OREAS 13b

OREAS 13b was prepared from ores of platinum group elements (PGEs), copper, nickel and gold dispersed in a gabbro matrix.

The Gabbronorite was obtained from a mafic to ultramafic intrusion complex (Giles Complex) within Mesoproterozoic granulites of the Musgrave Province, about 120km west of Warburton, WA (Australia).

The nickel concentrate was sourced from Xstrata’s Cosmos mine (Western Australia), the copper concentrate from Glencore’s CSA Mine (New South Wales, Australia), the PGE ore from one of Anglo Platinum’s Merensky Reef mines (South Africa) and the gold ore from Newcrest’s Lihir mine (Papa New Guinea).

Analyte Certified Value 1SD 95% Confidence Low 95% Confidence High Method
Cu, Copper (ppm) 2327 48 2292 2361 4-Acid Digestion
Ni, Nickel (ppm) 2247 155 2156 2339 4-Acid Digestion
Pt, Platinum (ppb) 204 13 194 214 NiS Fire Assay
Au, Gold (ppb) 211 13 204 218 Pb Fire Assay
Pd, Palladium (ppb) 131 9 125 136 Pb Fire Assay
Pt, Platinum (ppb) 197 13 189 204 Pb Fire Assay
Au, Gold (ppb) 201 7 195 207 NiS Fire Assay
Ir, Iridium (ppb) 18 1 17 19 NiS Fire Assay
Os, Osmium (ppb) 12 2 9 15 NiS Fire Assay
Pd, Palladium (ppb) 134 4 131 136 NiS Fire Assay
Rh, Rhodium (ppb) 43 2 41 45 NiS Fire Assay
Ru, Ruthenium (ppb) 78 6 70 85 NiS Fire Assay
Al, Aluminium (wt.%) 8.41 0.140 8.33 8.50 Borate / Peroxide Fusion ICP
Ba, Barium (ppm) 694 6 687 701 Borate / Peroxide Fusion ICP
Ca, Calcium (wt.%) 5.57 0.090 5.51 5.63 Borate / Peroxide Fusion ICP
Cr, Chromium (wt.%) 1.08 0.040 1.06 1.11 Borate / Peroxide Fusion ICP
Fe, Iron (wt.%) 8.41 0.110 8.33 8.49 Borate / Peroxide Fusion ICP
K, Potassium (wt.%) 2.30 0.020 2.29 2.31 Borate / Peroxide Fusion ICP
LOI1000, Loss on ignition @1000°C (wt.%) 0.640 0.190 0.530 0.760 Borate / Peroxide Fusion ICP
Mg, Magnesium (wt.%) 3.01 0.040 2.99 3.04 Borate / Peroxide Fusion ICP
Mn, Manganese (wt.%) 0.130 0.006 0.127 0.134 Borate / Peroxide Fusion ICP
Na, Sodium (wt.%) 1.67 0.050 1.63 1.71 Borate / Peroxide Fusion ICP
P, Phosphorus (wt.%) 0.189 0.008 0.184 0.193 Borate / Peroxide Fusion ICP
S, Sulphur (wt.%) 1.19 0.030 1.15 1.22 Borate / Peroxide Fusion ICP
Si, Silicon (wt.%) 22.90 0.300 22.70 23.10 Borate / Peroxide Fusion ICP
Sr, Strontium (ppm) 537 8 533 541 Borate / Peroxide Fusion ICP
Ti, Titanium (wt.%) 0.711 0.009 0.705 0.716 Borate / Peroxide Fusion ICP
V, Vanadium (ppm) 330 32 305 355 Borate / Peroxide Fusion ICP
Zr, Zirconium (ppm) 108 8 101 116 Borate / Peroxide Fusion ICP
Ag, Silver (ppm) 0.860 0.100 0.790 0.930 4-Acid Digestion
As, Arsenic (ppm) 57 7 53 62 4-Acid Digestion
Co, Cobalt (ppm) 75 8 70 80 4-Acid Digestion
Cr, Chromium (wt.%) 0.865 0.099 0.801 0.928 4-Acid Digestion
Mo, Molybdenum (ppm) 9.00 0.600 8.60 9.50 4-Acid Digestion
S, Sulphur (wt.%) 1.20 0.050 1.16 1.23 4-Acid Digestion
Zn, Zinc (ppm) 133 12 126 140 4-Acid Digestion
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