OREAS 80

Ni–Co–PGE Ore

OREAS 80 was prepared from a blend of nickel sulphide ore materials sourced from the Cosmos and Mt Keith nickel operations in Western Australia. These materials are representative of komatiite-hosted nickel sulphide mineralisation, characterised by disseminated to massive sulphide assemblages dominated by pyrrhotite, pentlandite and chalcopyrite within ultramafic host rocks. To achieve the targeted multi-element composition, the primary nickel sulphide materials were blended with barren gabbronorite from Black Hill Quarry, South Australia, and a minor addition of PGE- and Cr-rich UG2 reef material from the Bushveld Complex, South Africa. OREAS 80 has been characterized using the following methods:

  • Lithium borate fusion with X-ray fluorescence
  • Full ICP-OES and ICP-MS elemental suites by 4-acid (HNO3-HF-HClO4-HCl) digestion
  • Sodium peroxide fusion or lithium borate fusion with full ICP-OES and ICP-MS suites
  • Sulphur by infrared combustion furnace

Certified values for applicable analytes are operationally defined for each method, with results under OREAS ISO 17034 scope of accreditation.

Analyte Certified Value 1SD Expanded Uncertainty Low Expanded Uncertainty High Method
Ni, Nickel (wt.%) 0.236 0.008 0.227 0.246 4-Acid Digestion
Co, Cobalt (ppm) 96 2.8 92 99 4-Acid Digestion
Au, Gold (ppb) 16.5 0.86 16.0 17.1 Pb Fire Assay
Pd, Palladium (ppb) 19.9 0.9 18.7 21.2 Pb Fire Assay
Pt, Platinum (ppb) 21.0 1.3 19.5 22.5 Pb Fire Assay
Pd, Palladium (ppb) 19.5 2.1 16.3 22.7 NiS Fire Assay
Pt, Platinum (ppb) 20.8 2.2 15.7 25.9 NiS Fire Assay
Ru, Ruthenium (ppb) 10.8 1.6 8.3 13.2 NiS Fire Assay
S, Sulphur (wt.%) 0.379 0.020 0.363 0.395 Infrared Combustion
Ag, Silver (ppm) 0.206 0.014 0.185 0.227 4-Acid Digestion
Al, Aluminium (wt.%) 7.44 0.280 7.25 7.63 4-Acid Digestion
As, Arsenic (ppm) 21.9 1.28 20.8 23.0 4-Acid Digestion
Ba, Barium (ppm) 452 12 435 470 4-Acid Digestion
Be, Beryllium (ppm) 1.49 0.091 1.38 1.60 4-Acid Digestion
Bi, Bismuth (ppm) 0.31 0.020 0.29 0.32 4-Acid Digestion
Ca, Calcium (wt.%) 5.50 0.154 5.32 5.67 4-Acid Digestion
Cd, Cadmium (ppm) 0.18 0.016 0.16 0.21 4-Acid Digestion
Ce, Cerium (ppm) 45.3 2.06 43.1 47.5 4-Acid Digestion
Cr, Chromium (wt.%) 0.082 0.015 0.072 0.091 4-Acid Digestion
Cs, Caesium (ppm) 4.68 0.281 4.49 4.87 4-Acid Digestion
Cu, Copper (ppm) 140 7 134 147 4-Acid Digestion
Dy, Dysprosium (ppm) 3.59 0.200 3.31 3.86 4-Acid Digestion
Er, Erbium (ppm) 2.00 0.094 1.87 2.13 4-Acid Digestion
Eu, Europium (ppm) 1.43 0.073 1.34 1.52 4-Acid Digestion
Fe, Iron (wt.%) 7.19 0.237 6.98 7.39 4-Acid Digestion
Ga, Gallium (ppm) 17.1 0.78 16.5 17.7 4-Acid Digestion
Gd, Gadolinium (ppm) 4.37 0.275 4.10 4.63 4-Acid Digestion
Hf, Hafnium (ppm) 2.01 0.150 1.86 2.15 4-Acid Digestion
Ho, Holmium (ppm) 0.70 0.043 0.66 0.75 4-Acid Digestion
In, Indium (ppm) 0.047 0.006 0.040 0.054 4-Acid Digestion
K, Potassium (wt.%) 1.49 0.067 1.44 1.54 4-Acid Digestion
La, Lanthanum (ppm) 21.1 0.95 20.2 22.0 4-Acid Digestion
Li, Lithium (ppm) 31.2 1.65 29.9 32.6 4-Acid Digestion
Lu, Lutetium (ppm) 0.28 0.022 0.25 0.30 4-Acid Digestion
Mg, Magnesium (wt.%) 6.26 0.191 6.08 6.44 4-Acid Digestion
Mn, Manganese (wt.%) 0.121 0.005 0.116 0.126 4-Acid Digestion
Mo, Molybdenum (ppm) 1.62 0.096 1.51 1.73 4-Acid Digestion
Na, Sodium (wt.%) 1.59 0.046 1.55 1.62 4-Acid Digestion
Nb, Niobium (ppm) 7.04 0.391 6.72 7.36 4-Acid Digestion
Nd, Neodymium (ppm) 23.3 1.32 21.6 25.0 4-Acid Digestion
P, Phosphorus (wt.%) 0.147 0.006 0.141 0.152 4-Acid Digestion
Pb, Lead (ppm) 71 2.2 69 74 4-Acid Digestion
Pr, Praseodymium (ppm) 5.66 0.348 5.31 6.01 4-Acid Digestion
Rb, Rubidium (ppm) 90 4.1 86 94 4-Acid Digestion
Re, Rhenium (ppm) < 0.002 IND IND IND 4-Acid Digestion
S, Sulphur (wt.%) 0.388 0.017 0.369 0.407 4-Acid Digestion
Sb, Antimony (ppm) 0.45 0.036 0.41 0.49 4-Acid Digestion
Sc, Scandium (ppm) 24.4 0.93 23.5 25.3 4-Acid Digestion
Se, Selenium (ppm) < 1.00 IND IND IND 4-Acid Digestion
Sm, Samarium (ppm) 4.91 0.215 4.68 5.14 4-Acid Digestion
Sn, Tin (ppm) 2.16 0.137 2.01 2.31 4-Acid Digestion
Sr, Strontium (ppm) 467 18 450 484 4-Acid Digestion
Ta, Tantalum (ppm) 0.49 0.06 0.44 0.54 4-Acid Digestion
Tb, Terbium (ppm) 0.63 0.032 0.59 0.67 4-Acid Digestion
Te, Tellurium (ppm) < 0.050 IND IND IND 4-Acid Digestion
Th, Thorium (ppm) 7.42 0.383 6.73 8.11 4-Acid Digestion
Ti, Titanium (wt.%) 0.599 0.027 0.575 0.623 4-Acid Digestion
Tl, Thallium (ppm) 0.23 0.011 0.22 0.25 4-Acid Digestion
Tm, Thulium (ppm) 0.28 0.021 0.25 0.30 4-Acid Digestion
U, Uranium (ppm) 1.65 0.085 1.55 1.76 4-Acid Digestion
V, Vanadium (ppm) 232 8 224 240 4-Acid Digestion
W, Tungsten (ppm) 2.34 0.150 2.17 2.50 4-Acid Digestion
Y, Yttrium (ppm) 18.2 1.26 17.3 19.0 4-Acid Digestion
Yb, Ytterbium (ppm) 1.78 0.079 1.66 1.89 4-Acid Digestion
Zn, Zinc (ppm) 119 6 114 125 4-Acid Digestion
Zr, Zirconium (ppm) 69 5.3 64 74 4-Acid Digestion
Al2O3, Aluminium(III) oxide (wt.%) 13.85 0.290 13.48 14.22 Borate / Peroxide Fusion ICP
As, Arsenic (ppm) 21.2 2.5 17.9 24.5 Borate / Peroxide Fusion ICP
Ba, Barium (ppm) 451 8 435 466 Borate / Peroxide Fusion ICP
Be, Beryllium (ppm) 1.62 0.30 0.92 2.32 Borate / Peroxide Fusion ICP
Bi, Bismuth (ppm) 0.31 0.04 0.27 0.34 Borate / Peroxide Fusion ICP
CaO, Calcium oxide (wt.%) 7.74 0.178 7.50 7.99 Borate / Peroxide Fusion ICP
Cd, Cadmium (ppm) < 10.0 IND IND IND Borate / Peroxide Fusion ICP
Ce, Cerium (ppm) 44.6 2.42 42.4 46.7 Borate / Peroxide Fusion ICP
Co, Cobalt (ppm) 97 5.6 91 103 Borate / Peroxide Fusion ICP
Cr, Chromium (wt.%) 0.125 0.006 0.119 0.130 Borate / Peroxide Fusion ICP
Cs, Caesium (ppm) 4.53 0.375 4.13 4.92 Borate / Peroxide Fusion ICP
Cu, Copper (ppm) 141 11 131 151 Borate / Peroxide Fusion ICP
Dy, Dysprosium (ppm) 3.45 0.138 3.26 3.63 Borate / Peroxide Fusion ICP
Er, Erbium (ppm) 1.94 0.118 1.82 2.07 Borate / Peroxide Fusion ICP
Eu, Europium (ppm) 1.42 0.079 1.26 1.57 Borate / Peroxide Fusion ICP
Fe2O3, Iron(III) oxide (wt.%) 10.29 0.200 9.97 10.60 Borate / Peroxide Fusion ICP
Ga, Gallium (ppm) 17.3 0.80 16.3 18.3 Borate / Peroxide Fusion ICP
Gd, Gadolinium (ppm) 4.12 0.164 3.90 4.34 Borate / Peroxide Fusion ICP
Hf, Hafnium (ppm) 2.53 0.35 2.22 2.84 Borate / Peroxide Fusion ICP
Ho, Holmium (ppm) 0.68 0.051 0.63 0.72 Borate / Peroxide Fusion ICP
In, Indium (ppm) < 0.20 IND IND IND Borate / Peroxide Fusion ICP
K2O, Potassium oxide (wt.%) 1.77 0.054 1.70 1.84 Borate / Peroxide Fusion ICP
La, Lanthanum (ppm) 20.4 0.87 19.2 21.7 Borate / Peroxide Fusion ICP
Li, Lithium (ppm) 33.8 1.54 30.7 36.9 Borate / Peroxide Fusion ICP
Lu, Lutetium (ppm) 0.26 0.03 0.21 0.31 Borate / Peroxide Fusion ICP
MgO, Magnesium oxide (wt.%) 10.61 0.245 10.29 10.93 Borate / Peroxide Fusion ICP
MnO, Manganese oxide (wt.%) 0.159 0.006 0.153 0.165 Borate / Peroxide Fusion ICP
Nb, Niobium (ppm) 6.66 0.85 5.68 7.64 Borate / Peroxide Fusion ICP
Nd, Neodymium (ppm) 23.3 1.52 21.9 24.7 Borate / Peroxide Fusion ICP
Ni, Nickel (wt.%) 0.239 0.011 0.231 0.247 Borate / Peroxide Fusion ICP
P2O5, Phosphorus(V) oxide (wt.%) 0.327 0.030 0.296 0.358 Borate / Peroxide Fusion ICP
Pb, Lead (ppm) 69 2.6 66 72 Borate / Peroxide Fusion ICP
Pr, Praseodymium (ppm) 5.50 0.279 5.24 5.76 Borate / Peroxide Fusion ICP
Rb, Rubidium (ppm) 89 4.1 85 93 Borate / Peroxide Fusion ICP
S, Sulphur (wt.%) 0.388 0.022 0.367 0.408 Borate / Peroxide Fusion ICP
Sc, Scandium (ppm) 23.2 1.71 21.9 24.5 Borate / Peroxide Fusion ICP
Se, Selenium (ppm) < 20.0 IND IND IND Borate / Peroxide Fusion ICP
SiO2, Silicon dioxide (wt.%) 49.19 1.690 47.51 50.87 Borate / Peroxide Fusion ICP
Sm, Samarium (ppm) 4.64 0.139 4.37 4.91 Borate / Peroxide Fusion ICP
Sn, Tin (ppm) 1.96 0.146 1.70 2.23 Borate / Peroxide Fusion ICP
Sr, Strontium (ppm) 469 15 445 492 Borate / Peroxide Fusion ICP
Tb, Terbium (ppm) 0.60 0.051 0.55 0.65 Borate / Peroxide Fusion ICP
Te, Tellurium (ppm) < 1.00 IND IND IND Borate / Peroxide Fusion ICP
Th, Thorium (ppm) 7.54 0.715 6.53 8.55 Borate / Peroxide Fusion ICP
TiO2, Titanium dioxide (wt.%) 0.997 0.028 0.964 1.030 Borate / Peroxide Fusion ICP
Tl, Thallium (ppm) < 0.50 IND IND IND Borate / Peroxide Fusion ICP
Tm, Thulium (ppm) 0.28 0.017 0.25 0.30 Borate / Peroxide Fusion ICP
U, Uranium (ppm) 1.71 0.133 1.48 1.93 Borate / Peroxide Fusion ICP
V, Vanadium (ppm) 238 11 227 249 Borate / Peroxide Fusion ICP
Y, Yttrium (ppm) 18.7 0.71 17.8 19.6 Borate / Peroxide Fusion ICP
Yb, Ytterbium (ppm) 1.76 0.112 1.61 1.91 Borate / Peroxide Fusion ICP
Zn, Zinc (ppm) 122 9 113 131 Borate / Peroxide Fusion ICP
Zr, Zirconium (ppm) 91 9 81 102 Borate / Peroxide Fusion ICP
Al2O3, Aluminium(III) oxide (wt.%) 13.96 0.224 13.82 14.10 Borate Fusion XRF
BaO, Barium oxide (ppm) 485 52 397 573 Borate Fusion XRF
CaO, Calcium oxide (wt.%) 7.80 0.111 7.71 7.89 Borate Fusion XRF
Co, Cobalt (ppm) 102 5 98 105 Borate Fusion XRF
Cr2O3, Chromium(III) oxide (ppm) 1786 62 1687 1884 Borate Fusion XRF
Cu, Copper (ppm) 136 18 117 155 Borate Fusion XRF
Fe2O3, Iron(III) oxide (wt.%) 10.34 0.140 10.23 10.45 Borate Fusion XRF
Hf, Hafnium (ppm) < 80 IND IND IND Borate Fusion XRF
K2O, Potassium oxide (wt.%) 1.73 0.027 1.71 1.76 Borate Fusion XRF
MgO, Magnesium oxide (wt.%) 10.57 0.234 10.42 10.73 Borate Fusion XRF
MnO, Manganese oxide (wt.%) 0.158 0.004 0.152 0.165 Borate Fusion XRF
Na2O, Sodium oxide (wt.%) 2.07 0.084 2.00 2.14 Borate Fusion XRF
Ni, Nickel (wt.%) 0.247 0.014 0.235 0.259 Borate Fusion XRF
P2O5, Phosphorus(V) oxide (wt.%) 0.334 0.005 0.325 0.342 Borate Fusion XRF
S, Sulphur (wt.%) 0.376 0.031 0.355 0.396 Borate Fusion XRF
SiO2, Silicon dioxide (wt.%) 48.89 0.622 48.40 49.39 Borate Fusion XRF
Sn, Tin (ppm) < 50 IND IND IND Borate Fusion XRF
Sr, Strontium (ppm) 482 29 461 502 Borate Fusion XRF
TiO2, Titanium dioxide (wt.%) 0.999 0.017 0.981 1.016 Borate Fusion XRF
V2O5, Vanadium(V) oxide (ppm) 437 67 375 499 Borate Fusion XRF
Zn, Zinc (ppm) 134 13 117 150 Borate Fusion XRF
LOI1000, Loss on ignition @1000 °C (wt.%) 2.46 0.216 2.34 2.58 Thermogravimetry
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