OREAS 682

OREAS 682 is a platinum group element (PGE) ore certified reference material (CRM) prepared and certified by Ore Research & Exploration Pty Ltd. OREAS 682 has been prepared from PGE ores blended with barren gabbro-norite. The PGE ores were sourced from the Merensky Reef and foot wall of the Merensky Reef of the Bushveld Complex, from sites owned and operated by Anglo American Platinum, South Africa. The common minerals of economic importance within a pegmatitic pyroxenite host are sulphides of iron, nickel, copper and alloys of the PGE’s. The barren gabbro-norite was sourced from the Late Cambrian Black Hill Norite Complex located 85km east of Adelaide, Australia. OREAS 682 is one of a suite of five PGE ore CRMs ranging in 4E concentrations (4E = 4 elements; platinum (Pt), palladium (Pd), rhodium (Rh) and gold (Au)) from 0.82 to 6.1ppm. 

Analyte Certified Value 1SD 95% Confidence Limits Low 95% Confidence Limits High Method
Au, Gold (ppb) 75.3 3.98 73.7 76.8 Pb Fire Assay
Pd, Palladium (ppb) 444 19 436 453 Pb Fire Assay
Pt, Platinum (ppb) 868 38 850 886 Pb Fire Assay
Au, Gold (ppb) 71.6 3.35 67.6 75.5 NiS Fire Assay
Ir, Iridium (ppb) 20.2 1.0 19.3 21.1 NiS Fire Assay
Pd, Palladium (ppb) 440 26 422 458 NiS Fire Assay
Pt, Platinum (ppb) 820 52 783 856 NiS Fire Assay
Rh, Rhodium (ppb) 60.3 1.9 59.0 61.7 NiS Fire Assay
Ru, Ruthenium (ppb) 112 10 105 120 NiS Fire Assay
Al, Aluminium (wt.%) 8.87 0.166 8.79 8.95 Peroxide Fusion ICP
Ba, Barium (ppm) 376 22 363 390 Peroxide Fusion ICP
Ca, Calcium (wt.%) 6.62 0.174 6.54 6.71 Peroxide Fusion ICP
Co, Cobalt (ppm) 52 3.8 51 53 Peroxide Fusion ICP
Cr, Chromium (ppm) 3701 157 3623 3780 Peroxide Fusion ICP
Cs, Caesium (ppm) 3.57 0.223 3.39 3.76 Peroxide Fusion ICP
Cu, Copper (ppm) 261 15 255 268 Peroxide Fusion ICP
Dy, Dysprosium (ppm) 2.92 0.219 2.74 3.09 Peroxide Fusion ICP
Er, Erbium (ppm) 1.62 0.147 1.53 1.71 Peroxide Fusion ICP
Eu, Europium (ppm) 1.25 0.102 1.16 1.33 Peroxide Fusion ICP
Fe, Iron (wt.%) 6.94 0.217 6.83 7.05 Peroxide Fusion ICP
Ga, Gallium (ppm) 18.3 1.04 17.6 18.9 Peroxide Fusion ICP
Gd, Gadolinium (ppm) 3.66 0.41 3.23 4.09 Peroxide Fusion ICP
Ho, Holmium (ppm) 0.55 0.06 0.52 0.58 Peroxide Fusion ICP
K, Potassium (wt.%) 1.18 0.047 1.15 1.20 Peroxide Fusion ICP
La, Lanthanum (ppm) 17.3 1.09 16.4 18.3 Peroxide Fusion ICP
Li, Lithium (ppm) 12.8 1.18 12.0 13.5 Peroxide Fusion ICP
Lu, Lutetium (ppm) 0.22 0.03 0.20 0.24 Peroxide Fusion ICP
Mg, Magnesium (wt.%) 4.95 0.157 4.86 5.03 Peroxide Fusion ICP
Mn, Manganese (wt.%) 0.120 0.004 0.118 0.123 Peroxide Fusion ICP
Nb, Niobium (ppm) 5.16 0.97 4.47 5.86 Peroxide Fusion ICP
Nd, Neodymium (ppm) 19.4 0.76 18.8 20.0 Peroxide Fusion ICP
Ni, Nickel (ppm) 572 30 556 588 Peroxide Fusion ICP
P, Phosphorus (wt.%) 0.123 0.010 0.117 0.129 Peroxide Fusion ICP
Pb, Lead (ppm) 10.1 1.8 8.2 12.0 Peroxide Fusion ICP
Pr, Praseodymium (ppm) 4.66 0.137 4.56 4.76 Peroxide Fusion ICP
Rb, Rubidium (ppm) 72 2.3 70 73 Peroxide Fusion ICP
S, Sulphur (wt.%) 0.111 0.018 0.101 0.120 Peroxide Fusion ICP
Sc, Scandium (ppm) 21.4 2.3 19.5 23.3 Peroxide Fusion ICP
Si, Silicon (wt.%) 23.96 0.524 23.71 24.20 Peroxide Fusion ICP
Sm, Samarium (ppm) 4.03 0.136 3.95 4.12 Peroxide Fusion ICP
Sr, Strontium (ppm) 455 20 441 468 Peroxide Fusion ICP
Tb, Terbium (ppm) 0.50 0.06 0.46 0.55 Peroxide Fusion ICP
Th, Thorium (ppm) 5.52 0.323 5.29 5.74 Peroxide Fusion ICP
Ti, Titanium (wt.%) 0.511 0.014 0.504 0.517 Peroxide Fusion ICP
Tm, Thulium (ppm) 0.23 0.019 0.21 0.25 Peroxide Fusion ICP
U, Uranium (ppm) 1.36 0.15 1.25 1.46 Peroxide Fusion ICP
V, Vanadium (ppm) 231 10 225 238 Peroxide Fusion ICP
Y, Yttrium (ppm) 15.4 0.44 15.0 15.7 Peroxide Fusion ICP
Yb, Ytterbium (ppm) 1.51 0.070 1.45 1.57 Peroxide Fusion ICP
Zn, Zinc (ppm) 90 21 75 105 Peroxide Fusion ICP
Ag, Silver (ppm) 0.117 0.018 0.102 0.132 4-Acid Digestion
Al, Aluminium (wt.%) 8.84 0.264 8.70 8.98 4-Acid Digestion
Ba, Barium (ppm) 389 6 387 392 4-Acid Digestion
Be, Beryllium (ppm) 1.24 0.18 1.14 1.34 4-Acid Digestion
Bi, Bismuth (ppm) 0.099 0.009 0.092 0.106 4-Acid Digestion
Ca, Calcium (wt.%) 6.40 0.269 6.25 6.54 4-Acid Digestion
Ce, Cerium (ppm) 35.9 1.59 35.0 36.7 4-Acid Digestion
Co, Cobalt (ppm) 50 2.3 49 52 4-Acid Digestion
Cr, Chromium (ppm) 2807 369 2625 2990 4-Acid Digestion
Cs, Caesium (ppm) 3.46 0.117 3.41 3.51 4-Acid Digestion
Cu, Copper (ppm) 258 10 253 262 4-Acid Digestion
Dy, Dysprosium (ppm) 2.95 0.086 2.88 3.03 4-Acid Digestion
Er, Erbium (ppm) 1.67 0.064 1.62 1.72 4-Acid Digestion
Eu, Europium (ppm) 1.21 0.090 1.14 1.28 4-Acid Digestion
Fe, Iron (wt.%) 6.78 0.206 6.69 6.88 4-Acid Digestion
Ga, Gallium (ppm) 17.9 0.52 17.6 18.3 4-Acid Digestion
Gd, Gadolinium (ppm) 3.51 0.252 3.31 3.71 4-Acid Digestion
Hf, Hafnium (ppm) 1.55 0.19 1.45 1.65 4-Acid Digestion
Ho, Holmium (ppm) 0.59 0.015 0.58 0.60 4-Acid Digestion
In, Indium (ppm) 0.038 0.005 0.035 0.041 4-Acid Digestion
K, Potassium (wt.%) 1.18 0.051 1.16 1.21 4-Acid Digestion
La, Lanthanum (ppm) 16.6 0.83 16.1 17.0 4-Acid Digestion
Li, Lithium (ppm) 11.5 0.40 11.3 11.7 4-Acid Digestion
Lu, Lutetium (ppm) 0.23 0.008 0.23 0.24 4-Acid Digestion
Mg, Magnesium (wt.%) 4.86 0.207 4.76 4.96 4-Acid Digestion
Mn, Manganese (wt.%) 0.116 0.005 0.114 0.119 4-Acid Digestion
Mo, Molybdenum (ppm) 1.45 0.19 1.36 1.55 4-Acid Digestion
Na, Sodium (wt.%) 1.60 0.044 1.57 1.62 4-Acid Digestion
Nb, Niobium (ppm) 5.43 0.361 5.24 5.62 4-Acid Digestion
Nd, Neodymium (ppm) 18.9 0.57 18.4 19.4 4-Acid Digestion
Ni, Nickel (ppm) 560 30 545 575 4-Acid Digestion
P, Phosphorus (wt.%) 0.122 0.006 0.119 0.125 4-Acid Digestion
Pb, Lead (ppm) 9.19 0.95 8.46 9.92 4-Acid Digestion
Pr, Praseodymium (ppm) 4.63 0.137 4.51 4.74 4-Acid Digestion
Rb, Rubidium (ppm) 70 3.8 68 72 4-Acid Digestion
S, Sulphur (wt.%) 0.114 0.009 0.109 0.119 4-Acid Digestion
Sb, Antimony (ppm) 0.20 0.05 0.17 0.23 4-Acid Digestion
Sc, Scandium (ppm) 23.7 1.53 22.7 24.6 4-Acid Digestion
Sm, Samarium (ppm) 4.05 0.308 3.80 4.31 4-Acid Digestion
Sn, Tin (ppm) 1.63 0.120 1.55 1.70 4-Acid Digestion
Sr, Strontium (ppm) 469 20 458 480 4-Acid Digestion
Ta, Tantalum (ppm) 0.38 0.032 0.35 0.40 4-Acid Digestion
Tb, Terbium (ppm) 0.52 0.036 0.49 0.54 4-Acid Digestion
Th, Thorium (ppm) 5.72 0.483 5.50 5.93 4-Acid Digestion
Ti, Titanium (wt.%) 0.503 0.018 0.494 0.512 4-Acid Digestion
Tl, Thallium (ppm) 0.15 0.007 0.15 0.15 4-Acid Digestion
Tm, Thulium (ppm) 0.24 0.011 0.23 0.25 4-Acid Digestion
U, Uranium (ppm) 1.28 0.090 1.24 1.31 4-Acid Digestion
V, Vanadium (ppm) 228 11 223 234 4-Acid Digestion
W, Tungsten (ppm) 1.08 0.095 1.03 1.12 4-Acid Digestion
Y, Yttrium (ppm) 14.9 1.01 14.4 15.5 4-Acid Digestion
Yb, Ytterbium (ppm) 1.52 0.078 1.47 1.56 4-Acid Digestion
Zn, Zinc (ppm) 84 5.2 81 86 4-Acid Digestion
Zr, Zirconium (ppm) 52 4.1 49 54 4-Acid Digestion
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