OREAS 609c

OREAS 609c was prepared from a blend of gold-copper-silver bearing ores from Evolution Mining’s Mount Carlton Operation in Queensland, Australia and barren rhyodacite rock sourced from a quarry east of Melbourne, Australia. A small amount of copper-gold-silver rich materials sourced from various ores/concentrates was also added to help achieve the desired grades.

The mineralisation assemblage at Mount Carlton consists of pyrite, enargite/tennantite, tetrahedrite, digenite, covellite, sphalerite, galena, alunite, dickite, kaolinite and vuggy silica, hosted in argillic altered rhyodacite containing sulphur-salts.

The certification program includes:

  • Au by fire assay with AAS or ICP finish
  • Au by aqua regia digestion with AAS or ICP finish
  • Full ICP-OES and MS elemental suites by 4-acid digestion
  • Full ICP-OES and MS elemental suites by aqua regia digestion
  • Total S by Infrared combustion furnace
Indicative values for Sulphate Sulphur and Sulphide Sulphur (among others) are also available.
Analyte Certified Value 1SD Expanded Uncertainty Low Expanded Uncertainty High Method
Au, Gold (ppm) 4.79 0.282 4.69 4.89 Pb Fire Assay
Ag, Silver (ppm) 24.0 0.87 23.3 24.8 4-Acid Digestion
Cu, Copper (wt.%) 0.478 0.015 0.463 0.493 4-Acid Digestion
Au, Gold (ppm) 4.99 0.260 4.89 5.10 Aqua Regia Digestion (sample weights 10-50g)
S, Sulphur (wt.%) 1.60 0.059 1.56 1.65 Infrared Combustion
Al, Aluminium (wt.%) 7.09 0.281 6.83 7.34 4-Acid Digestion
As, Arsenic (ppm) 884 45 847 920 4-Acid Digestion
Be, Beryllium (ppm) 2.69 0.170 2.56 2.81 4-Acid Digestion
Bi, Bismuth (ppm) 64 3.4 61 67 4-Acid Digestion
Ca, Calcium (wt.%) 1.09 0.036 1.05 1.13 4-Acid Digestion
Cd, Cadmium (ppm) 5.71 0.333 5.45 5.97 4-Acid Digestion
Ce, Cerium (ppm) 79 6.3 74 84 4-Acid Digestion
Co, Cobalt (ppm) 7.13 0.426 6.77 7.49 4-Acid Digestion
Cr, Chromium (ppm) 15.9 1.7 14.2 17.5 4-Acid Digestion
Cs, Caesium (ppm) 5.86 0.311 5.60 6.12 4-Acid Digestion
Dy, Dysprosium (ppm) 3.27 0.101 3.09 3.45 4-Acid Digestion
Er, Erbium (ppm) 0.99 0.045 0.92 1.05 4-Acid Digestion
Eu, Europium (ppm) 1.16 0.038 1.09 1.24 4-Acid Digestion
Fe, Iron (wt.%) 3.00 0.096 2.89 3.12 4-Acid Digestion
Ga, Gallium (ppm) 23.2 1.52 22.1 24.3 4-Acid Digestion
Gd, Gadolinium (ppm) 5.18 0.234 4.90 5.46 4-Acid Digestion
Ge, Germanium (ppm) 0.25 0.10 0.18 0.31 4-Acid Digestion
Hf, Hafnium (ppm) 6.27 0.241 5.99 6.54 4-Acid Digestion
Ho, Holmium (ppm) 0.46 0.031 0.42 0.50 4-Acid Digestion
In, Indium (ppm) 1.32 0.077 1.26 1.38 4-Acid Digestion
K, Potassium (wt.%) 2.76 0.103 2.67 2.85 4-Acid Digestion
La, Lanthanum (ppm) 38.7 3.76 36.0 41.3 4-Acid Digestion
Li, Lithium (ppm) 21.6 0.80 20.8 22.4 4-Acid Digestion
Lu, Lutetium (ppm) 0.080 0.010 0.065 0.094 4-Acid Digestion
Mg, Magnesium (wt.%) 0.119 0.006 0.112 0.126 4-Acid Digestion
Mn, Manganese (wt.%) 0.025 0.001 0.024 0.026 4-Acid Digestion
Mo, Molybdenum (ppm) 40.1 1.75 38.5 41.6 4-Acid Digestion
Na, Sodium (wt.%) 2.22 0.077 2.15 2.29 4-Acid Digestion
Nb, Niobium (ppm) 16.5 1.24 15.5 17.5 4-Acid Digestion
Nd, Neodymium (ppm) 34.6 2.51 32.2 37.1 4-Acid Digestion
Ni, Nickel (ppm) 15.6 0.79 15.0 16.3 4-Acid Digestion
P, Phosphorus (wt.%) 0.029 0.001 0.028 0.030 4-Acid Digestion
Pb, Lead (ppm) 366 23 352 380 4-Acid Digestion
Pr, Praseodymium (ppm) 9.24 0.653 8.64 9.85 4-Acid Digestion
Rb, Rubidium (ppm) 125 5 120 131 4-Acid Digestion
Re, Rhenium (ppm) 0.029 0.002 0.025 0.033 4-Acid Digestion
S, Sulphur (wt.%) 1.58 0.064 1.52 1.63 4-Acid Digestion
Sb, Antimony (ppm) 152 12 146 159 4-Acid Digestion
Sc, Scandium (ppm) 4.18 0.43 3.88 4.48 4-Acid Digestion
Se, Selenium (ppm) 10.2 0.49 9.4 11.0 4-Acid Digestion
Sm, Samarium (ppm) 6.52 0.446 6.04 7.01 4-Acid Digestion
Sn, Tin (ppm) 9.53 0.522 9.01 10.04 4-Acid Digestion
Sr, Strontium (ppm) 194 13 187 202 4-Acid Digestion
Ta, Tantalum (ppm) 1.22 0.114 1.13 1.31 4-Acid Digestion
Tb, Terbium (ppm) 0.70 0.07 0.63 0.76 4-Acid Digestion
Te, Tellurium (ppm) 11.9 0.93 11.1 12.7 4-Acid Digestion
Th, Thorium (ppm) 13.2 1.07 12.4 14.0 4-Acid Digestion
Ti, Titanium (wt.%) 0.116 0.005 0.111 0.121 4-Acid Digestion
Tl, Thallium (ppm) 1.14 0.057 1.08 1.20 4-Acid Digestion
Tm, Thulium (ppm) 0.10 0.004 0.10 0.11 4-Acid Digestion
U, Uranium (ppm) 4.86 0.179 4.66 5.06 4-Acid Digestion
V, Vanadium (ppm) 8.85 0.636 8.19 9.51 4-Acid Digestion
W, Tungsten (ppm) 3.29 0.235 3.06 3.52 4-Acid Digestion
Y, Yttrium (ppm) 13.4 0.65 12.7 14.1 4-Acid Digestion
Yb, Ytterbium (ppm) 0.58 0.054 0.52 0.64 4-Acid Digestion
Zn, Zinc (ppm) 1078 49 1040 1116 4-Acid Digestion
Zr, Zirconium (ppm) 238 14 228 249 4-Acid Digestion
Ag, Silver (ppm) 24.0 1.07 23.1 24.8 Aqua Regia Digestion
Al, Aluminium (wt.%) 0.561 0.041 0.532 0.590 Aqua Regia Digestion
As, Arsenic (ppm) 852 48 826 877 Aqua Regia Digestion
B, Boron (ppm) < 10.0 IND IND IND Aqua Regia Digestion
Be, Beryllium (ppm) 0.62 0.057 0.57 0.67 Aqua Regia Digestion
Bi, Bismuth (ppm) 65 4.9 62 68 Aqua Regia Digestion
Ca, Calcium (wt.%) 0.845 0.031 0.818 0.872 Aqua Regia Digestion
Cd, Cadmium (ppm) 5.57 0.263 5.33 5.81 Aqua Regia Digestion
Ce, Cerium (ppm) 37.4 4.2 34.4 40.5 Aqua Regia Digestion
Co, Cobalt (ppm) 6.36 0.365 6.09 6.64 Aqua Regia Digestion
Cr, Chromium (ppm) 15.9 0.86 14.7 17.1 Aqua Regia Digestion
Cs, Caesium (ppm) 0.97 0.10 0.91 1.04 Aqua Regia Digestion
Cu, Copper (wt.%) 0.478 0.013 0.468 0.488 Aqua Regia Digestion
Dy, Dysprosium (ppm) 1.34 0.18 1.13 1.55 Aqua Regia Digestion
Er, Erbium (ppm) 0.38 0.05 0.32 0.44 Aqua Regia Digestion
Eu, Europium (ppm) 0.50 0.09 0.41 0.59 Aqua Regia Digestion
Fe, Iron (wt.%) 2.29 0.146 2.20 2.39 Aqua Regia Digestion
Ga, Gallium (ppm) 3.96 0.55 3.63 4.30 Aqua Regia Digestion
Gd, Gadolinium (ppm) 2.30 0.40 1.91 2.69 Aqua Regia Digestion
Ge, Germanium (ppm) 0.089 0.026 0.061 0.117 Aqua Regia Digestion
Hf, Hafnium (ppm) 1.36 0.14 1.26 1.46 Aqua Regia Digestion
Hg, Mercury (ppm) 0.34 0.021 0.32 0.37 Aqua Regia Digestion
Ho, Holmium (ppm) 0.18 0.02 0.15 0.20 Aqua Regia Digestion
In, Indium (ppm) 1.26 0.074 1.19 1.33 Aqua Regia Digestion
K, Potassium (wt.%) 0.243 0.019 0.231 0.255 Aqua Regia Digestion
La, Lanthanum (ppm) 18.3 2.2 16.9 19.8 Aqua Regia Digestion
Li, Lithium (ppm) 5.21 0.62 4.79 5.63 Aqua Regia Digestion
Lu, Lutetium (ppm) 0.026 0.004 0.020 0.033 Aqua Regia Digestion
Mg, Magnesium (wt.%) 0.042 0.004 0.040 0.044 Aqua Regia Digestion
Mn, Manganese (wt.%) 0.023 0.001 0.022 0.023 Aqua Regia Digestion
Mo, Molybdenum (ppm) 39.5 1.95 38.0 41.1 Aqua Regia Digestion
Na, Sodium (wt.%) 0.064 0.006 0.058 0.070 Aqua Regia Digestion
Nb, Niobium (ppm) 0.59 0.18 0.48 0.71 Aqua Regia Digestion
Nd, Neodymium (ppm) 14.5 3.5 11.5 17.5 Aqua Regia Digestion
Ni, Nickel (ppm) 15.5 0.92 14.8 16.2 Aqua Regia Digestion
P, Phosphorus (wt.%) 0.021 0.001 0.020 0.022 Aqua Regia Digestion
Pb, Lead (ppm) 330 13 320 340 Aqua Regia Digestion
Pr, Praseodymium (ppm) 4.03 0.72 3.30 4.76 Aqua Regia Digestion
Rb, Rubidium (ppm) 12.4 1.4 11.5 13.3 Aqua Regia Digestion
Re, Rhenium (ppm) 0.030 0.002 0.028 0.033 Aqua Regia Digestion
S, Sulphur (wt.%) 1.32 0.066 1.28 1.36 Aqua Regia Digestion
Sb, Antimony (ppm) 132 11 125 139 Aqua Regia Digestion
Sc, Scandium (ppm) 1.18 0.19 1.03 1.33 Aqua Regia Digestion
Se, Selenium (ppm) 9.94 0.464 9.34 10.55 Aqua Regia Digestion
Sm, Samarium (ppm) 2.74 0.56 2.21 3.27 Aqua Regia Digestion
Sn, Tin (ppm) 7.00 0.459 6.59 7.42 Aqua Regia Digestion
Sr, Strontium (ppm) 25.8 1.56 24.5 27.2 Aqua Regia Digestion
Ta, Tantalum (ppm) < 0.010 IND IND IND Aqua Regia Digestion
Tb, Terbium (ppm) 0.31 0.06 0.25 0.37 Aqua Regia Digestion
Te, Tellurium (ppm) 12.3 0.76 11.6 12.9 Aqua Regia Digestion
Th, Thorium (ppm) 6.73 1.01 6.18 7.27 Aqua Regia Digestion
Ti, Titanium (wt.%) 0.018 0.003 0.016 0.020 Aqua Regia Digestion
Tl, Thallium (ppm) 0.61 0.039 0.57 0.64 Aqua Regia Digestion
U, Uranium (ppm) 2.22 0.128 2.09 2.35 Aqua Regia Digestion
V, Vanadium (ppm) 3.98 0.141 3.80 4.17 Aqua Regia Digestion
W, Tungsten (ppm) 1.57 0.109 1.47 1.67 Aqua Regia Digestion
Y, Yttrium (ppm) 5.72 0.67 5.32 6.11 Aqua Regia Digestion
Yb, Ytterbium (ppm) 0.20 0.03 0.16 0.24 Aqua Regia Digestion
Zn, Zinc (ppm) 1022 36 991 1053 Aqua Regia Digestion
Zr, Zirconium (ppm) 51 9 46 56 Aqua Regia Digestion
S-(Sulphide), Sulphur as S2- (wt.%) 1.03 0.23 0.90 1.16 Alkaline Leach
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