Specifications
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CRM State:
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Matrix:
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Mineralisation:
OREAS 601b 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. A small amount of chalcocite-rich ore from the Sepon Mine in Laos was also added to help achieve the desired copper grade.
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 |
---|---|---|---|---|---|
Ag, Silver (ppm) | 50.1 | 1.74 | 49.4 | 50.9 | 4-Acid Digestion |
Cu, Copper (wt.%) | 0.101 | 0.002 | 0.100 | 0.102 | 4-Acid Digestion |
Au, Gold (ppm) | 0.775 | 0.021 | 0.767 | 0.782 | Pb Fire Assay |
Au, Gold (ppm) | 0.761 | 0.033 | 0.741 | 0.780 | Aqua Regia Digestion (sample weights 10-50g) |
S, Sulphur (wt.%) | 1.49 | 0.072 | 1.46 | 1.52 | Infrared Combustion |
Al, Aluminium (wt.%) | 6.63 | 0.223 | 6.53 | 6.73 | 4-Acid Digestion |
As, Arsenic (ppm) | 284 | 18 | 275 | 293 | 4-Acid Digestion |
Be, Beryllium (ppm) | 2.24 | 0.33 | 2.08 | 2.41 | 4-Acid Digestion |
Bi, Bismuth (ppm) | 18.0 | 1.14 | 17.4 | 18.6 | 4-Acid Digestion |
Ca, Calcium (wt.%) | 0.887 | 0.044 | 0.867 | 0.906 | 4-Acid Digestion |
Cd, Cadmium (ppm) | 2.05 | 0.111 | 2.00 | 2.10 | 4-Acid Digestion |
Ce, Cerium (ppm) | 70 | 8 | 65 | 75 | 4-Acid Digestion |
Co, Cobalt (ppm) | 2.97 | 0.184 | 2.89 | 3.06 | 4-Acid Digestion |
Cr, Chromium (ppm) | 23.7 | 3.0 | 22.3 | 25.1 | 4-Acid Digestion |
Cs, Caesium (ppm) | 4.88 | 0.185 | 4.79 | 4.97 | 4-Acid Digestion |
Dy, Dysprosium (ppm) | 2.54 | 0.160 | 2.38 | 2.71 | 4-Acid Digestion |
Er, Erbium (ppm) | 0.80 | 0.061 | 0.74 | 0.86 | 4-Acid Digestion |
Eu, Europium (ppm) | 0.97 | 0.11 | 0.83 | 1.11 | 4-Acid Digestion |
Fe, Iron (wt.%) | 2.29 | 0.081 | 2.25 | 2.32 | 4-Acid Digestion |
Ga, Gallium (ppm) | 23.4 | 1.78 | 22.5 | 24.2 | 4-Acid Digestion |
Gd, Gadolinium (ppm) | 4.14 | 0.311 | 3.78 | 4.50 | 4-Acid Digestion |
Ge, Germanium (ppm) | 0.15 | 0.04 | 0.10 | 0.20 | 4-Acid Digestion |
Hf, Hafnium (ppm) | 5.09 | 0.296 | 4.94 | 5.25 | 4-Acid Digestion |
Ho, Holmium (ppm) | 0.38 | 0.04 | 0.35 | 0.42 | 4-Acid Digestion |
In, Indium (ppm) | 0.47 | 0.026 | 0.46 | 0.48 | 4-Acid Digestion |
K, Potassium (wt.%) | 2.41 | 0.075 | 2.38 | 2.44 | 4-Acid Digestion |
La, Lanthanum (ppm) | 33.5 | 2.52 | 32.2 | 34.8 | 4-Acid Digestion |
Li, Lithium (ppm) | 22.6 | 1.98 | 21.7 | 23.4 | 4-Acid Digestion |
Lu, Lutetium (ppb) | 73.1 | 13.3 | 58.0 | 88.2 | 4-Acid Digestion |
Mg, Magnesium (ppm) | 996 | 66 | 968 | 1024 | 4-Acid Digestion |
Mn, Manganese (ppm) | 222 | 8 | 219 | 225 | 4-Acid Digestion |
Mo, Molybdenum (ppm) | 5.22 | 0.471 | 5.00 | 5.44 | 4-Acid Digestion |
Na, Sodium (wt.%) | 1.90 | 0.090 | 1.86 | 1.94 | 4-Acid Digestion |
Nb, Niobium (ppm) | 14.4 | 1.04 | 13.9 | 14.9 | 4-Acid Digestion |
Nd, Neodymium (ppm) | 28.5 | 2.19 | 25.6 | 31.4 | 4-Acid Digestion |
Ni, Nickel (ppm) | 6.54 | 0.67 | 6.16 | 6.91 | 4-Acid Digestion |
P, Phosphorus (ppm) | 292 | 15 | 286 | 297 | 4-Acid Digestion |
Pb, Lead (ppm) | 318 | 16 | 311 | 325 | 4-Acid Digestion |
Pr, Praseodymium (ppm) | 8.55 | 0.572 | 7.81 | 9.29 | 4-Acid Digestion |
Rb, Rubidium (ppm) | 98 | 3.5 | 96 | 99 | 4-Acid Digestion |
S, Sulphur (wt.%) | 1.50 | 0.036 | 1.48 | 1.51 | 4-Acid Digestion |
Sb, Antimony (ppm) | 22.9 | 2.09 | 21.9 | 23.9 | 4-Acid Digestion |
Sc, Scandium (ppm) | 3.77 | 0.239 | 3.64 | 3.90 | 4-Acid Digestion |
Se, Selenium (ppm) | 10.6 | 1.1 | 10.0 | 11.1 | 4-Acid Digestion |
Sm, Samarium (ppm) | 5.77 | 0.432 | 5.24 | 6.30 | 4-Acid Digestion |
Sn, Tin (ppm) | 3.36 | 0.177 | 3.26 | 3.45 | 4-Acid Digestion |
Sr, Strontium (ppm) | 241 | 12 | 235 | 247 | 4-Acid Digestion |
Ta, Tantalum (ppm) | 1.11 | 0.076 | 1.07 | 1.15 | 4-Acid Digestion |
Tb, Terbium (ppm) | 0.52 | 0.07 | 0.44 | 0.60 | 4-Acid Digestion |
Te, Tellurium (ppm) | 12.6 | 0.96 | 12.1 | 13.1 | 4-Acid Digestion |
Th, Thorium (ppm) | 11.9 | 0.82 | 11.5 | 12.3 | 4-Acid Digestion |
Ti, Titanium (wt.%) | 0.135 | 0.005 | 0.132 | 0.137 | 4-Acid Digestion |
Tl, Thallium (ppm) | 1.44 | 0.092 | 1.39 | 1.49 | 4-Acid Digestion |
Tm, Thulium (ppb) | < 100 | IND | IND | IND | 4-Acid Digestion |
U, Uranium (ppm) | 4.64 | 0.216 | 4.53 | 4.75 | 4-Acid Digestion |
V, Vanadium (ppm) | 12.1 | 0.88 | 11.7 | 12.6 | 4-Acid Digestion |
W, Tungsten (ppm) | 6.13 | 0.339 | 6.00 | 6.27 | 4-Acid Digestion |
Y, Yttrium (ppm) | 11.1 | 0.51 | 10.9 | 11.3 | 4-Acid Digestion |
Yb, Ytterbium (ppm) | 0.54 | 0.06 | 0.48 | 0.61 | 4-Acid Digestion |
Zn, Zinc (ppm) | 318 | 6 | 316 | 320 | 4-Acid Digestion |
Zr, Zirconium (ppm) | 186 | 11 | 181 | 191 | 4-Acid Digestion |
Ag, Silver (ppm) | 50.0 | 2.86 | 48.8 | 51.2 | Aqua Regia Digestion |
Al, Aluminium (wt.%) | 0.630 | 0.035 | 0.613 | 0.646 | Aqua Regia Digestion |
As, Arsenic (ppm) | 276 | 17 | 269 | 284 | Aqua Regia Digestion |
Be, Beryllium (ppm) | 0.47 | 0.041 | 0.46 | 0.49 | Aqua Regia Digestion |
Bi, Bismuth (ppm) | 18.0 | 1.58 | 17.3 | 18.8 | Aqua Regia Digestion |
Ca, Calcium (wt.%) | 0.578 | 0.030 | 0.565 | 0.591 | Aqua Regia Digestion |
Cd, Cadmium (ppm) | 2.04 | 0.177 | 1.95 | 2.13 | Aqua Regia Digestion |
Ce, Cerium (ppm) | 38.5 | 2.32 | 37.2 | 39.9 | Aqua Regia Digestion |
Co, Cobalt (ppm) | 2.55 | 0.121 | 2.50 | 2.60 | Aqua Regia Digestion |
Cr, Chromium (ppm) | 24.6 | 2.26 | 23.7 | 25.5 | Aqua Regia Digestion |
Cs, Caesium (ppm) | 1.15 | 0.092 | 1.09 | 1.20 | Aqua Regia Digestion |
Cu, Copper (wt.%) | 0.101 | 0.003 | 0.100 | 0.102 | Aqua Regia Digestion |
Fe, Iron (wt.%) | 1.94 | 0.114 | 1.89 | 1.99 | Aqua Regia Digestion |
Ga, Gallium (ppm) | 3.77 | 0.189 | 3.67 | 3.87 | Aqua Regia Digestion |
Ge, Germanium (ppm) | 0.084 | 0.024 | 0.062 | 0.106 | Aqua Regia Digestion |
Hf, Hafnium (ppm) | 1.11 | 0.107 | 1.04 | 1.17 | Aqua Regia Digestion |
Hg, Mercury (ppm) | 0.20 | 0.02 | 0.18 | 0.21 | Aqua Regia Digestion |
In, Indium (ppm) | 0.42 | 0.016 | 0.42 | 0.43 | Aqua Regia Digestion |
K, Potassium (wt.%) | 0.246 | 0.019 | 0.236 | 0.256 | Aqua Regia Digestion |
La, Lanthanum (ppm) | 19.9 | 1.69 | 19.2 | 20.7 | Aqua Regia Digestion |
Li, Lithium (ppm) | 7.78 | 0.695 | 7.42 | 8.13 | Aqua Regia Digestion |
Mg, Magnesium (ppm) | 411 | 20 | 400 | 423 | Aqua Regia Digestion |
Mn, Manganese (ppm) | 192 | 8 | 188 | 195 | Aqua Regia Digestion |
Mo, Molybdenum (ppm) | 4.83 | 0.281 | 4.73 | 4.94 | Aqua Regia Digestion |
Na, Sodium (wt.%) | 0.067 | 0.008 | 0.063 | 0.070 | Aqua Regia Digestion |
Ni, Nickel (ppm) | 6.39 | 0.419 | 6.21 | 6.58 | Aqua Regia Digestion |
P, Phosphorus (ppm) | 178 | 8 | 174 | 181 | Aqua Regia Digestion |
Pb, Lead (ppm) | 234 | 14 | 227 | 240 | Aqua Regia Digestion |
Rb, Rubidium (ppm) | 11.9 | 0.71 | 11.5 | 12.3 | Aqua Regia Digestion |
S, Sulphur (wt.%) | 0.807 | 0.038 | 0.789 | 0.826 | Aqua Regia Digestion |
Sb, Antimony (ppm) | 18.0 | 2.2 | 17.0 | 19.1 | Aqua Regia Digestion |
Sc, Scandium (ppm) | 1.00 | 0.13 | 0.94 | 1.07 | Aqua Regia Digestion |
Se, Selenium (ppm) | 10.0 | 1.2 | 9.4 | 10.6 | Aqua Regia Digestion |
Sn, Tin (ppm) | 1.19 | 0.112 | 1.13 | 1.26 | Aqua Regia Digestion |
Sr, Strontium (ppm) | 33.2 | 2.95 | 31.8 | 34.7 | Aqua Regia Digestion |
Tb, Terbium (ppm) | 0.28 | 0.06 | 0.21 | 0.35 | Aqua Regia Digestion |
Te, Tellurium (ppm) | 13.0 | 0.83 | 12.6 | 13.4 | Aqua Regia Digestion |
Th, Thorium (ppm) | 6.96 | 0.73 | 6.56 | 7.36 | Aqua Regia Digestion |
Ti, Titanium (ppm) | 220 | 22 | 207 | 233 | Aqua Regia Digestion |
Tl, Thallium (ppm) | 1.08 | 0.084 | 1.03 | 1.12 | Aqua Regia Digestion |
U, Uranium (ppm) | 2.22 | 0.119 | 2.15 | 2.30 | Aqua Regia Digestion |
V, Vanadium (ppm) | 3.83 | 0.51 | 3.59 | 4.06 | Aqua Regia Digestion |
W, Tungsten (ppm) | 1.86 | 0.184 | 1.76 | 1.96 | Aqua Regia Digestion |
Y, Yttrium (ppm) | 5.34 | 0.528 | 5.08 | 5.60 | Aqua Regia Digestion |
Yb, Ytterbium (ppm) | 0.20 | 0.020 | 0.18 | 0.23 | Aqua Regia Digestion |
Zn, Zinc (ppm) | 267 | 7 | 263 | 270 | Aqua Regia Digestion |
Zr, Zirconium (ppm) | 38.3 | 5.5 | 35.6 | 40.9 | Aqua Regia Digestion |
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