthanum (ppm) 28.3 1.95 27.2 29.5 4-Acid Digestion
Li, Lithium (ppm) 10.9 0.70 10.4 11.4 4-Acid Digestion
Lu, Lutetium (ppm) 0.23 0.018 0.21 0.24 4-Acid Digestion
Mg, Magnesium (wt.%) 4.58 0.186 4.47 4.68 4-Acid Digestion
Mn, Manganese (wt.%) 0.116 0.004 0.113 0.118 4-Acid Digestion
Mo, Molybdenum (ppm) 4.27 0.224 4.13 4.40 4-Acid Digestion
Na, Sodium (wt.%) 2.38 0.101 2.32 2.43 4-Acid Digestion
Nb, Niobium (ppm) 45.5 2.12 44.4 46.7 4-Acid Digestion
Nd, Neodymium (ppm) 27.5 0.74 26.8 28.3 4-Acid Digestion
Ni, Nickel (ppm) 140 6 137 144 4-Acid Digestion
P, Phosphorus (wt.%) 0.255 0.008 0.251 0.258 4-Acid Digestion
Pb, Lead (ppm) 3.75 0.223 3.61 3.88 4-Acid Digestion
Pr, Praseodymium (ppm) 6.96 0.238 6.67 7.25 4-Acid Digestion
Rb, Rubidium (ppm) 37.1 2.03 35.8 38.3 4-Acid Digestion
S, Sulphur (wt.%) 0.044 0.004 0.041 0.046 4-Acid Digestion
Sc, Scandium (ppm) 20.0 1.43 19.2 20.7 4-Acid Digestion
Sm, Samarium (ppm) 5.96 0.318 5.66 6.26 4-Acid Digestion
Sn, Tin (ppm) 1.88 0.144 1.81 1.96 4-Acid Digestion
Sr, Strontium (ppm) 776 42 753 799 4-Acid Digestion
Ta, Tantalum (ppm) 2.97 0.189 2.87 3.08 4-Acid Digestion
Tb, Terbium (ppm) 0.78 0.052 0.75 0.82 4-Acid Digestion
Th, Thorium (ppm) 3.78 0.245 3.64 3.92 4-Acid Digestion
Ti, Titanium (wt.%) 1.22 0.050 1.20 1.25 4-Acid Digestion
Tl, Thallium (ppm) 0.13 0.011 0.12 0.13 4-Acid Digestion
Tm, Thulium (ppm) 0.27 0.03 0.25 0.29 4-Acid Digestion
U, Uranium (ppm) 1.34 0.071 1.31 1.38 4-Acid Digestion
V, Vanadium (ppm) 201 6 198 204 4-Acid Digestion
W, Tungsten (ppm) 0.21 0.04 0.19 0.23 4-Acid Digestion
Y, Yttrium (ppm) 19.5 0.95 19.0 20.0 4-Acid Digestion
Yb, Ytterbium (ppm) 1.55 0.067 1.50 1.61 4-Acid Digestion
Zn, Zinc (ppm) 109 4 107 111 4-Acid Digestion
Zr, Zirconium (ppm) 204 5 201 207 4-Acid Digestion
Ag, Silver (ppm) 0.028 0.005 0.025 0.030 Aqua Regia Digestion
Al, Aluminium (wt.%) 3.30 0.210 3.17 3.43 Aqua Regia Digestion
As, Arsenic (ppm) 1.22 0.13 1.12 1.31 Aqua Regia Digestion
Au, Gold (ppm) < 0.020 IND IND IND Aqua Regia Digestion
Ba, Barium (ppm) 57 4.4 54 59 Aqua Regia Digestion
Be, Beryllium (ppm) 1.70 0.160 1.60 1.80 Aqua Regia Digestion
Bi, Bismuth (ppm) 0.024 0.006 0.021 0.027 Aqua Regia Digestion
Ca, Calcium (wt.%) 1.68 0.153 1.59 1.77 Aqua Regia Digestion
Cd, Cadmium (ppm) 0.10 0.01 0.09 0.11 Aqua Regia Digestion
Ce, Cerium (ppm) 47.4 1.51 46.6 48.2 Aqua Regia Digestion
Co, Cobalt (ppm) 38.5 2.04 37.4 39.6 Aqua Regia Digestion
Cr, Chromium (ppm) 67 5.6 64 71 Aqua Regia Digestion
Cs, Caesium (ppm) 0.93 0.074 0.89 0.98 Aqua Regia Digestion
Cu, Copper (ppm) 42.9 1.78 41.9 43.9 Aqua Regia Digestion
Fe, Iron (wt.%) 6.64 0.322 6.45 6.83 Aqua Regia Digestion
Ga, Gallium (ppm) 11.0 1.1 10.2 11.7 Aqua Regia Digestion
Ge, Germanium (ppm) 0.16 0.04 0.10 0.21 Aqua Regia Digestion
In, Indium (ppm) 0.020 0.001 0.020 0.021 Aqua Regia Digestion
K, Potassium (wt.%) 0.413 0.020 0.402 0.424 Aqua Regia Digestion
La, Lanthanum (ppm) 24.0 1.75 23.1 25.0 Aqua Regia Digestion
Li, Lithium (ppm) 9.92 0.764 9.34 10.49 Aqua Regia Digestion
Lu, Lutetium (ppm) 0.11 0.009 0.10 0.12 Aqua Regia Digestion
Mg, Magnesium (wt.%) 3.24 0.134 3.16 3.32 Aqua Regia Digestion
Mn, Manganese (wt.%) 0.088 0.004 0.086 0.091 Aqua Regia Digestion
Mo, Molybdenum (ppm) 3.95 0.46 3.67 4.24 Aqua Regia Digestion
Na, Sodium (wt.%) 0.970 0.045 0.943 0.997 Aqua Regia Digestion
Ni, Nickel (ppm) 125 10 119 130 Aqua Regia Digestion
P, Phosphorus (wt.%) 0.234 0.015 0.226 0.243 Aqua Regia Digestion
Pb, Lead (ppm) 2.28 0.139 2.19 2.38 Aqua Regia Digestion
Rb, Rubidium (ppm) 19.4 1.37 18.6 20.2 Aqua Regia Digestion
S, Sulphur (wt.%) 0.041 0.004 0.038 0.043 Aqua Regia Digestion
Sc, Scandium (ppm) 2.71 0.50 2.35 3.08 Aqua Regia Digestion
Sn, Tin (ppm) 1.39 0.108 1.33 1.46 Aqua Regia Digestion
Sr, Strontium (ppm) 279 23 265 292 Aqua Regia Digestion
Ta, Tantalum (ppm) 0.082 0.020 0.066 0.098 Aqua Regia Digestion
Tb, Terbium (ppm) 0.47 0.024 0.44 0.50 Aqua Regia Digestion
Th, Thorium (ppm) 2.92 0.133 2.84 3.00 Aqua Regia Digestion
Ti, Titanium (wt.%) 0.833 0.053 0.795 0.871 Aqua Regia Digestion
Tl, Thallium (ppm) 0.096 0.007 0.093 0.099 Aqua Regia Digestion
U, Uranium (ppm) 0.86 0.048 0.83 0.89 Aqua Regia Digestion
V, Vanadium (ppm) 116 9 110 122 Aqua Regia Digestion
W, Tungsten (ppm) 0.068 0.010 0.059 0.076 Aqua Regia Digestion
Y, Yttrium (ppm) 12.3 0.64 11.9 12.7 Aqua Regia Digestion
Yb, Ytterbium (ppm) 0.76 0.070 0.68 0.85 Aqua Regia Digestion
Zn, Zinc (ppm) 97 6.2 93 101 Aqua Regia Digestion
Zr, Zirconium (ppm) 27.7 5.7 23.3 32.0 Aqua Regia Digestion
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