Specifications
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CRM State:
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Matrix:
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Mineralisation:
OREAS 602b was prepared from a blend of silver-copper-gold bearing ores from Evolution Mining’s Mount Carlton Operation in Queensland, Australia and argillic rhyodacite waste rock sourced from a quarry east of Melbourne, Australia. Small quantities of copper concentrate (Sepon, Laos) and copper-gold concentrate (Mount Carlton) were added to help achieve the desired copper and gold 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 advanced argillic altered rhyodacite containing sulphur-salts.
Twenty five commercial analytical laboratories participated in the program to certify the elements reported in Table 1. The following methods were employed:
Analyte | Certified Value | 1SD | 95% Confidence Limits Low | 95% Confidence Limits High | Method |
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Ag, Silver (ppm) | 119 | 4 | 118 | 121 | 4-Acid Digestion |
Cu, Copper (wt.%) | 0.496 | 0.010 | 0.492 | 0.501 | 4-Acid Digestion |
Au, Gold (ppm) | 2.29 | 0.094 | 2.25 | 2.33 | Pb Fire Assay |
Ag, Silver (ppm) | 118 | 4 | 116 | 120 | Pb Fire Assay |
Au, Gold (ppm) | 2.27 | 0.083 | 2.21 | 2.33 | Aqua Regia Digestion (sample weights 10-50g) |
S, Sulphur (wt.%) | 2.15 | 0.092 | 2.11 | 2.19 | Infrared Combustion |
Al, Aluminium (wt.%) | 5.38 | 0.169 | 5.31 | 5.45 | 4-Acid Digestion |
As, Arsenic (ppm) | 874 | 47 | 852 | 896 | 4-Acid Digestion |
Be, Beryllium (ppm) | 1.69 | 0.20 | 1.59 | 1.80 | 4-Acid Digestion |
Bi, Bismuth (ppm) | 58 | 4.3 | 56 | 60 | 4-Acid Digestion |
Ca, Calcium (wt.%) | 0.655 | 0.027 | 0.643 | 0.666 | 4-Acid Digestion |
Cd, Cadmium (ppm) | 4.89 | 0.290 | 4.75 | 5.04 | 4-Acid Digestion |
Ce, Cerium (ppm) | 51 | 4.7 | 49 | 54 | 4-Acid Digestion |
Co, Cobalt (ppm) | 5.08 | 0.243 | 4.97 | 5.19 | 4-Acid Digestion |
Cr, Chromium (ppm) | 33.5 | 4.1 | 31.6 | 35.3 | 4-Acid Digestion |
Cs, Caesium (ppm) | 3.64 | 0.171 | 3.55 | 3.72 | 4-Acid Digestion |
Dy, Dysprosium (ppm) | 2.06 | 0.25 | 1.79 | 2.33 | 4-Acid Digestion |
Er, Erbium (ppm) | 0.68 | 0.065 | 0.60 | 0.75 | 4-Acid Digestion |
Eu, Europium (ppm) | 0.80 | 0.14 | 0.65 | 0.96 | 4-Acid Digestion |
Fe, Iron (wt.%) | 2.52 | 0.085 | 2.49 | 2.56 | 4-Acid Digestion |
Ga, Gallium (ppm) | 24.3 | 1.50 | 23.6 | 25.0 | 4-Acid Digestion |
Gd, Gadolinium (ppm) | 3.12 | 0.238 | 2.85 | 3.40 | 4-Acid Digestion |
Ge, Germanium (ppm) | 0.16 | 0.03 | 0.12 | 0.20 | 4-Acid Digestion |
Hf, Hafnium (ppm) | 4.21 | 0.273 | 4.07 | 4.35 | 4-Acid Digestion |
Ho, Holmium (ppm) | 0.29 | 0.018 | 0.27 | 0.31 | 4-Acid Digestion |
In, Indium (ppm) | 1.50 | 0.091 | 1.45 | 1.54 | 4-Acid Digestion |
K, Potassium (wt.%) | 1.78 | 0.038 | 1.77 | 1.80 | 4-Acid Digestion |
La, Lanthanum (ppm) | 23.5 | 2.15 | 22.4 | 24.5 | 4-Acid Digestion |
Li, Lithium (ppm) | 20.3 | 1.45 | 19.7 | 20.9 | 4-Acid Digestion |
Lu, Lutetium (ppb) | 62.5 | 11.2 | 42.9 | 82.1 | 4-Acid Digestion |
Mg, Magnesium (ppm) | 759 | 53 | 737 | 781 | 4-Acid Digestion |
Mn, Manganese (ppm) | 188 | 7 | 185 | 191 | 4-Acid Digestion |
Mo, Molybdenum (ppm) | 7.45 | 0.327 | 7.31 | 7.59 | 4-Acid Digestion |
Na, Sodium (wt.%) | 1.40 | 0.065 | 1.37 | 1.42 | 4-Acid Digestion |
Nb, Niobium (ppm) | 12.0 | 0.72 | 11.7 | 12.4 | 4-Acid Digestion |
Nd, Neodymium (ppm) | 21.8 | 1.86 | 19.5 | 24.1 | 4-Acid Digestion |
Ni, Nickel (ppm) | 14.2 | 0.82 | 13.8 | 14.6 | 4-Acid Digestion |
P, Phosphorus (ppm) | 279 | 21 | 269 | 288 | 4-Acid Digestion |
Pb, Lead (ppm) | 493 | 19 | 485 | 501 | 4-Acid Digestion |
Pr, Praseodymium (ppm) | 6.52 | 0.450 | 5.98 | 7.06 | 4-Acid Digestion |
Rb, Rubidium (ppm) | 72 | 3.3 | 71 | 74 | 4-Acid Digestion |
S, Sulphur (wt.%) | 2.13 | 0.060 | 2.10 | 2.15 | 4-Acid Digestion |
Sb, Antimony (ppm) | 105 | 8 | 101 | 108 | 4-Acid Digestion |
Sc, Scandium (ppm) | 3.56 | 0.182 | 3.46 | 3.66 | 4-Acid Digestion |
Se, Selenium (ppm) | 24.1 | 2.5 | 22.9 | 25.3 | 4-Acid Digestion |
Sm, Samarium (ppm) | 4.26 | 0.50 | 3.72 | 4.80 | 4-Acid Digestion |
Sn, Tin (ppm) | 8.96 | 0.391 | 8.75 | 9.18 | 4-Acid Digestion |
Sr, Strontium (ppm) | 260 | 13 | 254 | 266 | 4-Acid Digestion |
Ta, Tantalum (ppm) | 0.93 | 0.043 | 0.91 | 0.96 | 4-Acid Digestion |
Tb, Terbium (ppm) | 0.43 | 0.04 | 0.39 | 0.46 | 4-Acid Digestion |
Te, Tellurium (ppm) | 34.4 | 2.64 | 33.1 | 35.7 | 4-Acid Digestion |
Th, Thorium (ppm) | 9.11 | 0.900 | 8.61 | 9.61 | 4-Acid Digestion |
Ti, Titanium (wt.%) | 0.149 | 0.009 | 0.146 | 0.153 | 4-Acid Digestion |
Tl, Thallium (ppm) | 2.17 | 0.162 | 2.08 | 2.25 | 4-Acid Digestion |
U, Uranium (ppm) | 3.80 | 0.216 | 3.69 | 3.91 | 4-Acid Digestion |
V, Vanadium (ppm) | 15.8 | 1.10 | 15.3 | 16.3 | 4-Acid Digestion |
W, Tungsten (ppm) | 13.8 | 0.90 | 13.4 | 14.2 | 4-Acid Digestion |
Y, Yttrium (ppm) | 8.69 | 0.350 | 8.54 | 8.84 | 4-Acid Digestion |
Yb, Ytterbium (ppm) | 0.51 | 0.07 | 0.43 | 0.59 | 4-Acid Digestion |
Zn, Zinc (ppm) | 764 | 24 | 755 | 773 | 4-Acid Digestion |
Zr, Zirconium (ppm) | 149 | 8 | 145 | 152 | 4-Acid Digestion |
Ag, Silver (ppm) | 119 | 3 | 118 | 120 | Aqua Regia Digestion |
Al, Aluminium (wt.%) | 0.546 | 0.019 | 0.537 | 0.555 | Aqua Regia Digestion |
As, Arsenic (ppm) | 857 | 43 | 838 | 876 | Aqua Regia Digestion |
Be, Beryllium (ppm) | 0.34 | 0.04 | 0.32 | 0.36 | Aqua Regia Digestion |
Bi, Bismuth (ppm) | 57 | 3.4 | 55 | 58 | Aqua Regia Digestion |
Ca, Calcium (wt.%) | 0.418 | 0.015 | 0.412 | 0.425 | Aqua Regia Digestion |
Cd, Cadmium (ppm) | 4.93 | 0.279 | 4.78 | 5.07 | Aqua Regia Digestion |
Ce, Cerium (ppm) | 28.4 | 1.57 | 27.5 | 29.3 | Aqua Regia Digestion |
Co, Cobalt (ppm) | 4.78 | 0.225 | 4.69 | 4.87 | Aqua Regia Digestion |
Cr, Chromium (ppm) | 35.3 | 3.34 | 33.8 | 36.8 | Aqua Regia Digestion |
Cs, Caesium (ppm) | 0.83 | 0.045 | 0.80 | 0.85 | Aqua Regia Digestion |
Cu, Copper (wt.%) | 0.495 | 0.015 | 0.489 | 0.502 | Aqua Regia Digestion |
Fe, Iron (wt.%) | 2.26 | 0.110 | 2.21 | 2.31 | Aqua Regia Digestion |
Ga, Gallium (ppm) | 4.47 | 0.434 | 4.22 | 4.72 | Aqua Regia Digestion |
Ge, Germanium (ppm) | 0.11 | 0.02 | 0.09 | 0.14 | Aqua Regia Digestion |
Hf, Hafnium (ppm) | 0.91 | 0.083 | 0.86 | 0.96 | Aqua Regia Digestion |
Hg, Mercury (ppm) | 0.48 | 0.034 | 0.46 | 0.50 | Aqua Regia Digestion |
In, Indium (ppm) | 1.43 | 0.063 | 1.40 | 1.46 | Aqua Regia Digestion |
K, Potassium (wt.%) | 0.182 | 0.012 | 0.176 | 0.188 | Aqua Regia Digestion |
La, Lanthanum (ppm) | 14.4 | 0.85 | 14.0 | 14.8 | Aqua Regia Digestion |
Li, Lithium (ppm) | 6.04 | 0.61 | 5.73 | 6.36 | Aqua Regia Digestion |
Mg, Magnesium (ppm) | 340 | 50 | 320 | 361 | Aqua Regia Digestion |
Mn, Manganese (ppm) | 163 | 8 | 159 | 166 | Aqua Regia Digestion |
Mo, Molybdenum (ppm) | 7.11 | 0.348 | 6.94 | 7.29 | Aqua Regia Digestion |
Na, Sodium (wt.%) | 0.052 | 0.008 | 0.048 | 0.055 | Aqua Regia Digestion |
Ni, Nickel (ppm) | 14.1 | 0.94 | 13.7 | 14.6 | Aqua Regia Digestion |
P, Phosphorus (ppm) | 139 | 8 | 135 | 143 | Aqua Regia Digestion |
Pb, Lead (ppm) | 378 | 21 | 368 | 387 | Aqua Regia Digestion |
Rb, Rubidium (ppm) | 8.65 | 0.614 | 8.26 | 9.03 | Aqua Regia Digestion |
S, Sulphur (wt.%) | 1.56 | 0.081 | 1.53 | 1.60 | Aqua Regia Digestion |
Sb, Antimony (ppm) | 86 | 9 | 82 | 90 | Aqua Regia Digestion |
Sc, Scandium (ppm) | 0.93 | 0.10 | 0.88 | 0.98 | Aqua Regia Digestion |
Se, Selenium (ppm) | 23.6 | 1.82 | 22.6 | 24.6 | Aqua Regia Digestion |
Sn, Tin (ppm) | 6.98 | 0.240 | 6.87 | 7.09 | Aqua Regia Digestion |
Sr, Strontium (ppm) | 33.9 | 2.93 | 32.4 | 35.4 | Aqua Regia Digestion |
Te, Tellurium (ppm) | 35.5 | 1.51 | 34.7 | 36.3 | Aqua Regia Digestion |
Th, Thorium (ppm) | 5.15 | 0.64 | 4.79 | 5.51 | Aqua Regia Digestion |
Ti, Titanium (ppm) | 163 | 16 | 153 | 173 | Aqua Regia Digestion |
Tl, Thallium (ppm) | 1.89 | 0.149 | 1.81 | 1.97 | Aqua Regia Digestion |
U, Uranium (ppm) | 1.72 | 0.097 | 1.66 | 1.77 | Aqua Regia Digestion |
V, Vanadium (ppm) | 5.01 | 0.57 | 4.75 | 5.27 | Aqua Regia Digestion |
W, Tungsten (ppm) | 5.82 | 0.543 | 5.56 | 6.09 | Aqua Regia Digestion |
Y, Yttrium (ppm) | 4.00 | 0.303 | 3.85 | 4.16 | Aqua Regia Digestion |
Yb, Ytterbium (ppm) | 0.17 | 0.03 | 0.15 | 0.20 | Aqua Regia Digestion |
Zn, Zinc (ppm) | 722 | 29 | 709 | 734 | Aqua Regia Digestion |
Zr, Zirconium (ppm) | 30.8 | 5.9 | 28.1 | 33.6 | Aqua Regia Digestion |
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