primary
greenstone
orogenic lode gold
OREAS 236b
Артикул: 236b
OREAS 236b was prepared from a blend of gold ore and barren greenstone. The
ore was sourced from the Frogs Leg Gold Mine located 19km west of Kalgoorlie in
Western Australia. The Cambrian greenstone was sourced from a quarry 145km north
of Melbourne, Australia.Thirty-one commercial analytical laboratories
participated in the program to certify the elements reported below.
Gold by fire assay (25-50g charge weight) with AAS and ICP-OES finish;
Gold by aqua regia digestion (15-50g sample weight) with ICP-OES and/or
ICP-MS finish;
Gold by cyanide leach (20-200g) with AAS or ICP-MS finish;
Gold by x-ray PhotonAssay with recommended gross mass 555-585g (12 Chrysos
PhotonAssay units at 7 laboratories with two rounds of data reported from each
unit);
Full ICP-OES and ICP-MS elemental suites by 4-acid digestion;
Full ICP-OES and ICP-MS elemental suites by aqua regia digestion.
To confirm homogeneity, gold by instrumental neutron activation analysis
(INAA) was undertaken on 20 x 85mg subsamples (see Table 6 in the
‘Homogeneity Evaluation’ section of the Certificate).
Specifications
- State: primary
- Matrix: greenstone
- Mineralisation: orogenic lode gold
- CRM Group: Au >1 ppm, Au only
Certified Values
| Analyte | Certified Value | 1SD | 95% CL Low | 95% CL High | Method |
|---|---|---|---|---|---|
| Au, Gold (ppm) | 1.92 | 0.042 | 1.90 | 1.94 | Pb Fire Assay |
| Au, Gold (ppm) | 1.91 | 0.052 | 1.90 | 1.93 | PhotonAssay |
| Au, Gold (ppm) | 1.83 | 0.067 | 1.80 | 1.85 | Aqua Regia Digestion (sample weights 10-50g) |
| Au, Gold (ppm) | 1.84 | 0.073 | 1.81 | 1.87 | Cyanide Leach |
| Ag, Silver (ppm) | 0.917 | 0.047 | 0.865 | 0.970 | 4-Acid Digestion |
| Al, Aluminium (wt.%) | 6.94 | 0.235 | 6.79 | 7.09 | 4-Acid Digestion |
| As, Arsenic (ppm) | 47.8 | 2.25 | 45.8 | 49.7 | 4-Acid Digestion |
| Ba, Barium (ppm) | 156 | 7 | 150 | 162 | 4-Acid Digestion |
| Be, Beryllium (ppm) | 0.38 | 0.05 | 0.34 | 0.41 | 4-Acid Digestion |
| Bi, Bismuth (ppm) | 0.25 | 0.019 | 0.24 | 0.27 | 4-Acid Digestion |
| Ca, Calcium (wt.%) | 6.87 | 0.255 | 6.68 | 7.06 | 4-Acid Digestion |
| Cd, Cadmium (ppm) | 0.49 | 0.06 | 0.44 | 0.54 | 4-Acid Digestion |
| Ce, Cerium (ppm) | 12.3 | 0.56 | 11.8 | 12.8 | 4-Acid Digestion |
| Co, Cobalt (ppm) | 43.1 | 1.66 | 41.7 | 44.4 | 4-Acid Digestion |
| Cr, Chromium (ppm) | 124 | 12 | 116 | 131 | 4-Acid Digestion |
| Cs, Caesium (ppm) | 0.80 | 0.031 | 0.76 | 0.85 | 4-Acid Digestion |
| Cu, Copper (ppm) | 185 | 5 | 180 | 190 | 4-Acid Digestion |
| Dy, Dysprosium (ppm) | 3.90 | 0.255 | 3.68 | 4.12 | 4-Acid Digestion |
| Er, Erbium (ppm) | 2.29 | 0.098 | 2.12 | 2.46 | 4-Acid Digestion |
| Eu, Europium (ppm) | 0.97 | 0.11 | 0.85 | 1.09 | 4-Acid Digestion |
| Fe, Iron (wt.%) | 7.88 | 0.250 | 7.70 | 8.07 | 4-Acid Digestion |
| Ga, Gallium (ppm) | 15.8 | 0.61 | 15.3 | 16.4 | 4-Acid Digestion |
| Gd, Gadolinium (ppm) | 3.28 | 0.081 | 3.09 | 3.47 | 4-Acid Digestion |
| Hf, Hafnium (ppm) | 1.55 | 0.061 | 1.43 | 1.66 | 4-Acid Digestion |
| Ho, Holmium (ppm) | 0.79 | 0.034 | 0.73 | 0.85 | 4-Acid Digestion |
| In, Indium (ppm) | 0.076 | 0.006 | 0.068 | 0.084 | 4-Acid Digestion |
| K, Potassium (wt.%) | 0.391 | 0.015 | 0.379 | 0.404 | 4-Acid Digestion |
| La, Lanthanum (ppm) | 5.15 | 0.245 | 4.86 | 5.45 | 4-Acid Digestion |
| Li, Lithium (ppm) | 12.8 | 1.01 | 12.2 | 13.5 | 4-Acid Digestion |
| Lu, Lutetium (ppm) | 0.34 | 0.026 | 0.30 | 0.38 | 4-Acid Digestion |
| Mg, Magnesium (wt.%) | 3.79 | 0.110 | 3.72 | 3.86 | 4-Acid Digestion |
| Mn, Manganese (wt.%) | 0.135 | 0.005 | 0.131 | 0.139 | 4-Acid Digestion |
| Mo, Molybdenum (ppm) | 2.27 | 0.154 | 2.13 | 2.41 | 4-Acid Digestion |
| Na, Sodium (wt.%) | 1.87 | 0.051 | 1.83 | 1.91 | 4-Acid Digestion |
| Nb, Niobium (ppm) | 3.40 | 0.139 | 3.26 | 3.55 | 4-Acid Digestion |
| Nd, Neodymium (ppm) | 8.44 | 0.140 | 8.09 | 8.78 | 4-Acid Digestion |
| Ni, Nickel (ppm) | 90 | 3.6 | 87 | 93 | 4-Acid Digestion |
| P, Phosphorus (wt.%) | 0.041 | 0.001 | 0.040 | 0.042 | 4-Acid Digestion |
| Pb, Lead (ppm) | 18.5 | 1.10 | 17.4 | 19.6 | 4-Acid Digestion |
| Pr, Praseodymium (ppm) | 1.74 | 0.059 | 1.65 | 1.82 | 4-Acid Digestion |
| Rb, Rubidium (ppm) | 11.6 | 0.59 | 11.0 | 12.1 | 4-Acid Digestion |
| Re, Rhenium (ppm) | 0.002 | 0.001 | 0.001 | 0.003 | 4-Acid Digestion |
| S, Sulphur (wt.%) | 0.294 | 0.015 | 0.281 | 0.308 | 4-Acid Digestion |
| Sb, Antimony (ppm) | 1.83 | 0.21 | 1.72 | 1.94 | 4-Acid Digestion |
| Sc, Scandium (ppm) | 39.7 | 1.61 | 38.4 | 41.0 | 4-Acid Digestion |
| Sm, Samarium (ppm) | 2.58 | 0.101 | 2.40 | 2.77 | 4-Acid Digestion |
| Sn, Tin (ppm) | 0.95 | 0.10 | 0.85 | 1.06 | 4-Acid Digestion |
| Sr, Strontium (ppm) | 212 | 9 | 205 | 218 | 4-Acid Digestion |
| Ta, Tantalum (ppm) | 0.23 | 0.011 | 0.21 | 0.24 | 4-Acid Digestion |
| Tb, Terbium (ppm) | 0.58 | 0.056 | 0.51 | 0.65 | 4-Acid Digestion |
| Te, Tellurium (ppm) | 0.12 | 0.03 | 0.07 | 0.17 | 4-Acid Digestion |
| Th, Thorium (ppm) | 0.90 | 0.055 | 0.84 | 0.95 | 4-Acid Digestion |
| Ti, Titanium (wt.%) | 0.617 | 0.031 | 0.599 | 0.636 | 4-Acid Digestion |
| Tl, Thallium (ppm) | 0.18 | 0.012 | 0.16 | 0.19 | 4-Acid Digestion |
| Tm, Thulium (ppm) | 0.32 | 0.020 | 0.29 | 0.34 | 4-Acid Digestion |
| U, Uranium (ppm) | 0.26 | 0.04 | 0.22 | 0.30 | 4-Acid Digestion |
| V, Vanadium (ppm) | 275 | 8 | 267 | 282 | 4-Acid Digestion |
| W, Tungsten (ppm) | 19.9 | 0.87 | 19.2 | 20.6 | 4-Acid Digestion |
| Y, Yttrium (ppm) | 19.9 | 0.73 | 19.0 | 20.8 | 4-Acid Digestion |
| Yb, Ytterbium (ppm) | 2.20 | 0.087 | 2.09 | 2.31 | 4-Acid Digestion |
| Zn, Zinc (ppm) | 129 | 6 | 125 | 134 | 4-Acid Digestion |
| Zr, Zirconium (ppm) | 49.0 | 3.98 | 45.6 | 52.4 | 4-Acid Digestion |
| Ag, Silver (ppm) | 0.898 | 0.043 | 0.857 | 0.940 | Aqua Regia Digestion |
| Al, Aluminium (wt.%) | 3.19 | 0.160 | 3.05 | 3.34 | Aqua Regia Digestion |
| As, Arsenic (ppm) | 46.5 | 2.19 | 44.4 | 48.7 | Aqua Regia Digestion |
| B, Boron (ppm) | 18.9 | 2.1 | 17.0 | 20.7 | Aqua Regia Digestion |
| Ba, Barium (ppm) | 29.6 | 2.32 | 27.7 | 31.5 | Aqua Regia Digestion |
| Be, Beryllium (ppm) | 0.19 | 0.03 | 0.17 | 0.22 | Aqua Regia Digestion |
| Bi, Bismuth (ppm) | 0.25 | 0.012 | 0.24 | 0.27 | Aqua Regia Digestion |
| Ca, Calcium (wt.%) | 2.18 | 0.29 | 2.00 | 2.35 | Aqua Regia Digestion |
| Cd, Cadmium (ppm) | 0.48 | 0.040 | 0.43 | 0.52 | Aqua Regia Digestion |
| Ce, Cerium (ppm) | 8.94 | 0.558 | 8.45 | 9.44 | Aqua Regia Digestion |
| Co, Cobalt (ppm) | 29.7 | 1.44 | 28.3 | 31.1 | Aqua Regia Digestion |
| Cr, Chromium (ppm) | 19.9 | 1.51 | 18.7 | 21.0 | Aqua Regia Digestion |
| Cs, Caesium (ppm) | 0.56 | 0.032 | 0.53 | 0.59 | Aqua Regia Digestion |
| Cu, Copper (ppm) | 181 | 7 | 175 | 187 | Aqua Regia Digestion |
| Eu, Europium (ppm) | 0.48 | 0.13 | 0.34 | 0.63 | Aqua Regia Digestion |
| Fe, Iron (wt.%) | 5.53 | 0.200 | 5.38 | 5.67 | Aqua Regia Digestion |
| Ga, Gallium (ppm) | 9.53 | 0.615 | 9.02 | 10.04 | Aqua Regia Digestion |
| Ge, Germanium (ppm) | 0.13 | 0.03 | 0.09 | 0.16 | Aqua Regia Digestion |
| Hf, Hafnium (ppm) | 0.43 | 0.033 | 0.39 | 0.47 | Aqua Regia Digestion |
| Hg, Mercury (ppm) | 0.054 | 0.019 | 0.030 | 0.077 | Aqua Regia Digestion |
| Ho, Holmium (ppm) | 0.46 | 0.08 | 0.34 | 0.59 | Aqua Regia Digestion |
| K, Potassium (wt.%) | 0.115 | 0.007 | 0.107 | 0.122 | Aqua Regia Digestion |
| La, Lanthanum (ppm) | 3.72 | 0.309 | 3.45 | 3.99 | Aqua Regia Digestion |
| Li, Lithium (ppm) | 9.85 | 0.800 | 9.25 | 10.44 | Aqua Regia Digestion |
| Mg, Magnesium (wt.%) | 1.66 | 0.059 | 1.61 | 1.71 | Aqua Regia Digestion |
| Mn, Manganese (wt.%) | 0.071 | 0.003 | 0.069 | 0.074 | Aqua Regia Digestion |
| Mo, Molybdenum (ppm) | 2.21 | 0.143 | 2.09 | 2.33 | Aqua Regia Digestion |
| Na, Sodium (wt.%) | 0.150 | 0.010 | 0.141 | 0.159 | Aqua Regia Digestion |
| Nb, Niobium (ppm) | 0.12 | 0.04 | 0.08 | 0.17 | Aqua Regia Digestion |
| Ni, Nickel (ppm) | 60 | 2.7 | 57 | 62 | Aqua Regia Digestion |
| P, Phosphorus (wt.%) | 0.040 | 0.002 | 0.038 | 0.041 | Aqua Regia Digestion |
| Pb, Lead (ppm) | 17.9 | 0.90 | 17.0 | 18.7 | Aqua Regia Digestion |
| Pr, Praseodymium (ppm) | 1.33 | 0.26 | 0.98 | 1.69 | Aqua Regia Digestion |
| Rb, Rubidium (ppm) | 5.25 | 0.367 | 4.94 | 5.57 | Aqua Regia Digestion |
| Re, Rhenium (ppm) | 0.002 | 0.000 | 0.001 | 0.003 | Aqua Regia Digestion |
| S, Sulphur (wt.%) | 0.295 | 0.017 | 0.283 | 0.307 | Aqua Regia Digestion |
| Sb, Antimony (ppm) | 1.20 | 0.105 | 1.11 | 1.30 | Aqua Regia Digestion |
| Sc, Scandium (ppm) | 5.08 | 0.70 | 4.61 | 5.54 | Aqua Regia Digestion |
| Sn, Tin (ppm) | 0.57 | 0.09 | 0.48 | 0.65 | Aqua Regia Digestion |
| Sr, Strontium (ppm) | 35.3 | 4.2 | 32.3 | 38.2 | Aqua Regia Digestion |
| Ta, Tantalum (ppm) | < 0.010 | IND | IND | IND | Aqua Regia Digestion |
| Tb, Terbium (ppm) | 0.32 | 0.05 | 0.25 | 0.39 | Aqua Regia Digestion |
| Te, Tellurium (ppm) | 0.11 | 0.01 | 0.09 | 0.13 | Aqua Regia Digestion |
| Th, Thorium (ppm) | 0.66 | 0.063 | 0.61 | 0.71 | Aqua Regia Digestion |
| Ti, Titanium (wt.%) | 0.334 | 0.037 | 0.305 | 0.362 | Aqua Regia Digestion |
| Tl, Thallium (ppm) | 0.091 | 0.006 | 0.082 | 0.100 | Aqua Regia Digestion |
| U, Uranium (ppm) | 0.16 | 0.010 | 0.15 | 0.17 | Aqua Regia Digestion |
| V, Vanadium (ppm) | 130 | 12 | 121 | 138 | Aqua Regia Digestion |
| W, Tungsten (ppm) | 13.2 | 1.9 | 12.0 | 14.4 | Aqua Regia Digestion |
| Y, Yttrium (ppm) | 11.0 | 0.74 | 10.3 | 11.7 | Aqua Regia Digestion |
| Zn, Zinc (ppm) | 114 | 6 | 110 | 118 | Aqua Regia Digestion |
| Zr, Zirconium (ppm) | 14.5 | 1.30 | 13.4 | 15.7 | Aqua Regia Digestion |
Характеристики продукта
Состояние
primary
Матрица
greenstone
Минерализация
orogenic lode gold
Наличие
available
Сертифицированные справочные значения
| Аналит | Сертифицированное значение | Неопределённость (1SD) | 95% доверительный нижний | 95% доверительный верхний | Метод |
|---|---|---|---|---|---|
| Ce - Cerium (ppm) | 12.3 | - | - | - | 4-Acid Digestion |
| Dy - Dysprosium (ppm) | 3.90 | - | - | - | 4-Acid Digestion |
| Er - Erbium (ppm) | 2.29 | - | - | - | 4-Acid Digestion |
| Eu - Europium (ppm) | 0.97 | - | - | - | 4-Acid Digestion |
| Gd - Gadolinium (ppm) | 3.28 | - | - | - | 4-Acid Digestion |
| Ho - Holmium (ppm) | 0.79 | - | - | - | 4-Acid Digestion |
| La - Lanthanum (ppm) | 5.15 | - | - | - | 4-Acid Digestion |
| Lu - Lutetium (ppm) | 0.34 | - | - | - | 4-Acid Digestion |
| Nd - Neodymium (ppm) | 8.44 | - | - | - | 4-Acid Digestion |
| Pr - Praseodymium (ppm) | 1.74 | - | - | - | 4-Acid Digestion |
| Sm - Samarium (ppm) | 2.58 | - | - | - | 4-Acid Digestion |
| Tb - Terbium (ppm) | 0.58 | - | - | - | 4-Acid Digestion |
| Tm - Thulium (ppm) | 0.32 | - | - | - | 4-Acid Digestion |
| Y - Yttrium (ppm) | 19.9 | - | - | - | 4-Acid Digestion |
| Yb - Ytterbium (ppm) | 2.20 | - | - | - | 4-Acid Digestion |
| Ag - Silver (ppm) | 0.898 | - | - | - | Aqua Regia |
| As - Arsenic (ppm) | 46.5 | - | - | - | Aqua Regia |
| Bi - Bismuth (ppm) | 0.25 | - | - | - | Aqua Regia |
| Cd - Cadmium (ppm) | 0.48 | - | - | - | Aqua Regia |
| Co - Cobalt (ppm) | 29.7 | - | - | - | Aqua Regia |
| Cu - Copper (ppm) | 181 | - | - | - | Aqua Regia |
| Mo - Molybdenum (ppm) | 2.21 | - | - | - | Aqua Regia |
| Pb - Lead (ppm) | 17.9 | - | - | - | Aqua Regia |
| Te - Tellurium (ppm) | 0.11 | - | - | - | Aqua Regia |
| Tl - Thallium (ppm) | 0.091 | - | - | - | Aqua Regia |
SD = стандартное отклонение | CL = 95% доверительные пределы
Методы: AR = царская водка, 4-Acid = четырёхкислотное разложение, LBF = сплавление с боратом лития, FA/AAS = пробирный анализ / AAS, LECO = анализ горения LECO
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