OREAS 922b

OREAS 922b was prepared from material from the CSA mine located near the town of Cobar in central western New South Wales, Australia. The copper ore body 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. The certification program includes:

  • 4-acid digestion with full suite elemental packages by ICP-OES and ICP-MS finish
  • Aqua regia digestion for full elemental suite by ICP-OES and ICP-MS finish
  • Lithium borate fusion whole rock analysis package by X-ray fluorescence finish
  • Thermogravimetry: Loss on Ignition (LOI) at 1000 °C
  • Lithium borate or sodium peroxide fusion with full suite elemental packages by ICP-OES and ICP-MS finish
  • C and S by infrared combustion furnace/CS analyser
Analyte Certified Value 1SD Expanded Uncertainty Low Expanded Uncertainty High Method
Cu, Copper (wt.%) 0.219 0.007 0.214 0.225 4-Acid Digestion
Ag, Silver (ppm) 1.17 0.074 1.10 1.25 4-Acid Digestion
Zn, Zinc (ppm) 75 3.8 72 78 4-Acid Digestion
Al, Aluminium (wt.%) 6.36 0.210 6.20 6.52 4-Acid Digestion
As, Arsenic (ppm) 54 2.8 52 56 4-Acid Digestion
Ba, Barium (wt.%) 0.191 0.010 0.184 0.198 4-Acid Digestion
Be, Beryllium (ppm) 2.30 0.117 2.20 2.41 4-Acid Digestion
Bi, Bismuth (ppm) 12.2 0.58 11.8 12.7 4-Acid Digestion
Ca, Calcium (wt.%) 0.040 0.001 0.039 0.041 4-Acid Digestion
Cd, Cadmium (ppm) 0.078 0.021 0.051 0.106 4-Acid Digestion
Ce, Cerium (ppm) 79 4.0 75 83 4-Acid Digestion
Co, Cobalt (ppm) 3.70 0.254 3.47 3.94 4-Acid Digestion
Cr, Chromium (ppm) 79 7.7 75 84 4-Acid Digestion
Cs, Caesium (ppm) 4.59 0.182 4.36 4.83 4-Acid Digestion
Dy, Dysprosium (ppm) 3.28 0.195 3.05 3.51 4-Acid Digestion
Er, Erbium (ppm) 1.72 0.080 1.56 1.88 4-Acid Digestion
Eu, Europium (ppm) 1.21 0.072 1.11 1.31 4-Acid Digestion
Fe, Iron (wt.%) 3.10 0.076 3.03 3.16 4-Acid Digestion
Ga, Gallium (ppm) 18.8 0.96 18.0 19.6 4-Acid Digestion
Gd, Gadolinium (ppm) 4.87 0.269 4.43 5.31 4-Acid Digestion
Ge, Germanium (ppm) 0.14 0.02 0.10 0.18 4-Acid Digestion
Hf, Hafnium (ppm) 2.52 0.154 2.39 2.64 4-Acid Digestion
Ho, Holmium (ppm) 0.60 0.059 0.51 0.69 4-Acid Digestion
In, Indium (ppm) 0.25 0.013 0.24 0.26 4-Acid Digestion
K, Potassium (wt.%) 2.59 0.101 2.53 2.65 4-Acid Digestion
La, Lanthanum (ppm) 42.5 2.35 40.7 44.4 4-Acid Digestion
Li, Lithium (ppm) 23.9 0.83 23.1 24.6 4-Acid Digestion
Lu, Lutetium (ppm) 0.27 0.010 0.25 0.29 4-Acid Digestion
Mg, Magnesium (wt.%) 0.407 0.012 0.397 0.417 4-Acid Digestion
Mn, Manganese (wt.%) 0.011 0.000 0.011 0.011 4-Acid Digestion
Mo, Molybdenum (ppm) 5.01 0.274 4.78 5.24 4-Acid Digestion
Na, Sodium (wt.%) 0.096 0.013 0.088 0.105 4-Acid Digestion
Nb, Niobium (ppm) 5.75 1.01 5.02 6.47 4-Acid Digestion
Nd, Neodymium (ppm) 35.0 0.76 33.6 36.3 4-Acid Digestion
Ni, Nickel (ppm) 12.2 0.74 11.4 13.1 4-Acid Digestion
P, Phosphorus (wt.%) 0.033 0.002 0.032 0.035 4-Acid Digestion
Pb, Lead (ppm) 43.5 3.76 41.1 45.9 4-Acid Digestion
Pr, Praseodymium (ppm) 9.46 0.178 9.13 9.79 4-Acid Digestion
Rb, Rubidium (ppm) 152 9 147 158 4-Acid Digestion
Re, Rhenium (ppm) < 0.002 IND IND IND 4-Acid Digestion
S, Sulphur (wt.%) 0.274 0.013 0.264 0.283 4-Acid Digestion
Sb, Antimony (ppm) 3.75 0.217 3.44 4.07 4-Acid Digestion
Sc, Scandium (ppm) 11.5 0.66 10.8 12.3 4-Acid Digestion
Se, Selenium (ppm) 4.90 0.51 4.30 5.50 4-Acid Digestion
Sm, Samarium (ppm) 6.48 0.218 6.06 6.90 4-Acid Digestion
Sn, Tin (ppm) 5.76 0.237 5.55 5.97 4-Acid Digestion
Sr, Strontium (ppm) 43.1 1.62 41.5 44.6 4-Acid Digestion
Ta, Tantalum (ppm) 0.46 0.11 0.38 0.53 4-Acid Digestion
Tb, Terbium (ppm) 0.63 0.08 0.56 0.71 4-Acid Digestion
Te, Tellurium (ppm) 0.084 0.018 0.063 0.104 4-Acid Digestion
Th, Thorium (ppm) 14.3 0.78 13.5 15.0 4-Acid Digestion
Ti, Titanium (wt.%) 0.224 0.020 0.211 0.237 4-Acid Digestion
Tl, Thallium (ppm) 0.94 0.046 0.90 0.99 4-Acid Digestion
Tm, Thulium (ppm) 0.23 0.03 0.18 0.28 4-Acid Digestion
U, Uranium (ppm) 4.29 0.235 4.11 4.47 4-Acid Digestion
V, Vanadium (ppm) 184 9 177 191 4-Acid Digestion
W, Tungsten (ppm) 2.80 0.259 2.59 3.02 4-Acid Digestion
Y, Yttrium (ppm) 16.4 0.78 15.7 17.1 4-Acid Digestion
Yb, Ytterbium (ppm) 1.67 0.102 1.53 1.81 4-Acid Digestion
Zr, Zirconium (ppm) 85 4.0 80 90 4-Acid Digestion
Ag, Silver (ppm) 0.973 0.058 0.924 1.021 Aqua Regia Digestion
Al, Aluminium (wt.%) 0.793 0.060 0.758 0.828 Aqua Regia Digestion
As, Arsenic (ppm) 52 2.0 50 54 Aqua Regia Digestion
Au, Gold (ppm) < 0.020 IND IND IND Aqua Regia Digestion
B, Boron (ppm) < 10.0 IND IND IND Aqua Regia Digestion
Ba, Barium (ppm) 188 18 175 200 Aqua Regia Digestion
Be, Beryllium (ppm) 0.47 0.042 0.42 0.51 Aqua Regia Digestion
Bi, Bismuth (ppm) 12.0 0.91 11.5 12.6 Aqua Regia Digestion
Ca, Calcium (wt.%) 0.036 0.006 0.034 0.039 Aqua Regia Digestion
Cd, Cadmium (ppm) 0.072 0.011 0.061 0.083 Aqua Regia Digestion
Ce, Cerium (ppm) 60 3.4 57 63 Aqua Regia Digestion
Co, Cobalt (ppm) 3.41 0.192 3.25 3.57 Aqua Regia Digestion
Cr, Chromium (ppm) 19.7 1.52 17.6 21.9 Aqua Regia Digestion
Cs, Caesium (ppm) 1.11 0.17 1.00 1.23 Aqua Regia Digestion
Cu, Copper (wt.%) 0.221 0.005 0.214 0.227 Aqua Regia Digestion
Fe, Iron (wt.%) 2.86 0.103 2.78 2.95 Aqua Regia Digestion
Ga, Gallium (ppm) 2.42 0.31 2.21 2.63 Aqua Regia Digestion
Ge, Germanium (ppm) 0.10 0.02 0.08 0.13 Aqua Regia Digestion
Hf, Hafnium (ppm) 0.32 0.04 0.28 0.35 Aqua Regia Digestion
Hg, Mercury (ppm) 0.023 0.006 0.014 0.031 Aqua Regia Digestion
In, Indium (ppm) 0.20 0.009 0.19 0.21 Aqua Regia Digestion
K, Potassium (wt.%) 0.281 0.021 0.268 0.294 Aqua Regia Digestion
La, Lanthanum (ppm) 28.5 1.31 27.4 29.6 Aqua Regia Digestion
Li, Lithium (ppm) 3.81 0.46 3.42 4.19 Aqua Regia Digestion
Lu, Lutetium (ppm) 0.098 0.008 0.086 0.110 Aqua Regia Digestion
Mg, Magnesium (wt.%) 0.130 0.010 0.122 0.137 Aqua Regia Digestion
Mn, Manganese (wt.%) 0.009 0.000 0.008 0.009 Aqua Regia Digestion
Mo, Molybdenum (ppm) 4.73 0.305 4.54 4.93 Aqua Regia Digestion
Na, Sodium (wt.%) 0.010 0.002 0.009 0.011 Aqua Regia Digestion
Nb, Niobium (ppm) 0.069 0.010 0.055 0.083 Aqua Regia Digestion
Ni, Nickel (ppm) 9.31 0.444 8.57 10.04 Aqua Regia Digestion
P, Phosphorus (wt.%) 0.029 0.002 0.027 0.030 Aqua Regia Digestion
Pb, Lead (ppm) 29.6 3.7 27.7 31.5 Aqua Regia Digestion
Rb, Rubidium (ppm) 16.7 1.56 15.6 17.8 Aqua Regia Digestion
Re, Rhenium (ppm) < 0.001 IND IND IND Aqua Regia Digestion
S, Sulphur (wt.%) 0.271 0.011 0.263 0.279 Aqua Regia Digestion
Sb, Antimony (ppm) 2.27 0.50 2.02 2.53 Aqua Regia Digestion
Sc, Scandium (ppm) 2.03 0.199 1.87 2.19 Aqua Regia Digestion
Se, Selenium (ppm) 4.45 0.354 4.02 4.89 Aqua Regia Digestion
Sn, Tin (ppm) 2.42 0.160 2.30 2.54 Aqua Regia Digestion
Sr, Strontium (ppm) 9.04 1.37 8.13 9.94 Aqua Regia Digestion
Ta, Tantalum (ppm) < 0.010 IND IND IND Aqua Regia Digestion
Tb, Terbium (ppm) 0.42 0.039 0.36 0.47 Aqua Regia Digestion
Te, Tellurium (ppm) 0.059 0.011 0.040 0.077 Aqua Regia Digestion
Th, Thorium (ppm) 9.91 0.667 9.47 10.34 Aqua Regia Digestion
Ti, Titanium (wt.%) 0.011 0.002 0.010 0.013 Aqua Regia Digestion
Tl, Thallium (ppm) 0.14 0.02 0.12 0.15 Aqua Regia Digestion
U, Uranium (ppm) 2.27 0.154 2.17 2.37 Aqua Regia Digestion
V, Vanadium (ppm) 22.3 2.3 20.8 23.8 Aqua Regia Digestion
W, Tungsten (ppm) 0.75 0.11 0.67 0.83 Aqua Regia Digestion
Y, Yttrium (ppm) 7.29 0.527 6.92 7.65 Aqua Regia Digestion
Yb, Ytterbium (ppm) 0.71 0.068 0.61 0.81 Aqua Regia Digestion
Zn, Zinc (ppm) 66 3.2 63 69 Aqua Regia Digestion
Zr, Zirconium (ppm) 11.2 1.3 10.5 12.0 Aqua Regia Digestion
Al2O3, Aluminium(III) oxide (wt.%) 12.40 0.115 12.23 12.57 Borate Fusion XRF
BaO, Barium oxide (wt.%) 0.221 0.013 0.206 0.236 Borate Fusion XRF
Bi, Bismuth (ppm) < 100 IND IND IND Borate Fusion XRF
CaO, Calcium oxide (wt.%) 0.054 0.007 0.045 0.064 Borate Fusion XRF
Co, Cobalt (ppm) < 100 IND IND IND Borate Fusion XRF
Cr2O3, Chromium(III) oxide (ppm) 141 8 129 154 Borate Fusion XRF
Cu, Copper (wt.%) 0.220 0.007 0.209 0.230 Borate Fusion XRF
Fe2O3, Iron(III) oxide (wt.%) 4.49 0.060 4.45 4.54 Borate Fusion XRF
Hf, Hafnium (ppm) < 80 IND IND IND Borate Fusion XRF
K2O, Potassium oxide (wt.%) 3.19 0.039 3.16 3.22 Borate Fusion XRF
MgO, Magnesium oxide (wt.%) 0.704 0.040 0.674 0.734 Borate Fusion XRF
Mo, Molybdenum (ppm) < 50 IND IND IND Borate Fusion XRF
Na2O, Sodium oxide (wt.%) 0.124 0.030 0.097 0.151 Borate Fusion XRF
Ni, Nickel (ppm) < 50 IND IND IND Borate Fusion XRF
P2O5, Phosphorus(V) oxide (wt.%) 0.076 0.006 0.067 0.084 Borate Fusion XRF
Rb, Rubidium (ppm) 125 29 82 168 Borate Fusion XRF
Sb, Antimony (ppm) < 50 IND IND IND Borate Fusion XRF
SiO2, Silicon dioxide (wt.%) 74.44 0.539 73.61 75.27 Borate Fusion XRF
Sn, Tin (ppm) < 50 IND IND IND Borate Fusion XRF
SO3, Sulphur trioxide (wt.%) 0.667 0.026 0.636 0.699 Borate Fusion XRF
SrO, Strontium oxide (ppm) 63 23 40 85 Borate Fusion XRF
TiO2, Titanium dioxide (wt.%) 0.528 0.018 0.513 0.543 Borate Fusion XRF
V, Vanadium (ppm) 161 46 125 197 Borate Fusion XRF
Zn, Zinc (ppm) 75 17 56 93 Borate Fusion XRF
Zr, Zirconium (ppm) 112 18 93 131 Borate Fusion XRF
LOI1000, Loss On Ignition @1000 °C (wt.%) 3.59 0.203 3.45 3.73 Thermogravimetry
Al, Aluminium (wt.%) 6.46 0.143 6.37 6.56 Borate / Peroxide Fusion ICP
As, Arsenic (ppm) 55 3.9 51 59 Borate / Peroxide Fusion ICP
Ba, Barium (wt.%) 0.195 0.007 0.188 0.202 Borate / Peroxide Fusion ICP
Be, Beryllium (ppm) 2.51 0.43 1.97 3.05 Borate / Peroxide Fusion ICP
Bi, Bismuth (ppm) 12.8 0.47 12.1 13.5 Borate / Peroxide Fusion ICP
Ca, Calcium (wt.%) 0.053 0.011 0.039 0.068 Borate / Peroxide Fusion ICP
Cd, Cadmium (ppm) < 10.0 IND IND IND Borate / Peroxide Fusion ICP
Ce, Cerium (ppm) 81 2.5 78 83 Borate / Peroxide Fusion ICP
Co, Cobalt (ppm) 3.70 0.309 3.34 4.06 Borate / Peroxide Fusion ICP
Cr2O3, Chromium(III) oxide (ppm) 130 13 115 145 Borate / Peroxide Fusion ICP
Cs, Caesium (ppm) 4.78 0.407 4.44 5.12 Borate / Peroxide Fusion ICP
Cu, Copper (wt.%) 0.220 0.007 0.213 0.226 Borate / Peroxide Fusion ICP
Dy, Dysprosium (ppm) 4.79 0.207 4.55 5.03 Borate / Peroxide Fusion ICP
Er, Erbium (ppm) 2.75 0.140 2.52 2.98 Borate / Peroxide Fusion ICP
Eu, Europium (ppm) 1.30 0.068 1.20 1.40 Borate / Peroxide Fusion ICP
Fe, Iron (wt.%) 3.14 0.068 3.08 3.21 Borate / Peroxide Fusion ICP
Ga, Gallium (ppm) 19.1 1.36 18.0 20.2 Borate / Peroxide Fusion ICP
Gd, Gadolinium (ppm) 5.51 0.276 5.29 5.73 Borate / Peroxide Fusion ICP
Ge, Germanium (ppm) 2.05 0.24 1.80 2.31 Borate / Peroxide Fusion ICP
Hf, Hafnium (ppm) 3.63 0.47 2.98 4.27 Borate / Peroxide Fusion ICP
Ho, Holmium (ppm) 0.97 0.034 0.92 1.01 Borate / Peroxide Fusion ICP
In, Indium (ppm) 0.27 0.06 0.15 0.39 Borate / Peroxide Fusion ICP
K, Potassium (wt.%) 2.62 0.098 2.56 2.69 Borate / Peroxide Fusion ICP
La, Lanthanum (ppm) 43.0 1.30 41.5 44.6 Borate / Peroxide Fusion ICP
Li, Lithium (ppm) 25.1 2.04 22.8 27.4 Borate / Peroxide Fusion ICP
Lu, Lutetium (ppm) 0.42 0.04 0.36 0.47 Borate / Peroxide Fusion ICP
Mg, Magnesium (wt.%) 0.418 0.012 0.406 0.429 Borate / Peroxide Fusion ICP
Mn, Manganese (wt.%) 0.010 0.001 0.010 0.011 Borate / Peroxide Fusion ICP
Mo, Molybdenum (ppm) 5.19 0.55 4.14 6.24 Borate / Peroxide Fusion ICP
Nb, Niobium (ppm) 11.0 0.95 9.8 12.1 Borate / Peroxide Fusion ICP
Nd, Neodymium (ppm) 36.0 1.25 34.5 37.5 Borate / Peroxide Fusion ICP
P, Phosphorus (wt.%) 0.032 0.004 0.026 0.037 Borate / Peroxide Fusion ICP
Pb, Lead (ppm) 46.4 6.3 40.3 52.5 Borate / Peroxide Fusion ICP
Pr, Praseodymium (ppm) 9.89 0.293 9.49 10.28 Borate / Peroxide Fusion ICP
Rb, Rubidium (ppm) 154 3 151 158 Borate / Peroxide Fusion ICP
S, Sulphur (wt.%) 0.267 0.016 0.253 0.281 Borate / Peroxide Fusion ICP
Sb, Antimony (ppm) 4.03 0.55 3.24 4.82 Borate / Peroxide Fusion ICP
Sc, Scandium (ppm) 10.8 0.65 9.9 11.7 Borate / Peroxide Fusion ICP
Si, Silicon (wt.%) 35.21 1.216 34.25 36.18 Borate / Peroxide Fusion ICP
Sm, Samarium (ppm) 6.84 0.340 6.42 7.26 Borate / Peroxide Fusion ICP
Sn, Tin (ppm) 6.27 0.618 5.00 7.55 Borate / Peroxide Fusion ICP
Sr, Strontium (ppm) 47.6 4.9 43.9 51.3 Borate / Peroxide Fusion ICP
Ta, Tantalum (ppm) 0.97 0.16 0.82 1.11 Borate / Peroxide Fusion ICP
Tb, Terbium (ppm) 0.90 0.13 0.72 1.08 Borate / Peroxide Fusion ICP
Th, Thorium (ppm) 13.9 0.76 13.2 14.6 Borate / Peroxide Fusion ICP
Ti, Titanium (wt.%) 0.310 0.009 0.301 0.318 Borate / Peroxide Fusion ICP
Tl, Thallium (ppm) 0.99 0.079 0.87 1.11 Borate / Peroxide Fusion ICP
Tm, Thulium (ppm) 0.40 0.014 0.37 0.43 Borate / Peroxide Fusion ICP
U, Uranium (ppm) 4.54 0.216 4.29 4.78 Borate / Peroxide Fusion ICP
V, Vanadium (ppm) 193 9 184 201 Borate / Peroxide Fusion ICP
W, Tungsten (ppm) 4.07 1.16 2.84 5.30 Borate / Peroxide Fusion ICP
Y, Yttrium (ppm) 26.6 1.49 25.2 28.0 Borate / Peroxide Fusion ICP
Yb, Ytterbium (ppm) 2.72 0.175 2.56 2.88 Borate / Peroxide Fusion ICP
Zn, Zinc (ppm) 76 8 62 89 Borate / Peroxide Fusion ICP
Zr, Zirconium (ppm) 130 7 121 140 Borate / Peroxide Fusion ICP
C, Carbon (wt.%) 0.766 0.018 0.750 0.781 Infrared Combustion
S, Sulphur (wt.%) 0.264 0.014 0.253 0.276 Infrared Combustion
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