OREAS 551b

OREAS 551b was prepared from copper-cobalt sulphide ore samples sourced from MMG’s Kinsevere Mine blended with barren black slate and a minor addition of cobalt concentrate. The Kinsevere Mine is located in the Haut-Katanga province about 30 km from Lubumbashi in the south-east of the Democratic Republic of the Congo (DRC). The hypogene mineralisation at Kinsevere occurs as stratabound, veins and breccias consisting of mainly chalcopyrite, carrolite, bornite and occasionally pyrite and chalcocite, hosted within the Mine series carbonaceous shales, siltstones, and dolomites of the Roan Group belonging to the Katangan Supergroup stratigraphy. Twenty-six analytical laboratories participated in the program using the following methods:

  • Lithium borate fusion whole rock analysis package by X-ray fluorescence
  • Loss on Ignition (LOI) at 1000° C
  • Infrared combustion furnace/CS analyser to determine C and S
  • Co and Cu by 5% sulphuric acid leach with ICP-OES or AAS finish
  • Full ICP-OES and ICP-MS elemental suites by sodium peroxide fusion
  • Full ICP-OES and ICP-MS elemental suites by 4-acid (HCl-HNO3-HF-HClO4) digestion
  • Full ICP-OES and ICP-MS elemental suites by aqua regia digestion
Analyte Certified Value 1SD Expanded Uncertainty Low Expanded Uncertainty High Method
Cu, Copper (wt.%) 2.75 0.081 2.66 2.84 Peroxide Fusion ICP
Co, Cobalt (wt.%) 0.289 0.008 0.280 0.298 Peroxide Fusion ICP
S, Sulphur (wt.%) 2.10 0.063 2.06 2.13 Infrared Combustion
Ag, Silver (ppm) 0.302 0.057 0.226 0.379 4-Acid Digestion
Al, Aluminium (wt.%) 6.18 0.201 5.99 6.37 4-Acid Digestion
As, Arsenic (ppm) 50 2.1 48 53 4-Acid Digestion
Ba, Barium (ppm) 328 17 317 340 4-Acid Digestion
Be, Beryllium (ppm) 4.14 0.161 3.95 4.32 4-Acid Digestion
Bi, Bismuth (ppm) 2.64 0.131 2.53 2.75 4-Acid Digestion
Ca, Calcium (wt.%) 0.835 0.017 0.811 0.859 4-Acid Digestion
Cd, Cadmium (ppm) 0.31 0.024 0.28 0.34 4-Acid Digestion
Ce, Cerium (ppm) 145 12 137 153 4-Acid Digestion
Co, Cobalt (wt.%) 0.285 0.006 0.278 0.292 4-Acid Digestion
Cr, Chromium (ppm) 79 8 73 86 4-Acid Digestion
Cs, Caesium (ppm) 1.89 0.086 1.78 2.01 4-Acid Digestion
Cu, Copper (wt.%) 2.77 0.048 2.71 2.83 4-Acid Digestion
Dy, Dysprosium (ppm) 4.46 0.52 3.96 4.95 4-Acid Digestion
Er, Erbium (ppm) 2.72 0.33 2.39 3.06 4-Acid Digestion
Eu, Europium (ppm) 0.80 0.047 0.73 0.87 4-Acid Digestion
Fe, Iron (wt.%) 2.89 0.079 2.80 2.98 4-Acid Digestion
Ga, Gallium (ppm) 25.9 1.25 25.0 26.8 4-Acid Digestion
Gd, Gadolinium (ppm) 5.14 0.68 4.47 5.81 4-Acid Digestion
Hf, Hafnium (ppm) 4.79 0.242 4.56 5.03 4-Acid Digestion
Ho, Holmium (ppm) 0.93 0.081 0.82 1.04 4-Acid Digestion
In, Indium (ppm) 1.58 0.073 1.52 1.64 4-Acid Digestion
K, Potassium (wt.%) 2.17 0.066 2.11 2.23 4-Acid Digestion
La, Lanthanum (ppm) 77 5.1 73 81 4-Acid Digestion
Li, Lithium (ppm) 81 2.4 78 83 4-Acid Digestion
Lu, Lutetium (ppm) 0.39 0.05 0.34 0.43 4-Acid Digestion
Mg, Magnesium (wt.%) 4.31 0.159 4.16 4.46 4-Acid Digestion
Mn, Manganese (wt.%) 0.019 0.001 0.019 0.020 4-Acid Digestion
Mo, Molybdenum (ppm) 10.8 0.50 10.2 11.3 4-Acid Digestion
Na, Sodium (wt.%) 0.045 0.006 0.042 0.049 4-Acid Digestion
Nb, Niobium (ppm) 15.4 3.0 13.1 17.7 4-Acid Digestion
Nd, Neodymium (ppm) 61 4.7 55 67 4-Acid Digestion
Ni, Nickel (ppm) 100 2.8 97 103 4-Acid Digestion
P, Phosphorus (wt.%) 0.050 0.003 0.048 0.052 4-Acid Digestion
Pb, Lead (ppm) 11.8 1.07 11.0 12.5 4-Acid Digestion
Pr, Praseodymium (ppm) 17.0 0.95 15.9 18.1 4-Acid Digestion
Rb, Rubidium (ppm) 82 3.6 79 86 4-Acid Digestion
Re, Rhenium (ppm) 0.022 0.002 0.020 0.025 4-Acid Digestion
S, Sulphur (wt.%) 2.09 0.090 2.02 2.16 4-Acid Digestion
Sb, Antimony (ppm) 2.62 0.32 2.37 2.87 4-Acid Digestion
Sc, Scandium (ppm) 12.0 0.65 11.5 12.6 4-Acid Digestion
Se, Selenium (ppm) 4.96 0.357 4.44 5.48 4-Acid Digestion
Sm, Samarium (ppm) 8.33 0.600 7.56 9.10 4-Acid Digestion
Sn, Tin (ppm) 2.41 0.168 2.25 2.57 4-Acid Digestion
Sr, Strontium (ppm) 78 2.5 75 81 4-Acid Digestion
Ta, Tantalum (ppm) 1.13 0.18 0.94 1.32 4-Acid Digestion
Tb, Terbium (ppm) 0.77 0.064 0.70 0.84 4-Acid Digestion
Te, Tellurium (ppm) 0.066 0.012 0.041 0.091 4-Acid Digestion
Th, Thorium (ppm) 14.3 0.62 13.5 15.1 4-Acid Digestion
Ti, Titanium (wt.%) 0.242 0.065 0.208 0.276 4-Acid Digestion
Tl, Thallium (ppm) 0.58 0.034 0.54 0.61 4-Acid Digestion
Tm, Thulium (ppm) 0.40 0.09 0.30 0.50 4-Acid Digestion
U, Uranium (ppm) 10.7 0.51 10.2 11.1 4-Acid Digestion
V, Vanadium (ppm) 256 7 248 264 4-Acid Digestion
W, Tungsten (ppm) 3.54 0.47 3.09 3.99 4-Acid Digestion
Y, Yttrium (ppm) 22.4 0.99 21.5 23.2 4-Acid Digestion
Yb, Ytterbium (ppm) 2.63 0.37 2.37 2.89 4-Acid Digestion
Zn, Zinc (ppm) 22.5 1.38 20.9 24.0 4-Acid Digestion
Zr, Zirconium (ppm) 171 9 164 178 4-Acid Digestion
Co, Cobalt (wt.%) 0.077 0.005 0.073 0.082 Sulphuric Acid 5% Leach
Cu, Copper (wt.%) 1.12 0.083 1.07 1.16 Sulphuric Acid 5% Leach
C, Carbon (wt.%) 3.76 0.163 3.68 3.85 Infrared Combustion
Al2O3, Aluminium(III) oxide (wt.%) 11.93 0.186 11.71 12.15 Borate Fusion XRF
BaO, Barium oxide (ppm) 372 62 278 466 Borate Fusion XRF
CaO, Calcium oxide (wt.%) 1.17 0.022 1.15 1.19 Borate Fusion XRF
Co, Cobalt (wt.%) 0.289 0.009 0.280 0.299 Borate Fusion XRF
Cu, Copper (wt.%) 2.78 0.045 2.73 2.83 Borate Fusion XRF
Fe2O3, Iron(III) oxide (wt.%) 4.19 0.048 4.14 4.25 Borate Fusion XRF
K2O, Potassium oxide (wt.%) 2.60 0.057 2.56 2.65 Borate Fusion XRF
MgO, Magnesium oxide (wt.%) 7.16 0.143 7.08 7.25 Borate Fusion XRF
MnO, Manganese oxide (wt.%) 0.024 0.003 0.020 0.028 Borate Fusion XRF
Ni, Nickel (ppm) 101 24 47 154 Borate Fusion XRF
P2O5, Phosphorus(V) oxide (wt.%) 0.119 0.008 0.108 0.129 Borate Fusion XRF
SiO2, Silicon dioxide (wt.%) 55.38 0.455 54.90 55.85 Borate Fusion XRF
SO3, Sulphur trioxide (wt.%) 5.27 0.140 5.11 5.43 Borate Fusion XRF
SrO, Strontium oxide (ppm) 98 19 79 118 Borate Fusion XRF
TiO2, Titanium dioxide (wt.%) 0.739 0.021 0.716 0.762 Borate Fusion XRF
V2O5, Vanadium(V) oxide (ppm) 452 94 350 553 Borate Fusion XRF
Zr, Zirconium (ppm) 211 56 122 301 Borate Fusion XRF
LOI1000, Loss On Ignition @1000 °C (wt.%) 11.84 0.465 11.57 12.11 Thermogravimetry
Al, Aluminium (wt.%) 6.19 0.167 6.02 6.36 Peroxide Fusion ICP
As, Arsenic (ppm) 49.9 4.50 45.6 54.3 Peroxide Fusion ICP
B, Boron (ppm) 209 16 185 233 Peroxide Fusion ICP
Ba, Barium (ppm) 337 11 326 348 Peroxide Fusion ICP
Be, Beryllium (ppm) 4.85 0.52 4.34 5.37 Peroxide Fusion ICP
Bi, Bismuth (ppm) 2.81 0.163 2.62 3.00 Peroxide Fusion ICP
Ca, Calcium (wt.%) 0.834 0.068 0.783 0.886 Peroxide Fusion ICP
Ce, Cerium (ppm) 155 5 149 162 Peroxide Fusion ICP
Cr, Chromium (ppm) 107 21 95 120 Peroxide Fusion ICP
Cs, Caesium (ppm) 1.88 0.19 1.67 2.09 Peroxide Fusion ICP
Dy, Dysprosium (ppm) 6.50 0.261 5.99 7.01 Peroxide Fusion ICP
Er, Erbium (ppm) 3.49 0.37 3.17 3.80 Peroxide Fusion ICP
Eu, Europium (ppm) 0.85 0.09 0.73 0.97 Peroxide Fusion ICP
Fe, Iron (wt.%) 2.89 0.094 2.82 2.96 Peroxide Fusion ICP
Ga, Gallium (ppm) 25.8 1.35 24.2 27.3 Peroxide Fusion ICP
Gd, Gadolinium (ppm) 6.58 0.639 6.10 7.05 Peroxide Fusion ICP
Ge, Germanium (ppm) 2.14 0.39 1.79 2.50 Peroxide Fusion ICP
Ho, Holmium (ppm) 1.29 0.075 1.17 1.41 Peroxide Fusion ICP
In, Indium (ppm) 1.64 0.128 1.50 1.77 Peroxide Fusion ICP
K, Potassium (wt.%) 2.21 0.116 2.12 2.30 Peroxide Fusion ICP
La, Lanthanum (ppm) 80 3.8 77 83 Peroxide Fusion ICP
Li, Lithium (ppm) 81 4.5 76 86 Peroxide Fusion ICP
Lu, Lutetium (ppm) 0.53 0.046 0.46 0.60 Peroxide Fusion ICP
Mg, Magnesium (wt.%) 4.30 0.160 4.19 4.42 Peroxide Fusion ICP
Mn, Manganese (wt.%) 0.020 0.002 0.019 0.021 Peroxide Fusion ICP
Mo, Molybdenum (ppm) 11.1 1.4 9.4 12.7 Peroxide Fusion ICP
Nb, Niobium (ppm) 24.1 1.85 22.2 26.0 Peroxide Fusion ICP
Nd, Neodymium (ppm) 64 3.9 61 67 Peroxide Fusion ICP
Ni, Nickel (ppm) 103 13 90 115 Peroxide Fusion ICP
P, Phosphorus (wt.%) 0.052 0.008 0.038 0.067 Peroxide Fusion ICP
Pb, Lead (ppm) 13.2 1.7 10.4 15.9 Peroxide Fusion ICP
Pr, Praseodymium (ppm) 17.9 1.25 16.7 19.1 Peroxide Fusion ICP
Rb, Rubidium (ppm) 82 3.3 78 86 Peroxide Fusion ICP
Re, Rhenium (ppm) < 0.10 IND IND IND Peroxide Fusion ICP
S, Sulphur (wt.%) 2.09 0.115 2.01 2.16 Peroxide Fusion ICP
Sb, Antimony (ppm) 2.67 0.225 2.19 3.15 Peroxide Fusion ICP
Sc, Scandium (ppm) 11.5 0.90 10.5 12.5 Peroxide Fusion ICP
Si, Silicon (wt.%) 26.08 0.818 25.26 26.91 Peroxide Fusion ICP
Sm, Samarium (ppm) 8.92 0.514 8.47 9.37 Peroxide Fusion ICP
Sr, Strontium (ppm) 78 5.0 73 84 Peroxide Fusion ICP
Ta, Tantalum (ppm) 1.82 0.25 1.56 2.07 Peroxide Fusion ICP
Tb, Terbium (ppm) 1.10 0.099 1.00 1.19 Peroxide Fusion ICP
Th, Thorium (ppm) 14.6 0.73 14.0 15.2 Peroxide Fusion ICP
Ti, Titanium (wt.%) 0.435 0.017 0.420 0.450 Peroxide Fusion ICP
Tl, Thallium (ppm) 0.62 0.08 0.52 0.72 Peroxide Fusion ICP
Tm, Thulium (ppm) 0.53 0.048 0.47 0.60 Peroxide Fusion ICP
U, Uranium (ppm) 10.8 0.71 10.2 11.4 Peroxide Fusion ICP
V, Vanadium (ppm) 274 14 259 289 Peroxide Fusion ICP
W, Tungsten (ppm) 4.09 0.69 3.03 5.14 Peroxide Fusion ICP
Y, Yttrium (ppm) 32.8 1.45 31.6 34.0 Peroxide Fusion ICP
Yb, Ytterbium (ppm) 3.42 0.36 3.12 3.73 Peroxide Fusion ICP
Ag, Silver (ppm) 0.256 0.074 0.171 0.342 Aqua Regia Digestion
Al, Aluminium (wt.%) 1.31 0.13 1.23 1.39 Aqua Regia Digestion
As, Arsenic (ppm) 48.2 2.81 46.1 50.3 Aqua Regia Digestion
Au, Gold (ppm) < 0.020 IND IND IND Aqua Regia Digestion
B, Boron (ppm) < 10.0 IND IND IND Aqua Regia Digestion
Ba, Barium (ppm) 59 8 53 65 Aqua Regia Digestion
Be, Beryllium (ppm) 1.99 0.169 1.88 2.10 Aqua Regia Digestion
Bi, Bismuth (ppm) 2.47 0.152 2.36 2.57 Aqua Regia Digestion
Ca, Calcium (wt.%) 0.813 0.036 0.784 0.842 Aqua Regia Digestion
Cd, Cadmium (ppm) 0.31 0.022 0.28 0.33 Aqua Regia Digestion
Ce, Cerium (ppm) 41.1 5.9 37.7 44.5 Aqua Regia Digestion
Co, Cobalt (wt.%) 0.271 0.027 0.257 0.285 Aqua Regia Digestion
Cr, Chromium (ppm) 32.3 2.57 30.7 33.9 Aqua Regia Digestion
Cs, Caesium (ppm) 0.32 0.07 0.28 0.36 Aqua Regia Digestion
Cu, Copper (wt.%) 2.73 0.072 2.68 2.77 Aqua Regia Digestion
Dy, Dysprosium (ppm) 0.97 0.079 0.87 1.06 Aqua Regia Digestion
Er, Erbium (ppm) 0.44 0.033 0.41 0.47 Aqua Regia Digestion
Eu, Europium (ppm) 0.29 0.026 0.25 0.32 Aqua Regia Digestion
Fe, Iron (wt.%) 2.66 0.106 2.57 2.75 Aqua Regia Digestion
Ga, Gallium (ppm) 8.54 0.92 7.93 9.15 Aqua Regia Digestion
Gd, Gadolinium (ppm) 1.78 0.23 1.53 2.04 Aqua Regia Digestion
Hf, Hafnium (ppm) 0.32 0.04 0.29 0.34 Aqua Regia Digestion
Hg, Mercury (ppm) 0.058 0.011 0.044 0.071 Aqua Regia Digestion
Ho, Holmium (ppm) 0.17 0.02 0.14 0.20 Aqua Regia Digestion
In, Indium (ppm) 1.05 0.059 0.99 1.10 Aqua Regia Digestion
K, Potassium (wt.%) 0.194 0.019 0.182 0.205 Aqua Regia Digestion
La, Lanthanum (ppm) 18.7 2.3 17.3 20.1 Aqua Regia Digestion
Li, Lithium (ppm) 54 9 50 59 Aqua Regia Digestion
Lu, Lutetium (ppm) 0.052 0.004 0.045 0.059 Aqua Regia Digestion
Mg, Magnesium (wt.%) 3.57 0.217 3.44 3.69 Aqua Regia Digestion
Mn, Manganese (wt.%) 0.018 0.001 0.018 0.019 Aqua Regia Digestion
Mo, Molybdenum (ppm) 10.1 0.46 9.7 10.5 Aqua Regia Digestion
Na, Sodium (wt.%) 0.010 0.002 0.008 0.011 Aqua Regia Digestion
Nd, Neodymium (ppm) 18.1 3.0 14.7 21.5 Aqua Regia Digestion
Ni, Nickel (ppm) 93 5.5 89 97 Aqua Regia Digestion
P, Phosphorus (wt.%) 0.036 0.003 0.034 0.037 Aqua Regia Digestion
Pb, Lead (ppm) 8.29 0.725 7.85 8.73 Aqua Regia Digestion
Pr, Praseodymium (ppm) 4.81 0.76 3.94 5.68 Aqua Regia Digestion
Rb, Rubidium (ppm) 6.59 1.09 5.90 7.27 Aqua Regia Digestion
Re, Rhenium (ppm) 0.021 0.002 0.018 0.023 Aqua Regia Digestion
S, Sulphur (wt.%) 2.06 0.081 2.00 2.12 Aqua Regia Digestion
Sb, Antimony (ppm) 1.62 0.23 1.46 1.79 Aqua Regia Digestion
Sc, Scandium (ppm) 4.06 0.336 3.85 4.27 Aqua Regia Digestion
Se, Selenium (ppm) 4.93 0.386 4.55 5.32 Aqua Regia Digestion
Sm, Samarium (ppm) 2.86 0.36 2.45 3.27 Aqua Regia Digestion
Sn, Tin (ppm) 1.09 0.071 1.00 1.18 Aqua Regia Digestion
Sr, Strontium (ppm) 23.1 2.6 21.7 24.5 Aqua Regia Digestion
Ta, Tantalum (ppm) < 0.010 IND IND IND Aqua Regia Digestion
Tb, Terbium (ppm) 0.20 0.019 0.19 0.22 Aqua Regia Digestion
Te, Tellurium (ppm) 0.047 0.013 0.031 0.063 Aqua Regia Digestion
Th, Thorium (ppm) 5.43 0.59 4.99 5.86 Aqua Regia Digestion
U, Uranium (ppm) 4.99 0.334 4.76 5.23 Aqua Regia Digestion
V, Vanadium (ppm) 56 7 52 59 Aqua Regia Digestion
W, Tungsten (ppm) 1.59 0.29 1.29 1.88 Aqua Regia Digestion
Y, Yttrium (ppm) 3.86 0.42 3.62 4.10 Aqua Regia Digestion
Yb, Ytterbium (ppm) 0.36 0.04 0.29 0.42 Aqua Regia Digestion
Zn, Zinc (ppm) 19.9 1.44 18.8 21.1 Aqua Regia Digestion
Zr, Zirconium (ppm) 10.4 0.99 9.9 11.0 Aqua Regia Digestion
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