OREAS 552b

OREAS 552b 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.

Thirty 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.%) 2.79 0.101 2.72 2.87 Peroxide Fusion ICP
Co, Cobalt (wt.%) 0.400 0.011 0.389 0.411 Peroxide Fusion ICP
S, Sulphur (wt.%) 2.17 0.042 2.14 2.21 Infrared Combustion
Al2O3, Aluminium(III) oxide (wt.%) 12.39 0.203 12.25 12.53 Borate Fusion XRF
BaO, Barium oxide (ppm) 410 74 340 480 Borate Fusion XRF
CaO, Calcium oxide (wt.%) 0.542 0.016 0.530 0.554 Borate Fusion XRF
Co, Cobalt (wt.%) 0.399 0.010 0.388 0.409 Borate Fusion XRF
Cu, Copper (wt.%) 2.80 0.075 2.75 2.86 Borate Fusion XRF
Fe2O3, Iron(III) oxide (wt.%) 4.32 0.042 4.26 4.37 Borate Fusion XRF
K2O, Potassium oxide (wt.%) 2.78 0.078 2.73 2.84 Borate Fusion XRF
MgO, Magnesium oxide (wt.%) 6.24 0.114 6.17 6.32 Borate Fusion XRF
MnO, Manganese oxide (wt.%) 0.049 0.005 0.044 0.054 Borate Fusion XRF
Ni, Nickel (ppm) 148 14 129 167 Borate Fusion XRF
P2O5, Phosphorus(V) oxide (wt.%) 0.121 0.005 0.115 0.127 Borate Fusion XRF
SiO2, Silicon dioxide (wt.%) 56.96 1.258 56.01 57.91 Borate Fusion XRF
SO3, Sulphur trioxide (wt.%) 5.47 0.209 5.29 5.64 Borate Fusion XRF
Sr, Strontium (ppm) 72 20 56 89 Borate Fusion XRF
TiO2, Titanium dioxide (wt.%) 0.774 0.023 0.749 0.798 Borate Fusion XRF
V2O5, Vanadium(V) oxide (ppm) 505 56 417 594 Borate Fusion XRF
Zr, Zirconium (ppm) 220 30 199 242 Borate Fusion XRF
LOI1000, Loss On Ignition @1000 °C (wt.%) 11.14 0.369 10.95 11.32 Thermogravimetry
C, Carbon (wt.%) 3.49 0.088 3.44 3.55 Infrared Combustion
Co, Cobalt (wt.%) 0.191 0.016 0.174 0.208 Sulphuric Acid 5% Leach
Cu, Copper (wt.%) 1.13 0.078 1.09 1.18 Sulphuric Acid 5% Leach
Al, Aluminium (wt.%) 6.43 0.142 6.25 6.62 Peroxide Fusion ICP
As, Arsenic (ppm) 53 8 46 59 Peroxide Fusion ICP
B, Boron (ppm) 224 22 204 245 Peroxide Fusion ICP
Ba, Barium (ppm) 371 15 355 387 Peroxide Fusion ICP
Be, Beryllium (ppm) 4.95 0.157 4.71 5.20 Peroxide Fusion ICP
Bi, Bismuth (ppm) 3.44 0.129 3.17 3.71 Peroxide Fusion ICP
Ca, Calcium (wt.%) 0.386 0.034 0.360 0.411 Peroxide Fusion ICP
Ce, Cerium (ppm) 177 16 152 203 Peroxide Fusion ICP
Cr, Chromium (ppm) 101 24 88 115 Peroxide Fusion ICP
Cs, Caesium (ppm) 2.07 0.119 1.89 2.25 Peroxide Fusion ICP
Dy, Dysprosium (ppm) 6.57 0.74 5.31 7.82 Peroxide Fusion ICP
Er, Erbium (ppm) 3.76 0.292 3.37 4.14 Peroxide Fusion ICP
Eu, Europium (ppm) 0.93 0.12 0.76 1.09 Peroxide Fusion ICP
Fe, Iron (wt.%) 3.00 0.121 2.91 3.08 Peroxide Fusion ICP
Ga, Gallium (ppm) 26.7 1.82 24.7 28.6 Peroxide Fusion ICP
Gd, Gadolinium (ppm) 7.10 0.80 6.01 8.19 Peroxide Fusion ICP
Ge, Germanium (ppm) 1.95 0.21 1.71 2.18 Peroxide Fusion ICP
Ho, Holmium (ppm) 1.27 0.124 1.09 1.44 Peroxide Fusion ICP
In, Indium (ppm) 1.67 0.119 1.47 1.86 Peroxide Fusion ICP
K, Potassium (wt.%) 2.26 0.088 2.19 2.34 Peroxide Fusion ICP
La, Lanthanum (ppm) 88 4.8 83 94 Peroxide Fusion ICP
Li, Lithium (ppm) 79 4.3 75 83 Peroxide Fusion ICP
Lu, Lutetium (ppm) 0.51 0.032 0.47 0.55 Peroxide Fusion ICP
Mg, Magnesium (wt.%) 3.76 0.137 3.67 3.86 Peroxide Fusion ICP
Mn, Manganese (wt.%) 0.039 0.001 0.037 0.040 Peroxide Fusion ICP
Mo, Molybdenum (ppm) 11.5 0.98 10.6 12.3 Peroxide Fusion ICP
Nb, Niobium (ppm) 24.4 1.64 22.1 26.6 Peroxide Fusion ICP
Nd, Neodymium (ppm) 68 2.1 63 73 Peroxide Fusion ICP
Ni, Nickel (ppm) 145 13 133 157 Peroxide Fusion ICP
P, Phosphorus (wt.%) 0.056 0.008 0.048 0.064 Peroxide Fusion ICP
Pb, Lead (ppm) < 100 IND IND IND Peroxide Fusion ICP
Pr, Praseodymium (ppm) 19.2 0.89 17.7 20.8 Peroxide Fusion ICP
Rb, Rubidium (ppm) 86 3.9 83 90 Peroxide Fusion ICP
S, Sulphur (wt.%) 2.18 0.080 2.11 2.24 Peroxide Fusion ICP
Sb, Antimony (ppm) 3.06 0.090 2.88 3.24 Peroxide Fusion ICP
Sc, Scandium (ppm) 11.5 0.83 10.7 12.3 Peroxide Fusion ICP
Si, Silicon (wt.%) 26.75 0.448 26.09 27.40 Peroxide Fusion ICP
Sm, Samarium (ppm) 8.98 0.779 7.41 10.56 Peroxide Fusion ICP
Sr, Strontium (ppm) 80 4.8 76 84 Peroxide Fusion ICP
Ta, Tantalum (ppm) 1.87 0.139 1.73 2.02 Peroxide Fusion ICP
Tb, Terbium (ppm) 1.12 0.12 0.95 1.28 Peroxide Fusion ICP
Th, Thorium (ppm) 15.2 0.64 14.6 15.8 Peroxide Fusion ICP
Ti, Titanium (wt.%) 0.452 0.014 0.438 0.465 Peroxide Fusion ICP
Tl, Thallium (ppm) 0.63 0.08 0.52 0.74 Peroxide Fusion ICP
Tm, Thulium (ppm) 0.52 0.06 0.43 0.62 Peroxide Fusion ICP
U, Uranium (ppm) 12.2 0.64 11.2 13.1 Peroxide Fusion ICP
V, Vanadium (ppm) 276 18 267 286 Peroxide Fusion ICP
W, Tungsten (ppm) 4.55 1.27 2.41 6.70 Peroxide Fusion ICP
Y, Yttrium (ppm) 34.7 1.47 33.6 35.9 Peroxide Fusion ICP
Yb, Ytterbium (ppm) 3.49 0.342 2.97 4.00 Peroxide Fusion ICP
Zn, Zinc (ppm) 29.6 4.6 24.0 35.2 Peroxide Fusion ICP
Ag, Silver (ppm) 0.385 0.128 0.235 0.535 4-Acid Digestion
Al, Aluminium (wt.%) 6.34 0.253 6.17 6.51 4-Acid Digestion
As, Arsenic (ppm) 55 2.8 52 57 4-Acid Digestion
Ba, Barium (ppm) 363 14 351 375 4-Acid Digestion
Be, Beryllium (ppm) 4.17 0.305 3.94 4.39 4-Acid Digestion
Bi, Bismuth (ppm) 3.18 0.134 3.08 3.29 4-Acid Digestion
Ca, Calcium (wt.%) 0.386 0.020 0.373 0.399 4-Acid Digestion
Cd, Cadmium (ppm) 0.38 0.04 0.34 0.41 4-Acid Digestion
Ce, Cerium (ppm) 158 11 151 165 4-Acid Digestion
Co, Cobalt (wt.%) 0.395 0.020 0.380 0.409 4-Acid Digestion
Cr, Chromium (ppm) 85 9 81 90 4-Acid Digestion
Cs, Caesium (ppm) 1.91 0.104 1.82 1.99 4-Acid Digestion
Cu, Copper (wt.%) 2.78 0.099 2.72 2.85 4-Acid Digestion
Dy, Dysprosium (ppm) 4.66 0.55 4.20 5.12 4-Acid Digestion
Er, Erbium (ppm) 2.82 0.50 2.43 3.21 4-Acid Digestion
Eu, Europium (ppm) 0.86 0.038 0.80 0.92 4-Acid Digestion
Fe, Iron (wt.%) 2.95 0.105 2.88 3.03 4-Acid Digestion
Ga, Gallium (ppm) 26.2 1.36 25.1 27.2 4-Acid Digestion
Gd, Gadolinium (ppm) 5.41 0.79 4.75 6.08 4-Acid Digestion
Ge, Germanium (ppm) 0.18 0.06 0.11 0.25 4-Acid Digestion
Hf, Hafnium (ppm) 4.98 0.159 4.77 5.20 4-Acid Digestion
Ho, Holmium (ppm) 0.90 0.11 0.80 1.00 4-Acid Digestion
In, Indium (ppm) 1.66 0.094 1.57 1.76 4-Acid Digestion
K, Potassium (wt.%) 2.25 0.059 2.20 2.31 4-Acid Digestion
La, Lanthanum (ppm) 79 6.5 75 83 4-Acid Digestion
Li, Lithium (ppm) 78 3.2 76 81 4-Acid Digestion
Lu, Lutetium (ppm) 0.43 0.05 0.38 0.48 4-Acid Digestion
Mg, Magnesium (wt.%) 3.72 0.147 3.61 3.82 4-Acid Digestion
Mn, Manganese (wt.%) 0.036 0.002 0.035 0.038 4-Acid Digestion
Mo, Molybdenum (ppm) 11.4 0.56 10.9 11.9 4-Acid Digestion
Na, Sodium (wt.%) 0.052 0.010 0.047 0.057 4-Acid Digestion
Nb, Niobium (ppm) 16.9 3.5 14.8 19.0 4-Acid Digestion
Nd, Neodymium (ppm) 67 4.7 63 71 4-Acid Digestion
Ni, Nickel (ppm) 142 8 137 147 4-Acid Digestion
P, Phosphorus (wt.%) 0.052 0.003 0.051 0.054 4-Acid Digestion
Pb, Lead (ppm) 13.3 1.28 12.6 14.1 4-Acid Digestion
Pr, Praseodymium (ppm) 17.8 1.67 16.5 19.1 4-Acid Digestion
Rb, Rubidium (ppm) 86 4.4 82 89 4-Acid Digestion
Re, Rhenium (ppm) 0.025 0.004 0.022 0.028 4-Acid Digestion
S, Sulphur (wt.%) 2.15 0.064 2.09 2.20 4-Acid Digestion
Sb, Antimony (ppm) 2.96 0.30 2.76 3.15 4-Acid Digestion
Sc, Scandium (ppm) 12.2 0.81 11.7 12.8 4-Acid Digestion
Se, Selenium (ppm) 5.59 0.63 4.84 6.34 4-Acid Digestion
Sm, Samarium (ppm) 8.97 0.92 8.24 9.69 4-Acid Digestion
Sn, Tin (ppm) 2.60 0.197 2.42 2.78 4-Acid Digestion
Sr, Strontium (ppm) 75 3.2 73 78 4-Acid Digestion
Ta, Tantalum (ppm) 1.17 0.21 1.03 1.31 4-Acid Digestion
Tb, Terbium (ppm) 0.83 0.14 0.67 1.00 4-Acid Digestion
Te, Tellurium (ppm) 0.066 0.020 0.032 0.100 4-Acid Digestion
Th, Thorium (ppm) 14.8 0.87 14.2 15.4 4-Acid Digestion
Ti, Titanium (wt.%) 0.288 0.060 0.260 0.317 4-Acid Digestion
Tl, Thallium (ppm) 0.62 0.042 0.59 0.65 4-Acid Digestion
Tm, Thulium (ppm) 0.42 0.06 0.36 0.47 4-Acid Digestion
U, Uranium (ppm) 11.5 0.60 11.0 12.0 4-Acid Digestion
V, Vanadium (ppm) 259 13 251 267 4-Acid Digestion
W, Tungsten (ppm) 4.50 0.56 3.71 5.29 4-Acid Digestion
Y, Yttrium (ppm) 23.5 1.28 22.3 24.7 4-Acid Digestion
Yb, Ytterbium (ppm) 2.81 0.35 2.57 3.05 4-Acid Digestion
Zn, Zinc (ppm) 26.9 1.80 25.5 28.2 4-Acid Digestion
Zr, Zirconium (ppm) 173 7 167 178 4-Acid Digestion
Ag, Silver (ppm) 0.401 0.139 0.180 0.623 Aqua Regia Digestion
Al, Aluminium (wt.%) 1.38 0.30 1.24 1.53 Aqua Regia Digestion
As, Arsenic (ppm) 53 2.8 51 55 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) 64 5.6 59 68 Aqua Regia Digestion
Be, Beryllium (ppm) 2.04 0.21 1.91 2.18 Aqua Regia Digestion
Bi, Bismuth (ppm) 2.98 0.198 2.84 3.13 Aqua Regia Digestion
Ca, Calcium (wt.%) 0.384 0.013 0.373 0.395 Aqua Regia Digestion
Cd, Cadmium (ppm) 0.37 0.018 0.35 0.39 Aqua Regia Digestion
Ce, Cerium (ppm) 43.0 7.8 39.0 47.1 Aqua Regia Digestion
Co, Cobalt (wt.%) 0.380 0.020 0.367 0.392 Aqua Regia Digestion
Cr, Chromium (ppm) 34.7 4.2 32.1 37.2 Aqua Regia Digestion
Cs, Caesium (ppm) 0.33 0.08 0.29 0.38 Aqua Regia Digestion
Cu, Copper (wt.%) 2.80 0.076 2.74 2.86 Aqua Regia Digestion
Dy, Dysprosium (ppm) 1.12 0.105 0.95 1.28 Aqua Regia Digestion
Er, Erbium (ppm) 0.49 0.06 0.41 0.57 Aqua Regia Digestion
Eu, Europium (ppm) 0.30 0.07 0.21 0.40 Aqua Regia Digestion
Fe, Iron (wt.%) 2.83 0.148 2.74 2.93 Aqua Regia Digestion
Ga, Gallium (ppm) 8.70 1.43 7.96 9.45 Aqua Regia Digestion
Gd, Gadolinium (ppm) 2.11 0.150 1.82 2.41 Aqua Regia Digestion
Ge, Germanium (ppm) 0.097 0.030 0.064 0.130 Aqua Regia Digestion
Hf, Hafnium (ppm) 0.36 0.07 0.31 0.40 Aqua Regia Digestion
Hg, Mercury (ppm) 0.073 0.015 0.054 0.093 Aqua Regia Digestion
Ho, Holmium (ppm) 0.18 0.03 0.15 0.22 Aqua Regia Digestion
In, Indium (ppm) 1.07 0.034 1.04 1.10 Aqua Regia Digestion
K, Potassium (wt.%) 0.206 0.030 0.191 0.222 Aqua Regia Digestion
La, Lanthanum (ppm) 20.7 2.9 19.2 22.2 Aqua Regia Digestion
Li, Lithium (ppm) 53 9 49 58 Aqua Regia Digestion
Mg, Magnesium (wt.%) 3.14 0.257 3.00 3.27 Aqua Regia Digestion
Mn, Manganese (wt.%) 0.036 0.001 0.035 0.037 Aqua Regia Digestion
Mo, Molybdenum (ppm) 10.5 0.53 10.1 10.9 Aqua Regia Digestion
Na, Sodium (wt.%) 0.012 0.004 0.009 0.014 Aqua Regia Digestion
Nb, Niobium (ppm) 0.056 0.010 0.042 0.069 Aqua Regia Digestion
Nd, Neodymium (ppm) 19.2 4.9 13.6 24.7 Aqua Regia Digestion
Ni, Nickel (ppm) 138 8 133 142 Aqua Regia Digestion
P, Phosphorus (wt.%) 0.038 0.003 0.036 0.040 Aqua Regia Digestion
Pb, Lead (ppm) 9.62 1.28 8.94 10.30 Aqua Regia Digestion
Pr, Praseodymium (ppm) 5.10 1.35 3.53 6.67 Aqua Regia Digestion
Rb, Rubidium (ppm) 7.23 1.20 6.48 7.98 Aqua Regia Digestion
Re, Rhenium (ppm) 0.022 0.002 0.019 0.025 Aqua Regia Digestion
S, Sulphur (wt.%) 2.14 0.066 2.09 2.18 Aqua Regia Digestion
Sb, Antimony (ppm) 1.67 0.25 1.50 1.83 Aqua Regia Digestion
Sc, Scandium (ppm) 4.29 0.44 4.02 4.55 Aqua Regia Digestion
Se, Selenium (ppm) 5.60 0.346 5.21 5.99 Aqua Regia Digestion
Sm, Samarium (ppm) 3.07 0.89 2.02 4.12 Aqua Regia Digestion
Sn, Tin (ppm) 1.13 0.12 1.03 1.22 Aqua Regia Digestion
Sr, Strontium (ppm) 18.3 3.8 16.3 20.4 Aqua Regia Digestion
Ta, Tantalum (ppm) < 0.010 IND IND IND Aqua Regia Digestion
Tb, Terbium (ppm) 0.24 0.03 0.20 0.28 Aqua Regia Digestion
Te, Tellurium (ppm) 0.050 0.013 0.033 0.067 Aqua Regia Digestion
Th, Thorium (ppm) 5.62 1.06 5.06 6.17 Aqua Regia Digestion
U, Uranium (ppm) 5.65 0.539 5.31 5.99 Aqua Regia Digestion
V, Vanadium (ppm) 59 6 55 62 Aqua Regia Digestion
W, Tungsten (ppm) 2.16 0.47 1.65 2.68 Aqua Regia Digestion
Y, Yttrium (ppm) 4.53 0.56 4.22 4.84 Aqua Regia Digestion
Yb, Ytterbium (ppm) 0.40 0.05 0.35 0.45 Aqua Regia Digestion
Zn, Zinc (ppm) 24.2 1.73 23.0 25.4 Aqua Regia Digestion
Zr, Zirconium (ppm) 11.7 1.5 10.9 12.6 Aqua Regia Digestion
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