OREAS 181

OREAS 181 has been prepared from a blend of low and high grade Ni-Co lateritic ores sourced from the Bulong deposit located 35km east of Kalgoorlie in Western Australia. This ore formed from prolonged lateritic weathering of Archaean (Yilgarn Craton) olivine rich ultramafic/komatiite flows. Grades of >1% Ni were generated in zones of more intense weathering associated with faulting and bedrock alteration. The Ni-Co nontronitic (Fe-Ni smectite clays) siliceous ores at Bulong formed with a goethitic overprint in the upper laterite profile.

Analyte Certified Value 1SD 95% Confidence Limits Low 95% Confidence Limits High Method
Ni, Nickel (ppm) 5123 59 5091 5155 Borate Fusion XRF
Co, Cobalt (ppm) 451 11 446 456 Borate Fusion XRF
Sc, Scandium (ppm) 38.2 1.27 37.4 38.9 Borate / Peroxide Fusion ICP
Al2O3, Aluminium(III) oxide (wt.%) 11.56 0.118 11.49 11.62 Borate Fusion XRF
CaO, Calcium oxide (wt.%) 2.37 0.020 2.36 2.38 Borate Fusion XRF
Cr2O3, Chromium(III) oxide (wt.%) 1.24 0.016 1.23 1.25 Borate Fusion XRF
Cu, Copper (ppm) 74 13 66 82 Borate Fusion XRF
Fe2O3, Iron(III) oxide (wt.%) 35.94 0.205 35.85 36.04 Borate Fusion XRF
K2O, Potassium oxide (wt.%) 0.132 0.005 0.129 0.135 Borate Fusion XRF
MgO, Magnesium oxide (wt.%) 2.05 0.041 2.03 2.08 Borate Fusion XRF
MnO, Manganese oxide (wt.%) 0.168 0.005 0.166 0.171 Borate Fusion XRF
Na2O, Sodium oxide (wt.%) 0.448 0.020 0.436 0.459 Borate Fusion XRF
P2O5, Phosphorus(V) oxide (wt.%) 0.017 0.003 0.015 0.018 Borate Fusion XRF
SiO2, Silicon dioxide (wt.%) 33.79 0.114 33.74 33.83 Borate Fusion XRF
SO3, Sulphur trioxide (wt.%) 0.189 0.008 0.181 0.197 Borate Fusion XRF
TiO2, Titanium dioxide (wt.%) 0.339 0.008 0.335 0.343 Borate Fusion XRF
Zn, Zinc (ppm) 96 7.8 91 102 Borate Fusion XRF
LOI1000, Loss On Ignition @1000 °C (wt.%) 11.26 0.339 11.06 11.46 Thermogravimetry
Al2O3, Aluminium(III) oxide (wt.%) 11.31 0.352 11.10 11.52 Borate / Peroxide Fusion ICP
Ba, Barium (ppm) 135 9 130 139 Borate / Peroxide Fusion ICP
CaO, Calcium oxide (wt.%) 2.37 0.106 2.31 2.43 Borate / Peroxide Fusion ICP
Cd, Cadmium (ppm) < 10.0 IND IND IND Borate / Peroxide Fusion ICP
Ce, Cerium (ppm) 12.3 1.2 11.0 13.7 Borate / Peroxide Fusion ICP
Co, Cobalt (ppm) 451 10 447 454 Borate / Peroxide Fusion ICP
Cr2O3, Chromium(III) oxide (wt.%) 1.23 0.043 1.20 1.25 Borate / Peroxide Fusion ICP
Cs, Caesium (ppm) 0.57 0.035 0.55 0.59 Borate / Peroxide Fusion ICP
Cu, Copper (ppm) 77 4.4 74 80 Borate / Peroxide Fusion ICP
Eu, Europium (ppm) 0.43 0.08 0.34 0.52 Borate / Peroxide Fusion ICP
Fe2O3, Iron(III) oxide (wt.%) 35.34 0.895 34.83 35.86 Borate / Peroxide Fusion ICP
Ga, Gallium (ppm) 10.5 0.79 9.7 11.2 Borate / Peroxide Fusion ICP
Gd, Gadolinium (ppm) 1.35 0.21 1.12 1.57 Borate / Peroxide Fusion ICP
Hf, Hafnium (ppm) 1.74 0.22 1.46 2.02 Borate / Peroxide Fusion ICP
Ho, Holmium (ppm) 0.27 0.03 0.24 0.29 Borate / Peroxide Fusion ICP
K2O, Potassium oxide (wt.%) 0.125 0.015 0.116 0.133 Borate / Peroxide Fusion ICP
La, Lanthanum (ppm) 4.04 0.58 3.42 4.66 Borate / Peroxide Fusion ICP
Li, Lithium (ppm) 12.3 1.6 10.7 13.9 Borate / Peroxide Fusion ICP
MgO, Magnesium oxide (wt.%) 2.01 0.062 1.97 2.05 Borate / Peroxide Fusion ICP
MnO, Manganese oxide (wt.%) 0.166 0.007 0.162 0.169 Borate / Peroxide Fusion ICP
Mo, Molybdenum (ppm) < 5.00 IND IND IND Borate / Peroxide Fusion ICP
Na2O, Sodium oxide (wt.%) 0.420 0.036 0.380 0.460 Borate / Peroxide Fusion ICP
Nb, Niobium (ppm) 1.96 0.38 1.63 2.30 Borate / Peroxide Fusion ICP
Nd, Neodymium (ppm) 5.30 0.53 4.87 5.72 Borate / Peroxide Fusion ICP
Ni, Nickel (ppm) 5048 126 5012 5084 Borate / Peroxide Fusion ICP
Pr, Praseodymium (ppm) 1.29 0.17 1.15 1.43 Borate / Peroxide Fusion ICP
Rb, Rubidium (ppm) 5.61 0.384 5.38 5.84 Borate / Peroxide Fusion ICP
S, Sulphur (wt.%) 0.071 0.006 0.067 0.074 Borate / Peroxide Fusion ICP
Sb, Antimony (ppm) 1.19 0.16 1.10 1.28 Borate / Peroxide Fusion ICP
SiO2, Silicon dioxide (wt.%) 33.32 1.050 32.64 34.01 Borate / Peroxide Fusion ICP
Sm, Samarium (ppm) 1.36 0.22 1.15 1.57 Borate / Peroxide Fusion ICP
Sr, Strontium (ppm) 87 5.1 84 90 Borate / Peroxide Fusion ICP
Tb, Terbium (ppm) 0.22 0.04 0.20 0.25 Borate / Peroxide Fusion ICP
Th, Thorium (ppm) 2.72 0.128 2.60 2.83 Borate / Peroxide Fusion ICP
TiO2, Titanium dioxide (wt.%) 0.333 0.015 0.325 0.341 Borate / Peroxide Fusion ICP
U, Uranium (ppm) 0.98 0.073 0.93 1.03 Borate / Peroxide Fusion ICP
V, Vanadium (ppm) 146 15 135 157 Borate / Peroxide Fusion ICP
W, Tungsten (ppm) 3.22 0.38 2.95 3.50 Borate / Peroxide Fusion ICP
Y, Yttrium (ppm) 5.73 0.64 5.39 6.07 Borate / Peroxide Fusion ICP
Yb, Ytterbium (ppm) 0.89 0.080 0.84 0.94 Borate / Peroxide Fusion ICP
Zn, Zinc (ppm) 100 10 91 108 Borate / Peroxide Fusion ICP
Zr, Zirconium (ppm) 61 4.9 57 66 Borate / Peroxide Fusion ICP
C, Carbon (wt.%) 0.653 0.028 0.635 0.671 Infrared Combustion
S, Sulphur (wt.%) 0.059 0.012 0.052 0.067 Infrared Combustion
SG, Specific Gravity (Unity) 2.87 0.155 2.74 3.00 Gas / Liquid Pycnometry
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