OREAS 315

OREAS 315 has been prepared from a blend of barren black slate and various Zn-Pb-Ag ore and concentrate materials. This includes materials from the Dugald River, Black Star and Cannington deposits located in Northern Queensland, Australia.
Twenty-six commercial analytical laboratories participated in the program to certify:

  • Majors & base metals by oxidising fusion with X-ray fluorescence finish;
  • Loss on ignition at 1000° Celsius;
  • Total Sulphur by infrared combustion furnace or C/S analyser;
  • Full ICP-OES and MS elemental suites by peroxide fusion;
  • Full ICP-OES and MS elemental suites by 4-acid (HNO3-HF-HClO4-HCl) digestion;
  • Full ICP-OES and MS elemental suites by aqua regia digestion.
Analyte Certified Value 1SD Expanded Uncertainty Low Expanded Uncertainty High Method
Zn, Zinc (wt.%) 5.45 0.122 5.34 5.56 4-Acid Digestion
Pb, Lead (wt.%) 3.79 0.107 3.65 3.92 4-Acid Digestion
Ag, Silver (ppm) 72.5 2.83 69.5 75.4 4-Acid Digestion
Al2O3, Aluminium(III) oxide (wt.%) 10.10 0.159 9.98 10.22 Borate Fusion XRF
As, Arsenic (ppm) 183 51 114 252 Borate Fusion XRF
BaO, Barium oxide (wt.%) 0.247 0.017 0.236 0.259 Borate Fusion XRF
CaO, Calcium oxide (wt.%) 1.41 0.034 1.39 1.44 Borate Fusion XRF
Cu, Copper (ppm) 834 47 751 916 Borate Fusion XRF
Fe, Iron (wt.%) 5.25 0.103 5.19 5.32 Borate Fusion XRF
K2O, Potassium oxide (wt.%) 3.12 0.105 3.06 3.18 Borate Fusion XRF
MgO, Magnesium oxide (wt.%) 1.47 0.065 1.43 1.50 Borate Fusion XRF
Mn, Manganese (wt.%) 0.116 0.006 0.113 0.119 Borate Fusion XRF
Na2O, Sodium oxide (wt.%) 0.230 0.071 0.154 0.307 Borate Fusion XRF
P2O5, Phosphorus(V) oxide (wt.%) 0.075 0.009 0.071 0.080 Borate Fusion XRF
Pb, Lead (wt.%) 3.82 0.233 3.66 3.98 Borate Fusion XRF
S, Sulphur (wt.%) 5.48 0.395 5.19 5.76 Borate Fusion XRF
SiO2, Silicon dioxide (wt.%) 55.96 0.932 55.41 56.51 Borate Fusion XRF
TiO2, Titanium dioxide (wt.%) 0.405 0.009 0.392 0.418 Borate Fusion XRF
Zn, Zinc (wt.%) 5.55 0.119 5.47 5.64 Borate Fusion XRF
LOI1000, Loss On Ignition @1000 °C (wt.%) 7.85 0.132 7.70 8.00 Thermogravimetry
C, Carbon (wt.%) 1.47 0.049 1.43 1.50 Infrared Combustion
S, Sulphur (wt.%) 5.60 0.115 5.49 5.71 Infrared Combustion
Ag, Silver (ppm) 69.0 6.9 59.6 78.4 Borate / Peroxide Fusion ICP
Al, Aluminium (wt.%) 5.34 0.087 5.24 5.45 Borate / Peroxide Fusion ICP
As, Arsenic (ppm) 142 26 118 165 Borate / Peroxide Fusion ICP
B, Boron (ppm) 99 23 73 125 Borate / Peroxide Fusion ICP
Ba, Barium (wt.%) 0.221 0.012 0.209 0.232 Borate / Peroxide Fusion ICP
Be, Beryllium (ppm) 2.29 0.45 1.49 3.09 Borate / Peroxide Fusion ICP
Bi, Bismuth (ppm) 8.97 1.29 7.04 10.89 Borate / Peroxide Fusion ICP
Ca, Calcium (wt.%) 0.976 0.081 0.911 1.040 Borate / Peroxide Fusion ICP
Cd, Cadmium (ppm) 143 9 133 152 Borate / Peroxide Fusion ICP
Ce, Cerium (ppm) 66 2.8 63 70 Borate / Peroxide Fusion ICP
Co, Cobalt (ppm) 19.0 1.42 17.5 20.6 Borate / Peroxide Fusion ICP
Cr, Chromium (ppm) 199 33 175 223 Borate / Peroxide Fusion ICP
Cs, Caesium (ppm) 3.32 0.234 2.93 3.71 Borate / Peroxide Fusion ICP
Cu, Copper (ppm) 782 49 699 865 Borate / Peroxide Fusion ICP
Dy, Dysprosium (ppm) 3.86 0.296 3.34 4.37 Borate / Peroxide Fusion ICP
Er, Erbium (ppm) 2.20 0.196 1.98 2.42 Borate / Peroxide Fusion ICP
Eu, Europium (ppm) 1.04 0.100 0.92 1.17 Borate / Peroxide Fusion ICP
Fe, Iron (wt.%) 5.29 0.161 5.17 5.41 Borate / Peroxide Fusion ICP
Ga, Gallium (ppm) 16.7 1.9 15.1 18.4 Borate / Peroxide Fusion ICP
Gd, Gadolinium (ppm) 4.40 0.313 4.06 4.73 Borate / Peroxide Fusion ICP
Ge, Germanium (ppm) 4.43 0.80 3.05 5.81 Borate / Peroxide Fusion ICP
Hf, Hafnium (ppm) 2.45 0.42 1.88 3.02 Borate / Peroxide Fusion ICP
Ho, Holmium (ppm) 0.72 0.053 0.63 0.82 Borate / Peroxide Fusion ICP
In, Indium (ppm) 1.54 0.119 1.37 1.71 Borate / Peroxide Fusion ICP
K, Potassium (wt.%) 2.61 0.088 2.52 2.69 Borate / Peroxide Fusion ICP
La, Lanthanum (ppm) 32.3 2.24 30.7 33.9 Borate / Peroxide Fusion ICP
Li, Lithium (ppm) 22.4 1.95 19.7 25.1 Borate / Peroxide Fusion ICP
Lu, Lutetium (ppm) 0.31 0.03 0.27 0.35 Borate / Peroxide Fusion ICP
Mg, Magnesium (wt.%) 0.872 0.027 0.840 0.904 Borate / Peroxide Fusion ICP
Mn, Manganese (wt.%) 0.116 0.005 0.110 0.121 Borate / Peroxide Fusion ICP
Mo, Molybdenum (ppm) 11.0 1.4 8.7 13.2 Borate / Peroxide Fusion ICP
Nb, Niobium (ppm) 9.73 1.17 8.61 10.85 Borate / Peroxide Fusion ICP
Nd, Neodymium (ppm) 27.9 1.84 26.3 29.5 Borate / Peroxide Fusion ICP
Ni, Nickel (ppm) 237 18 221 254 Borate / Peroxide Fusion ICP
P, Phosphorus (wt.%) 0.036 0.005 0.027 0.044 Borate / Peroxide Fusion ICP
Pb, Lead (wt.%) 3.69 0.134 3.53 3.85 Borate / Peroxide Fusion ICP
Pr, Praseodymium (ppm) 7.34 0.701 6.65 8.03 Borate / Peroxide Fusion ICP
Rb, Rubidium (ppm) 126 9 118 133 Borate / Peroxide Fusion ICP
S, Sulphur (wt.%) 5.52 0.161 5.38 5.67 Borate / Peroxide Fusion ICP
Sb, Antimony (ppm) 102 6 93 110 Borate / Peroxide Fusion ICP
Sc, Scandium (ppm) 8.58 0.95 6.97 10.18 Borate / Peroxide Fusion ICP
Si, Silicon (wt.%) 27.03 1.197 25.98 28.08 Borate / Peroxide Fusion ICP
Sm, Samarium (ppm) 5.07 0.431 4.65 5.50 Borate / Peroxide Fusion ICP
Sr, Strontium (ppm) 68 8 61 75 Borate / Peroxide Fusion ICP
Ta, Tantalum (ppm) 0.79 0.16 0.61 0.97 Borate / Peroxide Fusion ICP
Tb, Terbium (ppm) 0.62 0.035 0.57 0.67 Borate / Peroxide Fusion ICP
Th, Thorium (ppm) 11.3 0.76 10.6 12.0 Borate / Peroxide Fusion ICP
Ti, Titanium (wt.%) 0.242 0.008 0.232 0.251 Borate / Peroxide Fusion ICP
Tl, Thallium (ppm) 18.5 1.22 17.3 19.7 Borate / Peroxide Fusion ICP
Tm, Thulium (ppm) 0.32 0.027 0.28 0.36 Borate / Peroxide Fusion ICP
U, Uranium (ppm) 4.03 0.323 3.72 4.34 Borate / Peroxide Fusion ICP
V, Vanadium (ppm) 117 7 109 125 Borate / Peroxide Fusion ICP
W, Tungsten (ppm) 1.88 0.49 0.62 3.13 Borate / Peroxide Fusion ICP
Y, Yttrium (ppm) 20.8 2.6 18.8 22.9 Borate / Peroxide Fusion ICP
Yb, Ytterbium (ppm) 2.19 0.186 1.91 2.47 Borate / Peroxide Fusion ICP
Zn, Zinc (wt.%) 5.46 0.122 5.30 5.61 Borate / Peroxide Fusion ICP
Zr, Zirconium (ppm) 85 4.6 77 93 Borate / Peroxide Fusion ICP
Al, Aluminium (wt.%) 5.24 0.233 5.06 5.43 4-Acid Digestion
As, Arsenic (ppm) 145 10 138 151 4-Acid Digestion
Be, Beryllium (ppm) 2.22 0.181 2.07 2.38 4-Acid Digestion
Bi, Bismuth (ppm) 8.28 0.412 7.52 9.04 4-Acid Digestion
Ca, Calcium (wt.%) 1.03 0.041 1.00 1.06 4-Acid Digestion
Cd, Cadmium (ppm) 140 6 135 144 4-Acid Digestion
Ce, Cerium (ppm) 64 3.7 62 67 4-Acid Digestion
Co, Cobalt (ppm) 17.7 1.9 16.2 19.1 4-Acid Digestion
Cr, Chromium (ppm) 161 15 151 170 4-Acid Digestion
Cs, Caesium (ppm) 3.24 0.33 3.03 3.45 4-Acid Digestion
Cu, Copper (ppm) 785 54 710 861 4-Acid Digestion
Dy, Dysprosium (ppm) 3.17 0.52 2.72 3.63 4-Acid Digestion
Er, Erbium (ppm) 1.62 0.28 1.34 1.89 4-Acid Digestion
Eu, Europium (ppm) 1.03 0.103 0.92 1.14 4-Acid Digestion
Fe, Iron (wt.%) 5.18 0.234 5.00 5.35 4-Acid Digestion
Ga, Gallium (ppm) 15.9 0.76 15.0 16.7 4-Acid Digestion
Gd, Gadolinium (ppm) 4.20 0.50 3.74 4.66 4-Acid Digestion
Hf, Hafnium (ppm) 2.05 0.22 1.87 2.22 4-Acid Digestion
Ho, Holmium (ppm) 0.57 0.10 0.46 0.69 4-Acid Digestion
In, Indium (ppm) 1.51 0.093 1.39 1.63 4-Acid Digestion
K, Potassium (wt.%) 2.57 0.094 2.51 2.64 4-Acid Digestion
La, Lanthanum (ppm) 31.6 2.43 29.9 33.3 4-Acid Digestion
Li, Lithium (ppm) 21.7 0.79 20.8 22.7 4-Acid Digestion
Lu, Lutetium (ppm) 0.25 0.04 0.21 0.29 4-Acid Digestion
Mg, Magnesium (wt.%) 0.858 0.055 0.828 0.889 4-Acid Digestion
Mn, Manganese (wt.%) 0.113 0.007 0.109 0.117 4-Acid Digestion
Mo, Molybdenum (ppm) 9.84 0.650 8.54 11.13 4-Acid Digestion
Na, Sodium (wt.%) 0.092 0.009 0.085 0.098 4-Acid Digestion
Nd, Neodymium (ppm) 27.1 1.50 25.4 28.9 4-Acid Digestion
Ni, Nickel (ppm) 232 16 223 241 4-Acid Digestion
P, Phosphorus (wt.%) 0.034 0.003 0.032 0.035 4-Acid Digestion
Pr, Praseodymium (ppm) 7.27 0.721 6.65 7.88 4-Acid Digestion
Rb, Rubidium (ppm) 121 7 116 125 4-Acid Digestion
S, Sulphur (wt.%) 5.37 0.322 5.17 5.58 4-Acid Digestion
Sb, Antimony (ppm) 92 10 83 100 4-Acid Digestion
Sc, Scandium (ppm) 9.22 0.93 8.53 9.91 4-Acid Digestion
Se, Selenium (ppm) 2.91 0.53 2.05 3.78 4-Acid Digestion
Sm, Samarium (ppm) 5.23 0.58 4.71 5.75 4-Acid Digestion
Sn, Tin (ppm) 3.14 0.42 2.79 3.50 4-Acid Digestion
Sr, Strontium (ppm) 61 3.9 59 63 4-Acid Digestion
Ta, Tantalum (ppm) 0.22 0.07 0.13 0.31 4-Acid Digestion
Tb, Terbium (ppm) 0.56 0.07 0.49 0.63 4-Acid Digestion
Te, Tellurium (ppm) 0.30 0.10 0.23 0.37 4-Acid Digestion
Th, Thorium (ppm) 10.9 0.64 10.3 11.4 4-Acid Digestion
Ti, Titanium (wt.%) 0.168 0.031 0.152 0.185 4-Acid Digestion
Tl, Thallium (ppm) 19.6 1.35 18.7 20.6 4-Acid Digestion
Tm, Thulium (ppm) 0.28 0.06 0.21 0.36 4-Acid Digestion
U, Uranium (ppm) 3.92 0.156 3.73 4.11 4-Acid Digestion
V, Vanadium (ppm) 115 6 111 119 4-Acid Digestion
W, Tungsten (ppm) 1.99 0.34 1.74 2.23 4-Acid Digestion
Y, Yttrium (ppm) 14.9 2.8 13.0 16.8 4-Acid Digestion
Yb, Ytterbium (ppm) 1.71 0.34 1.42 2.01 4-Acid Digestion
Zr, Zirconium (ppm) 66 3.6 63 69 4-Acid Digestion
Ag, Silver (ppm) 72.1 2.88 69.8 74.5 Aqua Regia Digestion
Al, Aluminium (wt.%) 0.680 0.100 0.629 0.732 Aqua Regia Digestion
As, Arsenic (ppm) 142 7 137 148 Aqua Regia Digestion
Be, Beryllium (ppm) 0.55 0.07 0.46 0.64 Aqua Regia Digestion
Bi, Bismuth (ppm) 8.07 0.427 7.70 8.44 Aqua Regia Digestion
Ca, Calcium (wt.%) 1.01 0.041 0.97 1.04 Aqua Regia Digestion
Cd, Cadmium (ppm) 137 13 131 144 Aqua Regia Digestion
Ce, Cerium (ppm) 43.2 7.6 37.9 48.5 Aqua Regia Digestion
Co, Cobalt (ppm) 16.2 1.26 15.2 17.2 Aqua Regia Digestion
Cr, Chromium (ppm) 59 3.5 56 61 Aqua Regia Digestion
Cs, Caesium (ppm) 1.04 0.095 0.96 1.12 Aqua Regia Digestion
Cu, Copper (ppm) 793 41 738 847 Aqua Regia Digestion
Dy, Dysprosium (ppm) 1.36 0.20 1.16 1.56 Aqua Regia Digestion
Er, Erbium (ppm) 0.63 0.10 0.52 0.75 Aqua Regia Digestion
Eu, Europium (ppm) 0.54 0.051 0.46 0.62 Aqua Regia Digestion
Fe, Iron (wt.%) 5.02 0.261 4.84 5.19 Aqua Regia Digestion
Ga, Gallium (ppm) 2.86 0.45 2.53 3.19 Aqua Regia Digestion
Gd, Gadolinium (ppm) 2.24 0.25 1.94 2.53 Aqua Regia Digestion
Hf, Hafnium (ppm) 0.43 0.07 0.36 0.50 Aqua Regia Digestion
Hg, Mercury (ppm) 2.09 0.111 1.96 2.23 Aqua Regia Digestion
Ho, Holmium (ppm) 0.24 0.04 0.19 0.29 Aqua Regia Digestion
In, Indium (ppm) 1.40 0.22 1.23 1.57 Aqua Regia Digestion
K, Potassium (wt.%) 0.270 0.035 0.250 0.291 Aqua Regia Digestion
La, Lanthanum (ppm) 17.5 4.0 15.0 19.9 Aqua Regia Digestion
Li, Lithium (ppm) 5.59 1.25 4.61 6.56 Aqua Regia Digestion
Lu, Lutetium (ppm) 0.093 0.013 0.077 0.109 Aqua Regia Digestion
Mg, Magnesium (wt.%) 0.614 0.050 0.585 0.643 Aqua Regia Digestion
Mn, Manganese (wt.%) 0.110 0.006 0.107 0.114 Aqua Regia Digestion
Mo, Molybdenum (ppm) 9.59 0.728 9.08 10.10 Aqua Regia Digestion
Na, Sodium (wt.%) 0.010 0.002 0.009 0.011 Aqua Regia Digestion
Nd, Neodymium (ppm) 14.6 1.8 12.6 16.6 Aqua Regia Digestion
Ni, Nickel (ppm) 222 11 214 229 Aqua Regia Digestion
P, Phosphorus (wt.%) 0.030 0.001 0.028 0.031 Aqua Regia Digestion
Pb, Lead (wt.%) 3.76 0.092 3.62 3.89 Aqua Regia Digestion
Pr, Praseodymium (ppm) 3.72 0.57 2.90 4.54 Aqua Regia Digestion
Rb, Rubidium (ppm) 16.6 2.7 14.9 18.4 Aqua Regia Digestion
S, Sulphur (wt.%) 5.50 0.238 5.32 5.68 Aqua Regia Digestion
Sb, Antimony (ppm) 72 11 66 78 Aqua Regia Digestion
Sc, Scandium (ppm) 1.95 0.21 1.79 2.10 Aqua Regia Digestion
Se, Selenium (ppm) 2.63 0.54 2.26 3.00 Aqua Regia Digestion
Sm, Samarium (ppm) 2.75 0.35 2.39 3.11 Aqua Regia Digestion
Sn, Tin (ppm) 1.01 0.17 0.85 1.16 Aqua Regia Digestion
Sr, Strontium (ppm) 15.9 2.2 14.5 17.2 Aqua Regia Digestion
Ta, Tantalum (ppm) < 0.050 IND IND IND Aqua Regia Digestion
Tb, Terbium (ppm) 0.29 0.03 0.25 0.33 Aqua Regia Digestion
Te, Tellurium (ppm) 0.26 0.06 0.20 0.31 Aqua Regia Digestion
Th, Thorium (ppm) 7.15 0.82 6.59 7.71 Aqua Regia Digestion
Ti, Titanium (wt.%) 0.010 0.001 0.009 0.010 Aqua Regia Digestion
Tl, Thallium (ppm) 13.2 1.6 12.2 14.3 Aqua Regia Digestion
Tm, Thulium (ppm) 0.078 0.022 0.054 0.102 Aqua Regia Digestion
U, Uranium (ppm) 2.42 0.105 2.30 2.55 Aqua Regia Digestion
V, Vanadium (ppm) 17.9 2.9 16.4 19.5 Aqua Regia Digestion
W, Tungsten (ppm) 0.37 0.06 0.28 0.46 Aqua Regia Digestion
Y, Yttrium (ppm) 5.75 0.73 5.27 6.23 Aqua Regia Digestion
Yb, Ytterbium (ppm) 0.60 0.11 0.49 0.71 Aqua Regia Digestion
Zn, Zinc (wt.%) 5.42 0.180 5.25 5.59 Aqua Regia Digestion
Zr, Zirconium (ppm) 13.3 1.4 12.3 14.3 Aqua Regia Digestion
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