Specifications
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CRM State:
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Matrix:
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Mineralisation:
OREAS 600b 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) | 25.1 | 1.00 | 24.7 | 25.6 | 4-Acid Digestion |
Cu, Copper (ppm) | 499 | 13 | 493 | 505 | 4-Acid Digestion |
Au, Gold (ppm) | 0.204 | 0.007 | 0.201 | 0.207 | Pb Fire Assay |
Au, Gold (ppm) | 0.200 | 0.008 | 0.195 | 0.205 | Aqua Regia Digestion (sample weights 10-50g) |
S, Sulphur (wt.%) | 0.299 | 0.022 | 0.288 | 0.310 | Infrared Combustion |
Al, Aluminium (wt.%) | 7.58 | 0.296 | 7.45 | 7.71 | 4-Acid Digestion |
As, Arsenic (ppm) | 99 | 6.8 | 96 | 102 | 4-Acid Digestion |
Ba, Barium (ppm) | 3397 | 189 | 3304 | 3489 | 4-Acid Digestion |
Be, Beryllium (ppm) | 3.14 | 0.47 | 2.91 | 3.38 | 4-Acid Digestion |
Bi, Bismuth (ppm) | 5.42 | 0.378 | 5.22 | 5.62 | 4-Acid Digestion |
Ca, Calcium (wt.%) | 1.26 | 0.066 | 1.23 | 1.29 | 4-Acid Digestion |
Cd, Cadmium (ppm) | 2.08 | 0.098 | 2.04 | 2.13 | 4-Acid Digestion |
Ce, Cerium (ppm) | 93 | 8.0 | 88 | 98 | 4-Acid Digestion |
Co, Cobalt (ppm) | 2.77 | 0.236 | 2.66 | 2.89 | 4-Acid Digestion |
Cr, Chromium (ppm) | 22.3 | 3.0 | 21.0 | 23.5 | 4-Acid Digestion |
Cs, Caesium (ppm) | 6.91 | 0.317 | 6.75 | 7.07 | 4-Acid Digestion |
Dy, Dysprosium (ppm) | 3.50 | 0.192 | 3.32 | 3.68 | 4-Acid Digestion |
Er, Erbium (ppm) | 1.01 | 0.086 | 0.93 | 1.09 | 4-Acid Digestion |
Eu, Europium (ppm) | 1.35 | 0.14 | 1.19 | 1.51 | 4-Acid Digestion |
Fe, Iron (wt.%) | 2.54 | 0.092 | 2.50 | 2.58 | 4-Acid Digestion |
Ga, Gallium (ppm) | 23.2 | 1.69 | 22.4 | 24.0 | 4-Acid Digestion |
Gd, Gadolinium (ppm) | 5.74 | 0.353 | 5.41 | 6.07 | 4-Acid Digestion |
Ge, Germanium (ppm) | 0.18 | 0.02 | 0.16 | 0.20 | 4-Acid Digestion |
Hf, Hafnium (ppm) | 6.89 | 0.443 | 6.66 | 7.12 | 4-Acid Digestion |
Ho, Holmium (ppm) | 0.49 | 0.047 | 0.44 | 0.54 | 4-Acid Digestion |
In, Indium (ppm) | 0.44 | 0.028 | 0.43 | 0.46 | 4-Acid Digestion |
K, Potassium (wt.%) | 3.03 | 0.075 | 3.00 | 3.06 | 4-Acid Digestion |
La, Lanthanum (ppm) | 44.1 | 5.1 | 41.6 | 46.7 | 4-Acid Digestion |
Li, Lithium (ppm) | 28.9 | 2.33 | 27.9 | 29.9 | 4-Acid Digestion |
Lu, Lutetium (ppb) | 67.4 | 10.2 | 54.5 | 80.3 | 4-Acid Digestion |
Mg, Magnesium (ppm) | 1229 | 69 | 1199 | 1259 | 4-Acid Digestion |
Mn, Manganese (ppm) | 293 | 12 | 288 | 299 | 4-Acid Digestion |
Mo, Molybdenum (ppm) | 5.43 | 0.396 | 5.28 | 5.59 | 4-Acid Digestion |
Na, Sodium (wt.%) | 2.76 | 0.095 | 2.72 | 2.80 | 4-Acid Digestion |
Nb, Niobium (ppm) | 18.6 | 1.37 | 18.0 | 19.3 | 4-Acid Digestion |
Nd, Neodymium (ppm) | 39.6 | 4.1 | 35.1 | 44.1 | 4-Acid Digestion |
Ni, Nickel (ppm) | 4.86 | 0.92 | 4.40 | 5.33 | 4-Acid Digestion |
P, Phosphorus (ppm) | 303 | 14 | 297 | 309 | 4-Acid Digestion |
Pb, Lead (ppm) | 119 | 4 | 118 | 121 | 4-Acid Digestion |
Pr, Praseodymium (ppm) | 10.7 | 0.89 | 9.6 | 11.7 | 4-Acid Digestion |
Rb, Rubidium (ppm) | 143 | 4 | 141 | 145 | 4-Acid Digestion |
S, Sulphur (wt.%) | 0.308 | 0.016 | 0.300 | 0.315 | 4-Acid Digestion |
Sb, Antimony (ppm) | 13.5 | 0.81 | 13.1 | 14.0 | 4-Acid Digestion |
Sc, Scandium (ppm) | 4.34 | 0.275 | 4.18 | 4.50 | 4-Acid Digestion |
Se, Selenium (ppm) | 3.33 | 0.36 | 3.00 | 3.66 | 4-Acid Digestion |
Sm, Samarium (ppm) | 7.92 | 0.547 | 7.30 | 8.54 | 4-Acid Digestion |
Sn, Tin (ppm) | 4.27 | 0.230 | 4.14 | 4.39 | 4-Acid Digestion |
Sr, Strontium (ppm) | 212 | 8 | 208 | 216 | 4-Acid Digestion |
Ta, Tantalum (ppm) | 1.48 | 0.097 | 1.43 | 1.53 | 4-Acid Digestion |
Tb, Terbium (ppm) | 0.77 | 0.10 | 0.67 | 0.86 | 4-Acid Digestion |
Te, Tellurium (ppm) | 2.05 | 0.179 | 1.97 | 2.14 | 4-Acid Digestion |
Th, Thorium (ppm) | 15.1 | 0.67 | 14.7 | 15.4 | 4-Acid Digestion |
Ti, Titanium (wt.%) | 0.120 | 0.005 | 0.117 | 0.122 | 4-Acid Digestion |
Tl, Thallium (ppm) | 1.02 | 0.065 | 0.99 | 1.06 | 4-Acid Digestion |
U, Uranium (ppm) | 5.97 | 0.361 | 5.77 | 6.17 | 4-Acid Digestion |
V, Vanadium (ppm) | 5.61 | 0.58 | 4.98 | 6.24 | 4-Acid Digestion |
W, Tungsten (ppm) | 4.63 | 0.49 | 4.43 | 4.82 | 4-Acid Digestion |
Y, Yttrium (ppm) | 15.0 | 0.78 | 14.6 | 15.3 | 4-Acid Digestion |
Yb, Ytterbium (ppm) | 0.56 | 0.06 | 0.49 | 0.64 | 4-Acid Digestion |
Zn, Zinc (ppm) | 404 | 14 | 399 | 410 | 4-Acid Digestion |
Zr, Zirconium (ppm) | 254 | 10 | 250 | 258 | 4-Acid Digestion |
Ag, Silver (ppm) | 25.1 | 1.67 | 24.4 | 25.8 | Aqua Regia Digestion |
Al, Aluminium (wt.%) | 0.590 | 0.043 | 0.569 | 0.612 | Aqua Regia Digestion |
As, Arsenic (ppm) | 96 | 7.5 | 93 | 100 | Aqua Regia Digestion |
Ba, Barium (ppm) | 668 | 34 | 650 | 687 | Aqua Regia Digestion |
Be, Beryllium (ppm) | 0.64 | 0.052 | 0.61 | 0.67 | Aqua Regia Digestion |
Bi, Bismuth (ppm) | 5.57 | 0.197 | 5.47 | 5.66 | Aqua Regia Digestion |
Ca, Calcium (wt.%) | 0.817 | 0.029 | 0.804 | 0.830 | Aqua Regia Digestion |
Cd, Cadmium (ppm) | 2.08 | 0.131 | 2.01 | 2.16 | Aqua Regia Digestion |
Ce, Cerium (ppm) | 57 | 4.0 | 55 | 59 | Aqua Regia Digestion |
Co, Cobalt (ppm) | 2.16 | 0.084 | 2.15 | 2.18 | Aqua Regia Digestion |
Cr, Chromium (ppm) | 26.6 | 2.13 | 25.7 | 27.5 | Aqua Regia Digestion |
Cs, Caesium (ppm) | 1.48 | 0.143 | 1.39 | 1.57 | Aqua Regia Digestion |
Cu, Copper (ppm) | 502 | 18 | 494 | 510 | Aqua Regia Digestion |
Fe, Iron (wt.%) | 2.05 | 0.109 | 2.00 | 2.10 | Aqua Regia Digestion |
Ga, Gallium (ppm) | 3.39 | 0.190 | 3.27 | 3.50 | Aqua Regia Digestion |
Ge, Germanium (ppm) | 0.081 | 0.016 | 0.062 | 0.100 | Aqua Regia Digestion |
Hf, Hafnium (ppm) | 1.40 | 0.25 | 1.25 | 1.55 | Aqua Regia Digestion |
Hg, Mercury (ppm) | 0.088 | 0.012 | 0.082 | 0.095 | Aqua Regia Digestion |
In, Indium (ppm) | 0.40 | 0.014 | 0.40 | 0.40 | Aqua Regia Digestion |
K, Potassium (wt.%) | 0.273 | 0.018 | 0.263 | 0.282 | Aqua Regia Digestion |
La, Lanthanum (ppm) | 29.1 | 1.59 | 28.3 | 29.8 | Aqua Regia Digestion |
Li, Lithium (ppm) | 9.92 | 0.927 | 9.44 | 10.40 | Aqua Regia Digestion |
Mg, Magnesium (ppm) | 481 | 74 | 450 | 513 | Aqua Regia Digestion |
Mn, Manganese (ppm) | 252 | 10 | 248 | 256 | Aqua Regia Digestion |
Mo, Molybdenum (ppm) | 5.01 | 0.183 | 4.94 | 5.09 | Aqua Regia Digestion |
Na, Sodium (wt.%) | 0.085 | 0.010 | 0.080 | 0.090 | Aqua Regia Digestion |
Ni, Nickel (ppm) | 4.41 | 0.276 | 4.29 | 4.53 | Aqua Regia Digestion |
P, Phosphorus (ppm) | 234 | 10 | 229 | 239 | Aqua Regia Digestion |
Pb, Lead (ppm) | 83 | 4.2 | 81 | 85 | Aqua Regia Digestion |
Rb, Rubidium (ppm) | 15.7 | 0.91 | 15.1 | 16.3 | Aqua Regia Digestion |
S, Sulphur (wt.%) | 0.251 | 0.018 | 0.243 | 0.259 | Aqua Regia Digestion |
Sb, Antimony (ppm) | 10.2 | 0.97 | 9.7 | 10.8 | Aqua Regia Digestion |
Sc, Scandium (ppm) | 1.17 | 0.15 | 1.09 | 1.25 | Aqua Regia Digestion |
Se, Selenium (ppm) | 3.05 | 0.36 | 2.85 | 3.26 | Aqua Regia Digestion |
Sn, Tin (ppm) | 1.42 | 0.116 | 1.36 | 1.48 | Aqua Regia Digestion |
Sr, Strontium (ppm) | 26.7 | 1.70 | 25.9 | 27.5 | Aqua Regia Digestion |
Tb, Terbium (ppm) | 0.40 | 0.10 | 0.28 | 0.52 | Aqua Regia Digestion |
Te, Tellurium (ppm) | 1.99 | 0.186 | 1.90 | 2.09 | Aqua Regia Digestion |
Th, Thorium (ppm) | 9.41 | 0.820 | 8.95 | 9.87 | Aqua Regia Digestion |
Ti, Titanium (ppm) | 299 | 35 | 278 | 319 | Aqua Regia Digestion |
Tl, Thallium (ppm) | 0.47 | 0.038 | 0.45 | 0.49 | Aqua Regia Digestion |
U, Uranium (ppm) | 3.08 | 0.200 | 2.97 | 3.19 | Aqua Regia Digestion |
V, Vanadium (ppm) | 2.54 | 0.35 | 2.08 | 3.00 | Aqua Regia Digestion |
W, Tungsten (ppm) | 2.44 | 0.30 | 2.32 | 2.56 | Aqua Regia Digestion |
Y, Yttrium (ppm) | 7.51 | 0.591 | 7.21 | 7.81 | Aqua Regia Digestion |
Yb, Ytterbium (ppm) | 0.23 | 0.03 | 0.19 | 0.27 | Aqua Regia Digestion |
Zn, Zinc (ppm) | 329 | 9 | 325 | 332 | Aqua Regia Digestion |
Zr, Zirconium (ppm) | 50 | 10 | 46 | 55 | Aqua Regia Digestion |
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