OREAS 932b

OREAS 932b was prepared from a blend of barren black slate and copper ore. The barren black slate was sourced from a quarry located in Victoria, Australia and the copper ore was sourced from the CSA mine located near the town of Cobar in central western New South Wales, Australia. The copper ore body of the CSA mine is hosted by the Early Devonian CSA Siltstone, a thinly bedded turbiditic sequence of carbonaceous siltstones and mudstones with minor coarser units. The CSA Siltstone is part of the Cobar Supergroup, consisting of lower syn-rift sediments and upper post-rift sag phase sediments. The mineralisation is structurally controlled and confined to a number of steeply dipping bodies within a major shear zone on the eastern margin of the Early Devonian Cobar Basin. It is characterised by low-grade greenschist alteration and epigenetic low-grade mineralisation enveloping higher-grade shoots of vein complexes or sub-massive to massive sulphides. The sulphides include chalcopyrite, pyrrhotite, pyrite, sphalerite, galena, bornite and cubanite. Iron-rich chlorite and silica are prominent alterations in the siltstone host. Twenty-three commercial analytical laboratories participated in the following program:

  • 4-acid (HF-HNO3-HClO4-HCl) digestion for full ICP-OES and ICP-MS elemental suites
  • Aqua regia digestion for full ICP-OES and ICP-MS elemental suites
  • Peroxide fusion for full ICP-OES and ICP-MS elemental suites
  • Majors by oxidising fusion with X-ray fluorescence finish
  • S by infrared combustion furnace
Analyte Certified Value 1SD Expanded Uncertainty Low Expanded Uncertainty High Method
Cu, Copper (wt.%) 6.27 0.172 6.12 6.42 4-Acid Digestion
Ag, Silver (ppm) 26.8 0.81 26.0 27.6 4-Acid Digestion
Zn, Zinc (ppm) 426 19 414 438 4-Acid Digestion
Al, Aluminium (wt.%) 4.91 0.146 4.78 5.03 4-Acid Digestion
As, Arsenic (ppm) 88 4.0 85 92 4-Acid Digestion
Be, Beryllium (ppm) 1.79 0.135 1.69 1.89 4-Acid Digestion
Bi, Bismuth (ppm) 331 26 316 346 4-Acid Digestion
Ca, Calcium (wt.%) 0.125 0.006 0.121 0.130 4-Acid Digestion
Cd, Cadmium (ppm) 0.98 0.12 0.89 1.07 4-Acid Digestion
Ce, Cerium (ppm) 63 6.2 59 68 4-Acid Digestion
Co, Cobalt (ppm) 46.0 1.77 44.2 47.8 4-Acid Digestion
Cr, Chromium (ppm) 65 5.8 60 69 4-Acid Digestion
Cs, Caesium (ppm) 5.06 0.368 4.83 5.30 4-Acid Digestion
Dy, Dysprosium (ppm) 2.68 0.112 2.45 2.91 4-Acid Digestion
Er, Erbium (ppm) 1.31 0.061 1.21 1.42 4-Acid Digestion
Eu, Europium (ppm) 1.02 0.043 0.95 1.08 4-Acid Digestion
Fe, Iron (wt.%) 11.81 0.475 11.47 12.15 4-Acid Digestion
Ga, Gallium (ppm) 16.0 0.97 15.2 16.8 4-Acid Digestion
Gd, Gadolinium (ppm) 3.93 0.40 3.40 4.46 4-Acid Digestion
Hf, Hafnium (ppm) 1.63 0.104 1.49 1.76 4-Acid Digestion
Ho, Holmium (ppm) 0.44 0.05 0.36 0.53 4-Acid Digestion
In, Indium (ppm) 5.18 0.250 4.89 5.47 4-Acid Digestion
K, Potassium (wt.%) 1.87 0.075 1.83 1.92 4-Acid Digestion
La, Lanthanum (ppm) 29.2 4.0 26.7 31.6 4-Acid Digestion
Li, Lithium (ppm) 14.6 0.78 14.0 15.1 4-Acid Digestion
Lu, Lutetium (ppm) 0.20 0.018 0.17 0.23 4-Acid Digestion
Mg, Magnesium (wt.%) 0.380 0.025 0.366 0.393 4-Acid Digestion
Mn, Manganese (wt.%) 0.024 0.001 0.023 0.025 4-Acid Digestion
Mo, Molybdenum (ppm) 3.66 0.258 3.47 3.86 4-Acid Digestion
Na, Sodium (wt.%) 0.068 0.004 0.066 0.070 4-Acid Digestion
Nb, Niobium (ppm) 2.33 0.53 2.02 2.65 4-Acid Digestion
Nd, Neodymium (ppm) 27.9 1.39 25.7 30.1 4-Acid Digestion
Ni, Nickel (ppm) 13.5 0.83 12.8 14.1 4-Acid Digestion
P, Phosphorus (wt.%) 0.026 0.001 0.024 0.027 4-Acid Digestion
Pb, Lead (ppm) 176 8 170 182 4-Acid Digestion
Pr, Praseodymium (ppm) 7.00 1.02 5.91 8.09 4-Acid Digestion
Rb, Rubidium (ppm) 109 5 103 115 4-Acid Digestion
Re, Rhenium (ppm) 0.003 0.001 0.001 0.004 4-Acid Digestion
S, Sulphur (wt.%) 6.55 0.276 6.34 6.75 4-Acid Digestion
Sb, Antimony (ppm) 4.29 0.373 3.99 4.59 4-Acid Digestion
Sc, Scandium (ppm) 8.87 0.495 8.43 9.32 4-Acid Digestion
Se, Selenium (ppm) 71 7 66 75 4-Acid Digestion
Sm, Samarium (ppm) 5.19 0.487 4.64 5.73 4-Acid Digestion
Sn, Tin (ppm) 58 3.2 55 60 4-Acid Digestion
Sr, Strontium (ppm) 42.7 1.95 40.6 44.9 4-Acid Digestion
Ta, Tantalum (ppm) 0.16 0.02 0.14 0.19 4-Acid Digestion
Tb, Terbium (ppm) 0.53 0.047 0.50 0.57 4-Acid Digestion
Te, Tellurium (ppm) 0.22 0.03 0.17 0.26 4-Acid Digestion
Th, Thorium (ppm) 9.51 0.881 8.79 10.22 4-Acid Digestion
Ti, Titanium (wt.%) 0.131 0.012 0.123 0.139 4-Acid Digestion
Tl, Thallium (ppm) 0.64 0.034 0.61 0.68 4-Acid Digestion
Tm, Thulium (ppm) 0.18 0.02 0.16 0.21 4-Acid Digestion
U, Uranium (ppm) 3.10 0.179 2.96 3.24 4-Acid Digestion
V, Vanadium (ppm) 120 6 115 124 4-Acid Digestion
W, Tungsten (ppm) 29.5 1.90 28.1 30.9 4-Acid Digestion
Y, Yttrium (ppm) 12.2 1.9 11.2 13.3 4-Acid Digestion
Yb, Ytterbium (ppm) 1.24 0.14 1.09 1.39 4-Acid Digestion
Zr, Zirconium (ppm) 55 3.3 53 58 4-Acid Digestion
Ag, Silver (ppm) 26.9 2.09 25.9 27.9 Aqua Regia Digestion
Al, Aluminium (wt.%) 0.842 0.072 0.804 0.881 Aqua Regia Digestion
As, Arsenic (ppm) 84 5.0 80 87 Aqua Regia Digestion
Au, Gold (ppm) 0.018 0.003 0.016 0.020 Aqua Regia Digestion
B, Boron (ppm) < 10.0 IND IND IND Aqua Regia Digestion
Be, Beryllium (ppm) 0.40 0.05 0.35 0.45 Aqua Regia Digestion
Bi, Bismuth (ppm) 319 30 302 336 Aqua Regia Digestion
Ca, Calcium (wt.%) 0.120 0.006 0.115 0.125 Aqua Regia Digestion
Cd, Cadmium (ppm) 0.95 0.16 0.85 1.05 Aqua Regia Digestion
Ce, Cerium (ppm) 43.2 4.3 40.5 45.9 Aqua Regia Digestion
Co, Cobalt (ppm) 45.2 1.97 43.8 46.6 Aqua Regia Digestion
Cr, Chromium (ppm) 21.1 1.16 20.2 22.1 Aqua Regia Digestion
Cs, Caesium (ppm) 2.66 0.243 2.51 2.81 Aqua Regia Digestion
Cu, Copper (wt.%) 6.17 0.162 6.05 6.28 Aqua Regia Digestion
Fe, Iron (wt.%) 11.59 0.277 11.30 11.87 Aqua Regia Digestion
Ga, Gallium (ppm) 3.91 0.368 3.63 4.19 Aqua Regia Digestion
Ge, Germanium (ppm) 0.24 0.04 0.19 0.28 Aqua Regia Digestion
Hf, Hafnium (ppm) 0.32 0.022 0.30 0.35 Aqua Regia Digestion
Hg, Mercury (ppm) 0.16 0.03 0.14 0.19 Aqua Regia Digestion
In, Indium (ppm) 5.21 0.395 4.92 5.50 Aqua Regia Digestion
K, Potassium (wt.%) 0.185 0.020 0.174 0.197 Aqua Regia Digestion
La, Lanthanum (ppm) 16.3 1.9 15.1 17.5 Aqua Regia Digestion
Li, Lithium (ppm) 2.19 0.36 1.93 2.45 Aqua Regia Digestion
Lu, Lutetium (ppm) 0.086 0.013 0.065 0.106 Aqua Regia Digestion
Mg, Magnesium (wt.%) 0.185 0.017 0.176 0.195 Aqua Regia Digestion
Mn, Manganese (wt.%) 0.021 0.002 0.020 0.022 Aqua Regia Digestion
Mo, Molybdenum (ppm) 3.71 0.361 3.48 3.95 Aqua Regia Digestion
Na, Sodium (wt.%) 0.010 0.002 0.009 0.011 Aqua Regia Digestion
Nb, Niobium (ppm) 0.082 0.025 0.064 0.099 Aqua Regia Digestion
Ni, Nickel (ppm) 11.4 1.00 10.8 12.1 Aqua Regia Digestion
P, Phosphorus (wt.%) 0.020 0.002 0.019 0.021 Aqua Regia Digestion
Pb, Lead (ppm) 170 8 165 174 Aqua Regia Digestion
Rb, Rubidium (ppm) 14.9 2.4 13.5 16.2 Aqua Regia Digestion
Re, Rhenium (ppm) 0.002 0.000 0.002 0.003 Aqua Regia Digestion
S, Sulphur (wt.%) 6.65 0.635 6.24 7.05 Aqua Regia Digestion
Sb, Antimony (ppm) 2.94 0.47 2.66 3.21 Aqua Regia Digestion
Sc, Scandium (ppm) 1.56 0.18 1.42 1.71 Aqua Regia Digestion
Se, Selenium (ppm) 71 6.9 67 75 Aqua Regia Digestion
Sn, Tin (ppm) 52 3.1 49 54 Aqua Regia Digestion
Sr, Strontium (ppm) 14.9 1.8 13.9 16.0 Aqua Regia Digestion
Ta, Tantalum (ppm) < 0.010 IND IND IND Aqua Regia Digestion
Tb, Terbium (ppm) 0.32 0.04 0.26 0.38 Aqua Regia Digestion
Te, Tellurium (ppm) 0.21 0.020 0.19 0.24 Aqua Regia Digestion
Th, Thorium (ppm) 6.58 0.529 6.24 6.91 Aqua Regia Digestion
Ti, Titanium (wt.%) 0.008 0.002 0.007 0.009 Aqua Regia Digestion
Tl, Thallium (ppm) 0.12 0.009 0.11 0.13 Aqua Regia Digestion
U, Uranium (ppm) 1.90 0.112 1.82 1.97 Aqua Regia Digestion
V, Vanadium (ppm) 19.1 2.2 17.8 20.4 Aqua Regia Digestion
W, Tungsten (ppm) 24.3 3.0 22.8 25.8 Aqua Regia Digestion
Y, Yttrium (ppm) 5.30 0.53 4.99 5.62 Aqua Regia Digestion
Yb, Ytterbium (ppm) 0.56 0.046 0.50 0.61 Aqua Regia Digestion
Zn, Zinc (ppm) 406 12 394 418 Aqua Regia Digestion
Zr, Zirconium (ppm) 10.3 1.2 9.7 10.9 Aqua Regia Digestion
Al2O3, Aluminium(III) oxide (wt.%) 9.51 0.147 9.36 9.66 Borate Fusion XRF
BaO, Barium oxide (ppm) 1668 159 1555 1781 Borate Fusion XRF
CaO, Calcium oxide (wt.%) 0.171 0.014 0.159 0.184 Borate Fusion XRF
Cu, Copper (wt.%) 6.22 0.152 6.09 6.34 Borate Fusion XRF
Fe2O3, Iron(III) oxide (wt.%) 17.22 0.145 17.08 17.37 Borate Fusion XRF
K2O, Potassium oxide (wt.%) 2.21 0.133 2.03 2.39 Borate Fusion XRF
MgO, Magnesium oxide (wt.%) 0.665 0.072 0.563 0.767 Borate Fusion XRF
MnO, Manganese oxide (wt.%) 0.032 0.007 0.022 0.042 Borate Fusion XRF
S, Sulphur (wt.%) 6.82 0.361 6.55 7.09 Borate Fusion XRF
SiO2, Silicon dioxide (wt.%) 55.45 0.717 54.74 56.16 Borate Fusion XRF
Zn, Zinc (ppm) 407 48 361 453 Borate Fusion XRF
Al, Aluminium (wt.%) 5.05 0.113 4.94 5.15 Borate / Peroxide Fusion ICP
As, Arsenic (ppm) 87 7.0 78 96 Borate / Peroxide Fusion ICP
B, Boron (ppm) 103 12 76 130 Borate / Peroxide Fusion ICP
Ba, Barium (ppm) 1478 44 1437 1518 Borate / Peroxide Fusion ICP
Be, Beryllium (ppm) 1.98 0.128 1.77 2.19 Borate / Peroxide Fusion ICP
Bi, Bismuth (ppm) 339 17 322 356 Borate / Peroxide Fusion ICP
Ca, Calcium (wt.%) 0.129 0.025 0.101 0.157 Borate / Peroxide Fusion ICP
Ce, Cerium (ppm) 69 3.8 65 73 Borate / Peroxide Fusion ICP
Co, Cobalt (ppm) 44.0 4.6 41.9 46.1 Borate / Peroxide Fusion ICP
Cr, Chromium (ppm) 83 20 72 95 Borate / Peroxide Fusion ICP
Cs, Caesium (ppm) 5.16 0.223 4.86 5.46 Borate / Peroxide Fusion ICP
Cu, Copper (wt.%) 6.22 0.127 6.08 6.35 Borate / Peroxide Fusion ICP
Dy, Dysprosium (ppm) 3.78 0.218 3.36 4.19 Borate / Peroxide Fusion ICP
Er, Erbium (ppm) 2.11 0.144 1.93 2.29 Borate / Peroxide Fusion ICP
Eu, Europium (ppm) 1.14 0.12 1.00 1.28 Borate / Peroxide Fusion ICP
Fe, Iron (wt.%) 12.01 0.200 11.78 12.23 Borate / Peroxide Fusion ICP
Ga, Gallium (ppm) 16.3 1.04 15.4 17.1 Borate / Peroxide Fusion ICP
Gd, Gadolinium (ppm) 4.67 0.443 4.07 5.27 Borate / Peroxide Fusion ICP
Ge, Germanium (ppm) 2.09 0.52 1.43 2.75 Borate / Peroxide Fusion ICP
Ho, Holmium (ppm) 0.71 0.062 0.63 0.79 Borate / Peroxide Fusion ICP
In, Indium (ppm) 5.26 0.516 4.73 5.79 Borate / Peroxide Fusion ICP
K, Potassium (wt.%) 1.92 0.055 1.87 1.97 Borate / Peroxide Fusion ICP
La, Lanthanum (ppm) 33.5 3.11 30.6 36.3 Borate / Peroxide Fusion ICP
Li, Lithium (ppm) 16.4 2.5 14.1 18.8 Borate / Peroxide Fusion ICP
Lu, Lutetium (ppm) 0.31 0.020 0.27 0.35 Borate / Peroxide Fusion ICP
Mg, Magnesium (wt.%) 0.400 0.012 0.387 0.413 Borate / Peroxide Fusion ICP
Mn, Manganese (wt.%) 0.025 0.003 0.023 0.026 Borate / Peroxide Fusion ICP
Mo, Molybdenum (ppm) 4.28 1.29 3.02 5.53 Borate / Peroxide Fusion ICP
Nb, Niobium (ppm) 9.56 3.19 6.86 12.26 Borate / Peroxide Fusion ICP
Nd, Neodymium (ppm) 28.6 1.92 26.2 31.0 Borate / Peroxide Fusion ICP
P, Phosphorus (wt.%) 0.028 0.004 0.020 0.036 Borate / Peroxide Fusion ICP
Pb, Lead (ppm) 179 21 162 197 Borate / Peroxide Fusion ICP
Pr, Praseodymium (ppm) 7.74 0.397 7.22 8.26 Borate / Peroxide Fusion ICP
Rb, Rubidium (ppm) 107 6 102 113 Borate / Peroxide Fusion ICP
Re, Rhenium (ppm) < 0.10 IND IND IND Borate / Peroxide Fusion ICP
S, Sulphur (wt.%) 6.96 0.226 6.77 7.15 Borate / Peroxide Fusion ICP
Sb, Antimony (ppm) 4.37 0.52 3.83 4.92 Borate / Peroxide Fusion ICP
Sc, Scandium (ppm) 7.87 1.16 6.53 9.20 Borate / Peroxide Fusion ICP
Se, Selenium (ppm) 72 5.4 63 81 Borate / Peroxide Fusion ICP
Si, Silicon (wt.%) 26.63 0.869 26.04 27.22 Borate / Peroxide Fusion ICP
Sm, Samarium (ppm) 5.19 0.293 4.69 5.69 Borate / Peroxide Fusion ICP
Sn, Tin (ppm) 65 6.2 59 70 Borate / Peroxide Fusion ICP
Sr, Strontium (ppm) 49.7 2.82 46.6 52.9 Borate / Peroxide Fusion ICP
Ta, Tantalum (ppm) 0.72 0.13 0.59 0.85 Borate / Peroxide Fusion ICP
Tb, Terbium (ppm) 0.66 0.048 0.61 0.71 Borate / Peroxide Fusion ICP
Th, Thorium (ppm) 10.2 1.02 9.4 11.1 Borate / Peroxide Fusion ICP
Ti, Titanium (wt.%) 0.231 0.004 0.224 0.238 Borate / Peroxide Fusion ICP
Tl, Thallium (ppm) 0.65 0.07 0.54 0.76 Borate / Peroxide Fusion ICP
Tm, Thulium (ppm) 0.30 0.03 0.25 0.35 Borate / Peroxide Fusion ICP
U, Uranium (ppm) 3.42 0.35 3.15 3.68 Borate / Peroxide Fusion ICP
V, Vanadium (ppm) 126 7 119 133 Borate / Peroxide Fusion ICP
W, Tungsten (ppm) 28.0 4.8 24.4 31.6 Borate / Peroxide Fusion ICP
Y, Yttrium (ppm) 20.6 1.17 19.1 22.0 Borate / Peroxide Fusion ICP
Yb, Ytterbium (ppm) 1.99 0.127 1.84 2.14 Borate / Peroxide Fusion ICP
Zn, Zinc (ppm) 415 19 395 434 Borate / Peroxide Fusion ICP
S, Sulphur (wt.%) 7.02 0.151 6.90 7.14 Infrared Combustion
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