OREAS 920b

OREAS 920b was prepared from a blend of barren black slate and mine waste rock. The barren black slate was sourced from a quarry located in Victoria, Australia and the mine waste rock was sourced from the CSA mine located near the town of Cobar in central western New South Wales, Australia. The copper ore body of the CSA mine is hosted by the Early Devonian CSA Siltstone, a thinly bedded turbiditic sequence of carbonaceous siltstones and mudstones with minor coarser units. Iron-rich chlorite and silica are prominent alterations in the siltstone host. Twenty-three analytical laboratories participated in the following program:

  • 4-acid (HF-HNO3-HClO4-HCl) digestion for full ICP-OES and ICP-MS elemental suites
  • Aqua regia digestion for full ICP-OES and ICP-MS elemental suites
  • Peroxide fusion for full ICP-OES and ICP-MS elemental suites
Analyte Certified Value 1SD Expanded Uncertainty Low Expanded Uncertainty High Method
Cu, Copper (ppm) 116 5 112 120 4-Acid Digestion
Ag, Silver (ppm) 0.320 0.019 0.297 0.343 4-Acid Digestion
Zn, Zinc (ppm) 57 2.8 55 59 4-Acid Digestion
Al, Aluminium (wt.%) 6.79 0.251 6.59 7.00 4-Acid Digestion
As, Arsenic (ppm) 113 7 108 118 4-Acid Digestion
Ba, Barium (ppm) 2105 97 2023 2188 4-Acid Digestion
Be, Beryllium (ppm) 2.59 0.252 2.44 2.74 4-Acid Digestion
Bi, Bismuth (ppm) 0.79 0.048 0.75 0.83 4-Acid Digestion
Ca, Calcium (wt.%) 0.030 0.000 0.030 0.030 4-Acid Digestion
Cd, Cadmium (ppm) 0.042 0.014 0.024 0.060 4-Acid Digestion
Ce, Cerium (ppm) 90 3.4 86 94 4-Acid Digestion
Co, Cobalt (ppm) 1.63 0.088 1.55 1.71 4-Acid Digestion
Cr, Chromium (ppm) 87 12 81 93 4-Acid Digestion
Cs, Caesium (ppm) 4.43 0.246 4.27 4.58 4-Acid Digestion
Dy, Dysprosium (ppm) 3.62 0.53 3.14 4.10 4-Acid Digestion
Er, Erbium (ppm) 1.72 0.095 1.60 1.85 4-Acid Digestion
Eu, Europium (ppm) 1.29 0.124 1.12 1.46 4-Acid Digestion
Fe, Iron (wt.%) 3.03 0.104 2.93 3.12 4-Acid Digestion
Ga, Gallium (ppm) 20.3 1.02 19.4 21.3 4-Acid Digestion
Gd, Gadolinium (ppm) 5.49 0.64 4.73 6.24 4-Acid Digestion
Hf, Hafnium (ppm) 2.32 0.148 2.19 2.45 4-Acid Digestion
Ho, Holmium (ppm) 0.61 0.034 0.53 0.69 4-Acid Digestion
In, Indium (ppm) 0.075 0.009 0.069 0.082 4-Acid Digestion
K, Potassium (wt.%) 2.71 0.081 2.62 2.80 4-Acid Digestion
La, Lanthanum (ppm) 43.5 1.54 41.8 45.1 4-Acid Digestion
Li, Lithium (ppm) 21.3 1.23 20.4 22.3 4-Acid Digestion
Lu, Lutetium (ppm) 0.26 0.020 0.24 0.29 4-Acid Digestion
Mg, Magnesium (wt.%) 0.377 0.020 0.363 0.390 4-Acid Digestion
Mn, Manganese (wt.%) 0.007 0.000 0.007 0.007 4-Acid Digestion
Mo, Molybdenum (ppm) 2.93 0.177 2.79 3.07 4-Acid Digestion
Na, Sodium (wt.%) 0.098 0.014 0.089 0.106 4-Acid Digestion
Nb, Niobium (ppm) 5.04 1.67 4.15 5.94 4-Acid Digestion
Nd, Neodymium (ppm) 36.2 3.16 32.6 39.7 4-Acid Digestion
Ni, Nickel (ppm) 12.1 0.45 11.6 12.5 4-Acid Digestion
P, Phosphorus (wt.%) 0.032 0.001 0.031 0.033 4-Acid Digestion
Pb, Lead (ppm) 26.4 1.55 25.4 27.4 4-Acid Digestion
Pr, Praseodymium (ppm) 10.1 1.2 8.8 11.4 4-Acid Digestion
Rb, Rubidium (ppm) 156 8 149 162 4-Acid Digestion
Re, Rhenium (ppm) < 0.002 IND IND IND 4-Acid Digestion
S, Sulphur (wt.%) 0.029 0.002 0.028 0.031 4-Acid Digestion
Sb, Antimony (ppm) 3.97 0.278 3.78 4.17 4-Acid Digestion
Sc, Scandium (ppm) 12.5 0.74 12.0 13.0 4-Acid Digestion
Se, Selenium (ppm) 2.37 0.44 1.71 3.02 4-Acid Digestion
Sm, Samarium (ppm) 7.09 0.644 6.43 7.76 4-Acid Digestion
Sn, Tin (ppm) 3.91 0.225 3.72 4.11 4-Acid Digestion
Sr, Strontium (ppm) 57 2.9 55 59 4-Acid Digestion
Ta, Tantalum (ppm) 0.40 0.14 0.31 0.49 4-Acid Digestion
Tb, Terbium (ppm) 0.71 0.09 0.62 0.79 4-Acid Digestion
Te, Tellurium (ppm) 0.088 0.017 0.067 0.109 4-Acid Digestion
Th, Thorium (ppm) 15.5 1.25 14.7 16.3 4-Acid Digestion
Ti, Titanium (wt.%) 0.226 0.035 0.209 0.243 4-Acid Digestion
Tl, Thallium (ppm) 0.85 0.041 0.81 0.89 4-Acid Digestion
Tm, Thulium (ppm) 0.25 0.04 0.22 0.29 4-Acid Digestion
U, Uranium (ppm) 4.06 0.214 3.88 4.25 4-Acid Digestion
V, Vanadium (ppm) 166 9 160 172 4-Acid Digestion
W, Tungsten (ppm) 1.91 0.26 1.71 2.10 4-Acid Digestion
Y, Yttrium (ppm) 15.5 1.6 14.2 16.7 4-Acid Digestion
Yb, Ytterbium (ppm) 1.61 0.152 1.46 1.77 4-Acid Digestion
Zr, Zirconium (ppm) 80 4.5 76 83 4-Acid Digestion
Ag, Silver (ppm) 0.174 0.012 0.163 0.186 Aqua Regia Digestion
Al, Aluminium (wt.%) 0.749 0.074 0.707 0.790 Aqua Regia Digestion
As, Arsenic (ppm) 111 6 107 115 Aqua Regia Digestion
Au, Gold (ppm) 0.019 0.005 0.015 0.024 Aqua Regia Digestion
B, Boron (ppm) < 10.0 IND IND IND Aqua Regia Digestion
Ba, Barium (ppm) 190 34 174 206 Aqua Regia Digestion
Be, Beryllium (ppm) 0.52 0.08 0.46 0.58 Aqua Regia Digestion
Bi, Bismuth (ppm) 0.59 0.06 0.55 0.63 Aqua Regia Digestion
Ca, Calcium (wt.%) 0.023 0.004 0.018 0.027 Aqua Regia Digestion
Cd, Cadmium (ppm) 0.033 0.008 0.022 0.045 Aqua Regia Digestion
Ce, Cerium (ppm) 79 4.8 75 82 Aqua Regia Digestion
Co, Cobalt (ppm) 1.47 0.126 1.37 1.57 Aqua Regia Digestion
Cr, Chromium (ppm) 23.1 1.25 22.1 24.0 Aqua Regia Digestion
Cs, Caesium (ppm) 1.08 0.16 0.99 1.18 Aqua Regia Digestion
Cu, Copper (ppm) 115 6 111 119 Aqua Regia Digestion
Fe, Iron (wt.%) 2.77 0.155 2.68 2.85 Aqua Regia Digestion
Ga, Gallium (ppm) 2.64 0.44 2.37 2.91 Aqua Regia Digestion
Hf, Hafnium (ppm) 0.35 0.05 0.31 0.39 Aqua Regia Digestion
In, Indium (ppm) 0.024 0.004 0.019 0.030 Aqua Regia Digestion
K, Potassium (wt.%) 0.263 0.041 0.243 0.284 Aqua Regia Digestion
La, Lanthanum (ppm) 33.0 2.33 31.7 34.4 Aqua Regia Digestion
Li, Lithium (ppm) 2.90 0.41 2.57 3.23 Aqua Regia Digestion
Lu, Lutetium (ppm) 0.11 0.01 0.10 0.13 Aqua Regia Digestion
Mg, Magnesium (wt.%) 0.088 0.010 0.081 0.096 Aqua Regia Digestion
Mn, Manganese (wt.%) 0.005 0.000 0.005 0.005 Aqua Regia Digestion
Mo, Molybdenum (ppm) 2.75 0.169 2.60 2.89 Aqua Regia Digestion
Nb, Niobium (ppm) 0.054 0.007 0.044 0.064 Aqua Regia Digestion
Ni, Nickel (ppm) 9.00 0.613 8.57 9.42 Aqua Regia Digestion
P, Phosphorus (wt.%) 0.026 0.002 0.025 0.028 Aqua Regia Digestion
Pb, Lead (ppm) 16.6 1.46 15.5 17.8 Aqua Regia Digestion
Rb, Rubidium (ppm) 15.6 1.6 14.5 16.8 Aqua Regia Digestion
Re, Rhenium (ppm) < 0.001 IND IND IND Aqua Regia Digestion
S, Sulphur (wt.%) 0.026 0.005 0.022 0.029 Aqua Regia Digestion
Sb, Antimony (ppm) 2.54 0.46 2.29 2.78 Aqua Regia Digestion
Sc, Scandium (ppm) 1.57 0.21 1.43 1.71 Aqua Regia Digestion
Se, Selenium (ppm) 2.24 0.199 2.04 2.44 Aqua Regia Digestion
Sn, Tin (ppm) 0.59 0.12 0.50 0.67 Aqua Regia Digestion
Sr, Strontium (ppm) 14.0 2.8 12.5 15.6 Aqua Regia Digestion
Ta, Tantalum (ppm) < 0.010 IND IND IND Aqua Regia Digestion
Tb, Terbium (ppm) 0.50 0.027 0.46 0.54 Aqua Regia Digestion
Te, Tellurium (ppm) 0.071 0.012 0.055 0.088 Aqua Regia Digestion
Th, Thorium (ppm) 10.4 0.76 9.9 10.9 Aqua Regia Digestion
Ti, Titanium (wt.%) 0.011 0.002 0.009 0.012 Aqua Regia Digestion
Tl, Thallium (ppm) 0.10 0.01 0.09 0.11 Aqua Regia Digestion
U, Uranium (ppm) 2.39 0.152 2.29 2.48 Aqua Regia Digestion
V, Vanadium (ppm) 19.3 1.9 18.2 20.4 Aqua Regia Digestion
W, Tungsten (ppm) 0.11 0.02 0.09 0.13 Aqua Regia Digestion
Y, Yttrium (ppm) 7.25 0.585 6.85 7.66 Aqua Regia Digestion
Zn, Zinc (ppm) 47.5 2.36 46.1 49.0 Aqua Regia Digestion
Zr, Zirconium (ppm) 12.2 1.6 11.2 13.2 Aqua Regia Digestion
Ag, Silver (ppm) < 5.00 IND IND IND Borate / Peroxide Fusion ICP
Al, Aluminium (wt.%) 6.98 0.140 6.82 7.14 Borate / Peroxide Fusion ICP
As, Arsenic (ppm) 110 12 100 119 Borate / Peroxide Fusion ICP
B, Boron (ppm) 138 9 124 152 Borate / Peroxide Fusion ICP
Ba, Barium (ppm) 2114 76 2025 2204 Borate / Peroxide Fusion ICP
Be, Beryllium (ppm) 2.48 0.46 2.03 2.93 Borate / Peroxide Fusion ICP
Bi, Bismuth (ppm) 0.87 0.16 0.72 1.03 Borate / Peroxide Fusion ICP
Ca, Calcium (wt.%) < 0.100 IND IND IND Borate / Peroxide Fusion ICP
Ce, Cerium (ppm) 92 5.2 85 99 Borate / Peroxide Fusion ICP
Co, Cobalt (ppm) 1.76 0.26 1.44 2.07 Borate / Peroxide Fusion ICP
Cr, Chromium (ppm) 109 19 95 122 Borate / Peroxide Fusion ICP
Cs, Caesium (ppm) 4.52 0.289 4.12 4.93 Borate / Peroxide Fusion ICP
Cu, Copper (ppm) 119 17 104 133 Borate / Peroxide Fusion ICP
Dy, Dysprosium (ppm) 4.96 0.439 4.43 5.49 Borate / Peroxide Fusion ICP
Er, Erbium (ppm) 2.79 0.201 2.56 3.03 Borate / Peroxide Fusion ICP
Eu, Europium (ppm) 1.31 0.16 1.09 1.52 Borate / Peroxide Fusion ICP
Fe, Iron (wt.%) 3.03 0.092 2.96 3.10 Borate / Peroxide Fusion ICP
Ga, Gallium (ppm) 20.5 1.34 18.7 22.2 Borate / Peroxide Fusion ICP
Gd, Gadolinium (ppm) 5.81 0.65 5.17 6.45 Borate / Peroxide Fusion ICP
Ge, Germanium (ppm) 2.33 0.32 1.90 2.76 Borate / Peroxide Fusion ICP
Ho, Holmium (ppm) 0.97 0.065 0.87 1.08 Borate / Peroxide Fusion ICP
In, Indium (ppm) < 0.20 IND IND IND Borate / Peroxide Fusion ICP
K, Potassium (wt.%) 2.76 0.127 2.66 2.87 Borate / Peroxide Fusion ICP
La, Lanthanum (ppm) 43.6 3.53 40.6 46.6 Borate / Peroxide Fusion ICP
Li, Lithium (ppm) 21.7 2.14 18.8 24.7 Borate / Peroxide Fusion ICP
Lu, Lutetium (ppm) 0.41 0.04 0.36 0.45 Borate / Peroxide Fusion ICP
Mg, Magnesium (wt.%) 0.387 0.013 0.372 0.402 Borate / Peroxide Fusion ICP
Mn, Manganese (wt.%) 0.008 0.000 0.007 0.008 Borate / Peroxide Fusion ICP
Mo, Molybdenum (ppm) 3.37 0.76 2.69 4.06 Borate / Peroxide Fusion ICP
Nb, Niobium (ppm) 12.2 1.15 10.9 13.4 Borate / Peroxide Fusion ICP
Nd, Neodymium (ppm) 36.7 3.20 33.5 39.8 Borate / Peroxide Fusion ICP
P, Phosphorus (wt.%) 0.032 0.005 0.024 0.040 Borate / Peroxide Fusion ICP
Pb, Lead (ppm) 30.3 5.1 26.6 34.0 Borate / Peroxide Fusion ICP
Pr, Praseodymium (ppm) 9.90 0.602 9.06 10.74 Borate / Peroxide Fusion ICP
Rb, Rubidium (ppm) 154 6 145 162 Borate / Peroxide Fusion ICP
Re, Rhenium (ppm) < 0.10 IND IND IND Borate / Peroxide Fusion ICP
S, Sulphur (wt.%) 0.035 0.012 0.019 0.050 Borate / Peroxide Fusion ICP
Sb, Antimony (ppm) 4.10 0.259 3.71 4.49 Borate / Peroxide Fusion ICP
Sc, Scandium (ppm) 12.0 1.01 10.8 13.2 Borate / Peroxide Fusion ICP
Si, Silicon (wt.%) 35.16 0.833 34.26 36.06 Borate / Peroxide Fusion ICP
Sm, Samarium (ppm) 6.75 0.451 6.21 7.29 Borate / Peroxide Fusion ICP
Sr, Strontium (ppm) 60 4.5 55 66 Borate / Peroxide Fusion ICP
Ta, Tantalum (ppm) 0.85 0.22 0.65 1.05 Borate / Peroxide Fusion ICP
Tb, Terbium (ppm) 0.83 0.067 0.74 0.93 Borate / Peroxide Fusion ICP
Te, Tellurium (ppm) < 1.00 IND IND IND Borate / Peroxide Fusion ICP
Th, Thorium (ppm) 14.7 1.33 13.6 15.7 Borate / Peroxide Fusion ICP
Ti, Titanium (wt.%) 0.330 0.013 0.317 0.344 Borate / Peroxide Fusion ICP
Tl, Thallium (ppm) 0.88 0.084 0.79 0.96 Borate / Peroxide Fusion ICP
Tm, Thulium (ppm) 0.42 0.034 0.38 0.46 Borate / Peroxide Fusion ICP
U, Uranium (ppm) 4.43 0.422 4.05 4.81 Borate / Peroxide Fusion ICP
V, Vanadium (ppm) 176 9 169 183 Borate / Peroxide Fusion ICP
W, Tungsten (ppm) 3.01 0.85 2.03 3.99 Borate / Peroxide Fusion ICP
Y, Yttrium (ppm) 27.5 1.12 25.7 29.3 Borate / Peroxide Fusion ICP
Yb, Ytterbium (ppm) 2.75 0.187 2.50 3.00 Borate / Peroxide Fusion ICP
Zn, Zinc (ppm) 61 8 53 69 Borate / Peroxide Fusion ICP
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