OREAS 607c
primary
rhyodacite
high sulphidation epithermal
OREAS 607c
SKU: 607c
OREAS 607c was prepared from a blend of gold-copper-silver ores from
Evolution Mining’s Mount Carlton Operation in Queensland, Australia and barren
argillic rhyodacite sourced from a quarry east of Melbourne, Australia. A minor
quantity of Cu-Au-Ag concentrate was also added to help achieve target 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-eight commercial analytical
laboratories participated in the program to certify the following:
Gold by fire assay using a 25-50 g charge weight with AAS (12
laboratories), ICP-OES (10 laboratories) or ICP-MS (1 laboratory) finish;
Gold by aqua regia digestion using a 10-50 g sample mass with ICP-OES/MS
(15 laboratories) or AAS (5 laboratories) finish;
Full ICP-OES and MS elemental suites by 4-acid digestion (up to 26
laboratories depending on the element);
Full ICP-OES and MS elemental suites by aqua regia digestion (up to 26
laboratories depending on the element).
To evaluate homogeneity, instrumental neutron activation analysis (INAA) of
Au on 20 x 1 g subsamples was undertaken at Actlabs Ancaster in
Canada.
Specifications
- State: primary
- Matrix: rhyodacite
- Mineralisation: high sulphidation epithermal
- CRM Group: Au, Au-Cu ore, Au-Ag ore
Certified Values
| Analyte | Certified Value | 1SD | 95% CL Low | 95% CL High | Method |
|---|---|---|---|---|---|
| Au, Gold (ppm) | 0.755 | 0.013 | 0.749 | 0.761 | Pb Fire Assay |
| Ag, Silver (ppm) | 6.33 | 0.267 | 6.03 | 6.63 | 4-Acid Digestion |
| Cu, Copper (wt.%) | 0.057 | 0.002 | 0.055 | 0.058 | 4-Acid Digestion |
| Au, Gold (ppm) | 0.751 | 0.031 | 0.737 | 0.766 | Aqua Regia Digestion (sample weights 10-50g) |
| S, Sulphur (wt.%) | 0.666 | 0.028 | 0.640 | 0.693 | Infrared Combustion |
| C, Carbon (wt.%) | 0.281 | 0.014 | 0.257 | 0.305 | Infrared Combustion |
| Al, Aluminium (wt.%) | 7.30 | 0.277 | 7.03 | 7.56 | 4-Acid Digestion |
| As, Arsenic (ppm) | 135 | 7 | 130 | 140 | 4-Acid Digestion |
| Ba, Barium (ppm) | 2629 | 179 | 2504 | 2755 | 4-Acid Digestion |
| Be, Beryllium (ppm) | 2.79 | 0.121 | 2.63 | 2.94 | 4-Acid Digestion |
| Bi, Bismuth (ppm) | 7.02 | 0.418 | 6.73 | 7.32 | 4-Acid Digestion |
| Ca, Calcium (wt.%) | 1.13 | 0.050 | 1.08 | 1.18 | 4-Acid Digestion |
| Cd, Cadmium (ppm) | 1.81 | 0.121 | 1.70 | 1.92 | 4-Acid Digestion |
| Ce, Cerium (ppm) | 85 | 4.6 | 80 | 90 | 4-Acid Digestion |
| Co, Cobalt (ppm) | 2.54 | 0.214 | 2.35 | 2.72 | 4-Acid Digestion |
| Cr, Chromium (ppm) | 12.4 | 1.3 | 10.7 | 14.0 | 4-Acid Digestion |
| Cs, Caesium (ppm) | 6.32 | 0.230 | 6.02 | 6.62 | 4-Acid Digestion |
| Dy, Dysprosium (ppm) | 3.20 | 0.155 | 2.98 | 3.43 | 4-Acid Digestion |
| Er, Erbium (ppm) | 0.92 | 0.062 | 0.83 | 1.02 | 4-Acid Digestion |
| Eu, Europium (ppm) | 1.26 | 0.13 | 1.10 | 1.42 | 4-Acid Digestion |
| Fe, Iron (wt.%) | 2.24 | 0.057 | 2.17 | 2.31 | 4-Acid Digestion |
| Ga, Gallium (ppm) | 22.7 | 0.97 | 21.8 | 23.7 | 4-Acid Digestion |
| Gd, Gadolinium (ppm) | 5.45 | 0.430 | 4.98 | 5.92 | 4-Acid Digestion |
| Ge, Germanium (ppm) | 0.16 | 0.04 | 0.12 | 0.20 | 4-Acid Digestion |
| Hf, Hafnium (ppm) | 5.96 | 0.222 | 5.67 | 6.26 | 4-Acid Digestion |
| Ho, Holmium (ppm) | 0.45 | 0.016 | 0.41 | 0.49 | 4-Acid Digestion |
| In, Indium (ppm) | 0.21 | 0.011 | 0.19 | 0.22 | 4-Acid Digestion |
| K, Potassium (wt.%) | 3.00 | 0.090 | 2.91 | 3.10 | 4-Acid Digestion |
| La, Lanthanum (ppm) | 42.5 | 2.77 | 39.9 | 45.0 | 4-Acid Digestion |
| Li, Lithium (ppm) | 27.9 | 1.54 | 26.6 | 29.2 | 4-Acid Digestion |
| Lu, Lutetium (ppm) | 0.074 | 0.005 | 0.063 | 0.084 | 4-Acid Digestion |
| Mg, Magnesium (wt.%) | 0.163 | 0.009 | 0.155 | 0.172 | 4-Acid Digestion |
| Mn, Manganese (wt.%) | 0.027 | 0.001 | 0.026 | 0.027 | 4-Acid Digestion |
| Mo, Molybdenum (ppm) | 3.47 | 0.252 | 3.20 | 3.75 | 4-Acid Digestion |
| Na, Sodium (wt.%) | 2.29 | 0.082 | 2.21 | 2.36 | 4-Acid Digestion |
| Nb, Niobium (ppm) | 16.7 | 1.39 | 15.5 | 17.8 | 4-Acid Digestion |
| Nd, Neodymium (ppm) | 35.4 | 2.61 | 32.2 | 38.6 | 4-Acid Digestion |
| Ni, Nickel (ppm) | 4.24 | 0.307 | 3.94 | 4.54 | 4-Acid Digestion |
| P, Phosphorus (wt.%) | 0.035 | 0.001 | 0.034 | 0.037 | 4-Acid Digestion |
| Pb, Lead (ppm) | 223 | 10 | 215 | 232 | 4-Acid Digestion |
| Pr, Praseodymium (ppm) | 9.60 | 0.760 | 8.71 | 10.49 | 4-Acid Digestion |
| Rb, Rubidium (ppm) | 135 | 9 | 128 | 142 | 4-Acid Digestion |
| Re, Rhenium (ppm) | < 0.002 | IND | IND | IND | 4-Acid Digestion |
| S, Sulphur (wt.%) | 0.684 | 0.030 | 0.663 | 0.705 | 4-Acid Digestion |
| Sb, Antimony (ppm) | 21.8 | 0.93 | 20.7 | 22.9 | 4-Acid Digestion |
| Sc, Scandium (ppm) | 4.17 | 0.48 | 3.81 | 4.53 | 4-Acid Digestion |
| Sm, Samarium (ppm) | 6.69 | 0.504 | 6.12 | 7.27 | 4-Acid Digestion |
| Sn, Tin (ppm) | 3.83 | 0.212 | 3.61 | 4.06 | 4-Acid Digestion |
| Sr, Strontium (ppm) | 198 | 11 | 189 | 207 | 4-Acid Digestion |
| Ta, Tantalum (ppm) | 1.25 | 0.067 | 1.18 | 1.32 | 4-Acid Digestion |
| Tb, Terbium (ppm) | 0.70 | 0.020 | 0.66 | 0.75 | 4-Acid Digestion |
| Te, Tellurium (ppm) | 1.18 | 0.116 | 1.07 | 1.29 | 4-Acid Digestion |
| Th, Thorium (ppm) | 14.1 | 0.89 | 13.3 | 14.9 | 4-Acid Digestion |
| Ti, Titanium (wt.%) | 0.120 | 0.005 | 0.116 | 0.124 | 4-Acid Digestion |
| Tl, Thallium (ppm) | 0.94 | 0.033 | 0.90 | 0.98 | 4-Acid Digestion |
| Tm, Thulium (ppm) | 0.10 | 0.005 | 0.09 | 0.11 | 4-Acid Digestion |
| U, Uranium (ppm) | 4.90 | 0.342 | 4.64 | 5.16 | 4-Acid Digestion |
| V, Vanadium (ppm) | 9.19 | 0.842 | 8.40 | 9.98 | 4-Acid Digestion |
| W, Tungsten (ppm) | 2.32 | 0.158 | 2.14 | 2.49 | 4-Acid Digestion |
| Y, Yttrium (ppm) | 13.6 | 0.80 | 12.9 | 14.2 | 4-Acid Digestion |
| Yb, Ytterbium (ppm) | 0.54 | 0.046 | 0.47 | 0.61 | 4-Acid Digestion |
| Zn, Zinc (ppm) | 428 | 20 | 412 | 445 | 4-Acid Digestion |
| Zr, Zirconium (ppm) | 216 | 9 | 209 | 223 | 4-Acid Digestion |
| Ag, Silver (ppm) | 6.31 | 0.336 | 6.07 | 6.55 | Aqua Regia Digestion |
| Al, Aluminium (wt.%) | 0.626 | 0.059 | 0.588 | 0.663 | Aqua Regia Digestion |
| As, Arsenic (ppm) | 129 | 7 | 123 | 134 | Aqua Regia Digestion |
| B, Boron (ppm) | < 10.0 | IND | IND | IND | Aqua Regia Digestion |
| Ba, Barium (ppm) | 274 | 19 | 260 | 288 | Aqua Regia Digestion |
| Be, Beryllium (ppm) | 0.68 | 0.07 | 0.62 | 0.74 | Aqua Regia Digestion |
| Bi, Bismuth (ppm) | 7.33 | 0.365 | 7.01 | 7.65 | Aqua Regia Digestion |
| Ca, Calcium (wt.%) | 0.936 | 0.040 | 0.910 | 0.962 | Aqua Regia Digestion |
| Cd, Cadmium (ppm) | 1.80 | 0.084 | 1.70 | 1.90 | Aqua Regia Digestion |
| Ce, Cerium (ppm) | 44.3 | 3.18 | 41.6 | 46.9 | Aqua Regia Digestion |
| Co, Cobalt (ppm) | 1.81 | 0.159 | 1.67 | 1.94 | Aqua Regia Digestion |
| Cr, Chromium (ppm) | 12.9 | 0.83 | 12.0 | 13.8 | Aqua Regia Digestion |
| Cs, Caesium (ppm) | 1.35 | 0.14 | 1.24 | 1.46 | Aqua Regia Digestion |
| Cu, Copper (wt.%) | 0.056 | 0.003 | 0.055 | 0.058 | Aqua Regia Digestion |
| Fe, Iron (wt.%) | 1.59 | 0.091 | 1.54 | 1.64 | Aqua Regia Digestion |
| Ga, Gallium (ppm) | 3.21 | 0.41 | 2.95 | 3.47 | Aqua Regia Digestion |
| Hf, Hafnium (ppm) | 1.08 | 0.093 | 1.00 | 1.16 | Aqua Regia Digestion |
| Hg, Mercury (ppm) | 0.082 | 0.010 | 0.063 | 0.100 | Aqua Regia Digestion |
| In, Indium (ppm) | 0.15 | 0.008 | 0.14 | 0.16 | Aqua Regia Digestion |
| K, Potassium (wt.%) | 0.270 | 0.020 | 0.255 | 0.284 | Aqua Regia Digestion |
| La, Lanthanum (ppm) | 21.9 | 1.55 | 20.7 | 23.2 | Aqua Regia Digestion |
| Li, Lithium (ppm) | 7.29 | 0.622 | 6.79 | 7.79 | Aqua Regia Digestion |
| Mg, Magnesium (wt.%) | 0.071 | 0.006 | 0.068 | 0.074 | Aqua Regia Digestion |
| Mn, Manganese (wt.%) | 0.024 | 0.001 | 0.024 | 0.025 | Aqua Regia Digestion |
| Mo, Molybdenum (ppm) | 3.15 | 0.201 | 2.90 | 3.39 | Aqua Regia Digestion |
| Na, Sodium (wt.%) | 0.064 | 0.008 | 0.057 | 0.071 | Aqua Regia Digestion |
| Nb, Niobium (ppm) | 0.34 | 0.08 | 0.27 | 0.41 | Aqua Regia Digestion |
| Ni, Nickel (ppm) | 3.90 | 0.265 | 3.64 | 4.16 | Aqua Regia Digestion |
| P, Phosphorus (wt.%) | 0.025 | 0.002 | 0.024 | 0.026 | Aqua Regia Digestion |
| Pb, Lead (ppm) | 187 | 7 | 181 | 192 | Aqua Regia Digestion |
| Rb, Rubidium (ppm) | 14.1 | 1.5 | 13.0 | 15.2 | Aqua Regia Digestion |
| Re, Rhenium (ppm) | < 0.001 | IND | IND | IND | Aqua Regia Digestion |
| S, Sulphur (wt.%) | 0.369 | 0.025 | 0.353 | 0.384 | Aqua Regia Digestion |
| Sb, Antimony (ppm) | 16.8 | 1.7 | 15.8 | 17.8 | Aqua Regia Digestion |
| Sc, Scandium (ppm) | 1.09 | 0.15 | 0.97 | 1.20 | Aqua Regia Digestion |
| Se, Selenium (ppm) | 1.76 | 0.20 | 1.50 | 2.01 | Aqua Regia Digestion |
| Sn, Tin (ppm) | 0.95 | 0.18 | 0.83 | 1.08 | Aqua Regia Digestion |
| Sr, Strontium (ppm) | 31.6 | 1.32 | 30.1 | 33.1 | Aqua Regia Digestion |
| Ta, Tantalum (ppm) | < 0.010 | IND | IND | IND | Aqua Regia Digestion |
| Tb, Terbium (ppm) | 0.37 | 0.026 | 0.33 | 0.40 | Aqua Regia Digestion |
| Te, Tellurium (ppm) | 1.12 | 0.092 | 1.02 | 1.22 | Aqua Regia Digestion |
| Th, Thorium (ppm) | 7.08 | 0.645 | 6.65 | 7.50 | Aqua Regia Digestion |
| Ti, Titanium (wt.%) | 0.015 | 0.003 | 0.013 | 0.016 | Aqua Regia Digestion |
| Tl, Thallium (ppm) | 0.29 | 0.015 | 0.27 | 0.31 | Aqua Regia Digestion |
| U, Uranium (ppm) | 2.32 | 0.25 | 2.17 | 2.48 | Aqua Regia Digestion |
| V, Vanadium (ppm) | 3.00 | 0.143 | 2.86 | 3.14 | Aqua Regia Digestion |
| W, Tungsten (ppm) | 0.53 | 0.043 | 0.48 | 0.58 | Aqua Regia Digestion |
| Y, Yttrium (ppm) | 6.06 | 0.484 | 5.72 | 6.40 | Aqua Regia Digestion |
| Yb, Ytterbium (ppm) | 0.20 | 0.005 | 0.19 | 0.21 | Aqua Regia Digestion |
| Zn, Zinc (ppm) | 366 | 17 | 353 | 379 | Aqua Regia Digestion |
| Zr, Zirconium (ppm) | 41.9 | 5.7 | 38.5 | 45.2 | Aqua Regia Digestion |
Product Specifications
State
primary
Matrix
rhyodacite
Mineralisation
high sulphidation epithermal
Availability
available
Certified Reference Values
| Analyte | Certified Value | Uncertainty (1SD) | 95% Confidence Low | 95% Confidence High | Method |
|---|---|---|---|---|---|
| Ce - Cerium (ppm) | 85 | - | - | - | 4-Acid Digestion |
| Dy - Dysprosium (ppm) | 3.20 | - | - | - | 4-Acid Digestion |
| Er - Erbium (ppm) | 0.92 | - | - | - | 4-Acid Digestion |
| Eu - Europium (ppm) | 1.26 | - | - | - | 4-Acid Digestion |
| Gd - Gadolinium (ppm) | 5.45 | - | - | - | 4-Acid Digestion |
| Ho - Holmium (ppm) | 0.45 | - | - | - | 4-Acid Digestion |
| La - Lanthanum (ppm) | 42.5 | - | - | - | 4-Acid Digestion |
| Lu - Lutetium (ppm) | 0.074 | - | - | - | 4-Acid Digestion |
| Nd - Neodymium (ppm) | 35.4 | - | - | - | 4-Acid Digestion |
| Pr - Praseodymium (ppm) | 9.60 | - | - | - | 4-Acid Digestion |
| Sm - Samarium (ppm) | 6.69 | - | - | - | 4-Acid Digestion |
| Tb - Terbium (ppm) | 0.70 | - | - | - | 4-Acid Digestion |
| Tm - Thulium (ppm) | 0.10 | - | - | - | 4-Acid Digestion |
| Y - Yttrium (ppm) | 13.6 | - | - | - | 4-Acid Digestion |
| Yb - Ytterbium (ppm) | 0.54 | - | - | - | 4-Acid Digestion |
| Ag - Silver (ppm) | 6.31 | - | - | - | Aqua Regia |
| As - Arsenic (ppm) | 129 | - | - | - | Aqua Regia |
| Bi - Bismuth (ppm) | 7.33 | - | - | - | Aqua Regia |
| Cd - Cadmium (ppm) | 1.80 | - | - | - | Aqua Regia |
| Co - Cobalt (ppm) | 1.81 | - | - | - | Aqua Regia |
| Hg - Mercury (ppm) | 0.082 | - | - | - | Aqua Regia |
| Mo - Molybdenum (ppm) | 3.15 | - | - | - | Aqua Regia |
| Sb - Antimony (ppm) | 16.8 | - | - | - | Aqua Regia |
| Se - Selenium (ppm) | 1.76 | - | - | - | Aqua Regia |
| Te - Tellurium (ppm) | 1.12 | - | - | - | Aqua Regia |
| Tl - Thallium (ppm) | 0.29 | - | - | - | Aqua Regia |
| Zn - Zinc (ppm) | 366 | - | - | - | Aqua Regia |
SD = Standard Deviation | CL = 95% Confidence Limits
Methods: AR = Aqua Regia, 4-Acid = 4-Acid Digestion, LBF = Lithium Borate Fusion, FA/AAS = Fire Assay with Atomic Absorption, LECO = LECO Combustion Analysis
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