OREAS 197

OREAS 197 has been prepared from a blend of scandium mineralised laterite sourced from the Nyngan (Gilgai and Honeybugle) deposits, located about 450kms northwest of Sydney (Australia), supplemented with ferruginous soil (sourced from soils developed over Tertiary tholeiitic basalt in eastern Melbourne, Australia) and a small quantity of low grade, Ni-Co laterite ore sourced from the Bulong deposit, 35km east of Kalgoorlie in Western Australia.

The Nyngan scandium ore is sourced from the upper lateritic zone consisting haematitic and limonitic clays from humid weathering of mafic/ultramafic rocks.

The Bulong 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
Sc, Scandium (ppm) 203 7 199 206 Borate / Peroxide Fusion ICP
Co, Cobalt (ppm) 331 9 327 336 Borate / Peroxide Fusion ICP
Ni, Nickel (ppm) 524 27 510 539 Borate / Peroxide Fusion ICP
Al2O3, Aluminium(III) oxide (wt.%) 17.10 0.153 17.02 17.19 Borate Fusion XRF
CaO, Calcium oxide (wt.%) 1.02 0.010 1.01 1.03 Borate Fusion XRF
Co, Cobalt (ppm) 327 13 320 334 Borate Fusion XRF
Cr2O3, Chromium(III) oxide (wt.%) 0.170 0.004 0.168 0.173 Borate Fusion XRF
Cu, Copper (ppm) 257 25 239 275 Borate Fusion XRF
Fe2O3, Iron(III) oxide (wt.%) 37.85 0.266 37.72 37.98 Borate Fusion XRF
K2O, Potassium oxide (wt.%) 0.228 0.009 0.223 0.233 Borate Fusion XRF
MgO, Magnesium oxide (wt.%) 2.32 0.049 2.29 2.35 Borate Fusion XRF
MnO, Manganese oxide (wt.%) 0.927 0.013 0.919 0.934 Borate Fusion XRF
Na2O, Sodium oxide (wt.%) 0.178 0.011 0.171 0.186 Borate Fusion XRF
Ni, Nickel (ppm) 522 43 504 540 Borate Fusion XRF
P2O5, Phosphorus(V) oxide (wt.%) 0.173 0.005 0.170 0.177 Borate Fusion XRF
Sc, Scandium (ppm) 205 6 201 209 Borate Fusion XRF
SiO2, Silicon dioxide (wt.%) 28.35 0.203 28.24 28.45 Borate Fusion XRF
SO3, Sulphur trioxide (wt.%) 0.063 0.008 0.053 0.073 Borate Fusion XRF
TiO2, Titanium dioxide (wt.%) 1.30 0.025 1.29 1.32 Borate Fusion XRF
Zn, Zinc (ppm) 149 7 144 153 Borate Fusion XRF
LOI1000, Loss On Ignition @1000 °C (wt.%) 10.10 0.173 10.00 10.20 Thermogravimetry
Al2O3, Aluminium(III) oxide (wt.%) 16.94 0.362 16.71 17.17 Borate / Peroxide Fusion ICP
Ba, Barium (ppm) 244 8 239 249 Borate / Peroxide Fusion ICP
CaO, Calcium oxide (wt.%) 1.03 0.067 0.99 1.06 Borate / Peroxide Fusion ICP
Ce, Cerium (ppm) 48.5 1.82 46.2 50.8 Borate / Peroxide Fusion ICP
Cr2O3, Chromium(III) oxide (wt.%) 0.170 0.008 0.166 0.174 Borate / Peroxide Fusion ICP
Cs, Caesium (ppm) 0.99 0.030 0.98 1.00 Borate / Peroxide Fusion ICP
Cu, Copper (ppm) 262 17 251 274 Borate / Peroxide Fusion ICP
Er, Erbium (ppm) 1.55 0.123 1.43 1.68 Borate / Peroxide Fusion ICP
Fe2O3, Iron(III) oxide (wt.%) 37.45 0.685 37.14 37.77 Borate / Peroxide Fusion ICP
Ga, Gallium (ppm) 22.4 1.81 20.7 24.0 Borate / Peroxide Fusion ICP
Hf, Hafnium (ppm) 2.38 0.130 2.28 2.48 Borate / Peroxide Fusion ICP
Ho, Holmium (ppm) 0.51 0.06 0.47 0.54 Borate / Peroxide Fusion ICP
K2O, Potassium oxide (wt.%) 0.230 0.033 0.209 0.251 Borate / Peroxide Fusion ICP
La, Lanthanum (ppm) 7.55 0.571 6.96 8.14 Borate / Peroxide Fusion ICP
Li, Lithium (ppm) 17.6 1.45 16.2 19.0 Borate / Peroxide Fusion ICP
MgO, Magnesium oxide (wt.%) 2.27 0.072 2.23 2.31 Borate / Peroxide Fusion ICP
MnO, Manganese oxide (wt.%) 0.910 0.028 0.895 0.924 Borate / Peroxide Fusion ICP
Mo, Molybdenum (ppm) 2.65 0.58 2.01 3.30 Borate / Peroxide Fusion ICP
Na2O, Sodium oxide (wt.%) 0.162 0.019 0.139 0.184 Borate / Peroxide Fusion ICP
Nb, Niobium (ppm) 4.91 0.455 4.48 5.34 Borate / Peroxide Fusion ICP
Nd, Neodymium (ppm) 10.6 0.82 10.2 11.1 Borate / Peroxide Fusion ICP
P2O5, Phosphorus(V) oxide (wt.%) 0.170 0.012 0.165 0.176 Borate / Peroxide Fusion ICP
Pr, Praseodymium (ppm) 2.53 0.35 2.23 2.83 Borate / Peroxide Fusion ICP
Rb, Rubidium (ppm) 10.5 0.92 10.0 11.0 Borate / Peroxide Fusion ICP
SiO2, Silicon dioxide (wt.%) 27.70 0.485 27.38 28.02 Borate / Peroxide Fusion ICP
Sm, Samarium (ppm) 3.06 0.275 2.75 3.37 Borate / Peroxide Fusion ICP
Sr, Strontium (ppm) 78 3.8 75 80 Borate / Peroxide Fusion ICP
Ta, Tantalum (ppm) 0.40 0.07 0.36 0.45 Borate / Peroxide Fusion ICP
Tb, Terbium (ppm) 0.47 0.07 0.41 0.53 Borate / Peroxide Fusion ICP
Th, Thorium (ppm) 3.24 0.140 3.13 3.35 Borate / Peroxide Fusion ICP
TiO2, Titanium dioxide (wt.%) 1.28 0.051 1.25 1.31 Borate / Peroxide Fusion ICP
Tm, Thulium (ppm) 0.21 0.014 0.20 0.23 Borate / Peroxide Fusion ICP
U, Uranium (ppm) 1.22 0.13 1.10 1.33 Borate / Peroxide Fusion ICP
V, Vanadium (ppm) 502 29 481 523 Borate / Peroxide Fusion ICP
W, Tungsten (ppm) 3.28 0.51 2.64 3.92 Borate / Peroxide Fusion ICP
Y, Yttrium (ppm) 11.4 1.11 10.8 12.0 Borate / Peroxide Fusion ICP
Yb, Ytterbium (ppm) 1.47 0.099 1.44 1.50 Borate / Peroxide Fusion ICP
Zn, Zinc (ppm) 149 9 142 157 Borate / Peroxide Fusion ICP
Zr, Zirconium (ppm) 78 5.6 73 83 Borate / Peroxide Fusion ICP
C, Carbon (wt.%) 0.329 0.022 0.315 0.343 Infrared Combustion
SG, Specific Gravity (Unity) 3.09 0.100 2.99 3.18 Gas / Liquid Pycnometry
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