
OREAS 907b
SKU: 907b
OREAS 907b was prepared from a blend of copper and gold oxide ores and barren
weathered rhyodacite. The copper ore was sourced from a copper-rich zone within
MMG’s VMS Gossan Hill deposit at Golden Grove (Western Australia, AU). The gold
ore was sourced from the Stawell Gold Mine (Victoria, AU). The rhyodacite was
sourced from a quarry approximately 30km east of Melbourne, Australia.
Twenty-eight commercial analytical laboratories participated in the program
using the following methods:
Gold by fire assay with AAS, ICP-OES or ICP-MS finish
Gold by aqua regia digestion (15-30g sample weight) with AAS, ICP-OES or
ICP-MS finish
Full ICP-OES and ICP-MS elemental suites by 4-acid (HNO3-HF-HClO4-HCl)
digestion
Full ICP-OES and ICP-MS elemental suites by aqua regia digestion
Copper by Sequential leach: acid leach, alkaline leach, residual leach and
calculated total
Instrumental neutron activation analysis for Au on 20 x 85mg subsamples was
also undertaken at ANSTO, Lucas Heights to confirm
homogeneity.
Specifications
- State: oxide
- Matrix: weathered rhyodacite
- Mineralisation: oxidised VMS
- CRM Group: Cu ore, Au, Au-Cu ore
Certified Values
| Analyte | Certified Value | 1SD | 95% CL Low | 95% CL High | Method |
|---|---|---|---|---|---|
| Cu, Copper (wt.%) | 0.623 | 0.020 | 0.607 | 0.640 | 4-Acid Digestion |
| Cu-Sol(H2SO4), Copper soluble (sulphuric) (wt.%) | 0.514 | 0.018 | 0.501 | 0.527 | Sequential Leach |
| Au, Gold (ppm) | 0.119 | 0.004 | 0.117 | 0.120 | Pb Fire Assay |
| Au, Gold (ppm) | 0.118 | 0.010 | 0.113 | 0.123 | Aqua Regia Digestion (sample weights 10-50g) |
| Ag, Silver (ppm) | 1.19 | 0.095 | 1.11 | 1.27 | 4-Acid Digestion |
| Al, Aluminium (wt.%) | 7.09 | 0.255 | 6.86 | 7.32 | 4-Acid Digestion |
| As, Arsenic (ppm) | 30.8 | 2.21 | 29.0 | 32.6 | 4-Acid Digestion |
| Ba, Barium (ppm) | 2542 | 99 | 2452 | 2632 | 4-Acid Digestion |
| Be, Beryllium (ppm) | 2.78 | 0.259 | 2.63 | 2.94 | 4-Acid Digestion |
| Bi, Bismuth (ppm) | 19.0 | 0.89 | 18.1 | 19.9 | 4-Acid Digestion |
| Ca, Calcium (wt.%) | 0.551 | 0.025 | 0.533 | 0.568 | 4-Acid Digestion |
| Cd, Cadmium (ppm) | 0.49 | 0.048 | 0.44 | 0.54 | 4-Acid Digestion |
| Ce, Cerium (ppm) | 90 | 4.8 | 85 | 94 | 4-Acid Digestion |
| Co, Cobalt (ppm) | 32.7 | 1.91 | 31.2 | 34.2 | 4-Acid Digestion |
| Cr, Chromium (ppm) | 12.8 | 1.6 | 11.2 | 14.4 | 4-Acid Digestion |
| Cs, Caesium (ppm) | 6.50 | 0.293 | 6.19 | 6.81 | 4-Acid Digestion |
| Dy, Dysprosium (ppm) | 3.52 | 0.231 | 3.24 | 3.79 | 4-Acid Digestion |
| Er, Erbium (ppm) | 1.12 | 0.077 | 1.03 | 1.22 | 4-Acid Digestion |
| Eu, Europium (ppm) | 1.64 | 0.24 | 1.41 | 1.87 | 4-Acid Digestion |
| Fe, Iron (wt.%) | 7.33 | 0.242 | 7.14 | 7.52 | 4-Acid Digestion |
| Ga, Gallium (ppm) | 32.5 | 1.70 | 31.0 | 34.0 | 4-Acid Digestion |
| Gd, Gadolinium (ppm) | 5.88 | 0.331 | 5.47 | 6.28 | 4-Acid Digestion |
| Ge, Germanium (ppm) | 0.20 | 0.05 | 0.14 | 0.26 | 4-Acid Digestion |
| Hf, Hafnium (ppm) | 6.69 | 0.471 | 6.35 | 7.03 | 4-Acid Digestion |
| Ho, Holmium (ppm) | 0.52 | 0.023 | 0.49 | 0.55 | 4-Acid Digestion |
| In, Indium (ppm) | 2.20 | 0.123 | 2.09 | 2.32 | 4-Acid Digestion |
| K, Potassium (wt.%) | 2.69 | 0.095 | 2.61 | 2.77 | 4-Acid Digestion |
| La, Lanthanum (ppm) | 42.8 | 3.05 | 39.9 | 45.7 | 4-Acid Digestion |
| Li, Lithium (ppm) | 18.8 | 0.93 | 17.9 | 19.8 | 4-Acid Digestion |
| Lu, Lutetium (ppm) | 0.11 | 0.009 | 0.10 | 0.13 | 4-Acid Digestion |
| Mg, Magnesium (wt.%) | 0.329 | 0.012 | 0.320 | 0.338 | 4-Acid Digestion |
| Mn, Manganese (wt.%) | 0.031 | 0.001 | 0.030 | 0.033 | 4-Acid Digestion |
| Mo, Molybdenum (ppm) | 7.52 | 0.479 | 7.13 | 7.92 | 4-Acid Digestion |
| Na, Sodium (wt.%) | 2.30 | 0.079 | 2.24 | 2.36 | 4-Acid Digestion |
| Nb, Niobium (ppm) | 16.6 | 0.90 | 15.7 | 17.5 | 4-Acid Digestion |
| Nd, Neodymium (ppm) | 37.8 | 2.85 | 35.2 | 40.3 | 4-Acid Digestion |
| Ni, Nickel (ppm) | 4.35 | 0.322 | 3.90 | 4.80 | 4-Acid Digestion |
| P, Phosphorus (wt.%) | 0.028 | 0.002 | 0.027 | 0.030 | 4-Acid Digestion |
| Pb, Lead (ppm) | 36.9 | 1.84 | 35.3 | 38.6 | 4-Acid Digestion |
| Pr, Praseodymium (ppm) | 10.1 | 0.82 | 9.3 | 10.9 | 4-Acid Digestion |
| Rb, Rubidium (ppm) | 131 | 7 | 124 | 137 | 4-Acid Digestion |
| Re, Rhenium (ppm) | 0.003 | 0.001 | 0.002 | 0.004 | 4-Acid Digestion |
| S, Sulphur (wt.%) | 0.083 | 0.005 | 0.081 | 0.086 | 4-Acid Digestion |
| Sb, Antimony (ppm) | 2.83 | 0.160 | 2.68 | 2.98 | 4-Acid Digestion |
| Sc, Scandium (ppm) | 5.05 | 0.284 | 4.72 | 5.38 | 4-Acid Digestion |
| Se, Selenium (ppm) | 8.74 | 0.746 | 7.81 | 9.67 | 4-Acid Digestion |
| Sm, Samarium (ppm) | 7.39 | 0.595 | 6.70 | 8.08 | 4-Acid Digestion |
| Sn, Tin (ppm) | 4.66 | 0.329 | 4.26 | 5.06 | 4-Acid Digestion |
| Sr, Strontium (ppm) | 150 | 7 | 145 | 154 | 4-Acid Digestion |
| Ta, Tantalum (ppm) | 1.24 | 0.12 | 1.13 | 1.34 | 4-Acid Digestion |
| Tb, Terbium (ppm) | 0.77 | 0.041 | 0.72 | 0.83 | 4-Acid Digestion |
| Te, Tellurium (ppm) | 0.36 | 0.034 | 0.32 | 0.40 | 4-Acid Digestion |
| Th, Thorium (ppm) | 13.9 | 0.85 | 13.2 | 14.6 | 4-Acid Digestion |
| Ti, Titanium (wt.%) | 0.112 | 0.005 | 0.105 | 0.118 | 4-Acid Digestion |
| Tl, Thallium (ppm) | 0.68 | 0.038 | 0.64 | 0.72 | 4-Acid Digestion |
| Tm, Thulium (ppm) | 0.13 | 0.007 | 0.12 | 0.15 | 4-Acid Digestion |
| U, Uranium (ppm) | 4.66 | 0.262 | 4.44 | 4.88 | 4-Acid Digestion |
| V, Vanadium (ppm) | 6.53 | 0.73 | 6.16 | 6.90 | 4-Acid Digestion |
| W, Tungsten (ppm) | 2.93 | 0.258 | 2.69 | 3.17 | 4-Acid Digestion |
| Y, Yttrium (ppm) | 15.2 | 0.84 | 14.4 | 15.9 | 4-Acid Digestion |
| Yb, Ytterbium (ppm) | 0.76 | 0.056 | 0.66 | 0.87 | 4-Acid Digestion |
| Zn, Zinc (ppm) | 171 | 5 | 166 | 176 | 4-Acid Digestion |
| Zr, Zirconium (ppm) | 245 | 11 | 237 | 254 | 4-Acid Digestion |
| Ag, Silver (ppm) | 1.13 | 0.044 | 1.08 | 1.19 | Aqua Regia Digestion |
| Al, Aluminium (wt.%) | 0.729 | 0.053 | 0.702 | 0.755 | Aqua Regia Digestion |
| As, Arsenic (ppm) | 28.1 | 1.93 | 26.7 | 29.5 | Aqua Regia Digestion |
| B, Boron (ppm) | < 10.0 | IND | IND | IND | Aqua Regia Digestion |
| Ba, Barium (ppm) | 166 | 11 | 158 | 175 | Aqua Regia Digestion |
| Be, Beryllium (ppm) | 0.81 | 0.046 | 0.78 | 0.85 | Aqua Regia Digestion |
| Bi, Bismuth (ppm) | 18.8 | 0.84 | 18.0 | 19.6 | Aqua Regia Digestion |
| Ca, Calcium (wt.%) | 0.312 | 0.011 | 0.301 | 0.322 | Aqua Regia Digestion |
| Cd, Cadmium (ppm) | 0.46 | 0.030 | 0.44 | 0.49 | Aqua Regia Digestion |
| Ce, Cerium (ppm) | 71 | 3.4 | 68 | 74 | Aqua Regia Digestion |
| Co, Cobalt (ppm) | 30.0 | 1.36 | 28.8 | 31.2 | Aqua Regia Digestion |
| Cr, Chromium (ppm) | 12.4 | 0.89 | 11.4 | 13.3 | Aqua Regia Digestion |
| Cs, Caesium (ppm) | 0.97 | 0.12 | 0.88 | 1.06 | Aqua Regia Digestion |
| Cu, Copper (wt.%) | 0.625 | 0.012 | 0.612 | 0.638 | Aqua Regia Digestion |
| Fe, Iron (wt.%) | 6.60 | 0.237 | 6.42 | 6.79 | Aqua Regia Digestion |
| Ga, Gallium (ppm) | 12.0 | 0.90 | 11.3 | 12.6 | Aqua Regia Digestion |
| Ge, Germanium (ppm) | 0.14 | 0.03 | 0.12 | 0.17 | Aqua Regia Digestion |
| Hf, Hafnium (ppm) | 1.11 | 0.12 | 1.00 | 1.23 | Aqua Regia Digestion |
| In, Indium (ppm) | 2.05 | 0.069 | 1.97 | 2.13 | Aqua Regia Digestion |
| K, Potassium (wt.%) | 0.215 | 0.011 | 0.203 | 0.228 | Aqua Regia Digestion |
| La, Lanthanum (ppm) | 35.0 | 2.19 | 33.3 | 36.6 | Aqua Regia Digestion |
| Li, Lithium (ppm) | 3.41 | 0.60 | 2.95 | 3.86 | Aqua Regia Digestion |
| Lu, Lutetium (ppm) | 0.032 | 0.003 | 0.029 | 0.036 | Aqua Regia Digestion |
| Mg, Magnesium (wt.%) | 0.165 | 0.010 | 0.154 | 0.176 | Aqua Regia Digestion |
| Mn, Manganese (wt.%) | 0.028 | 0.001 | 0.027 | 0.029 | Aqua Regia Digestion |
| Mo, Molybdenum (ppm) | 6.98 | 0.439 | 6.67 | 7.29 | Aqua Regia Digestion |
| Na, Sodium (wt.%) | 0.064 | 0.005 | 0.058 | 0.070 | Aqua Regia Digestion |
| Nb, Niobium (ppm) | 0.31 | 0.10 | 0.23 | 0.38 | Aqua Regia Digestion |
| Ni, Nickel (ppm) | 3.71 | 0.329 | 3.37 | 4.04 | Aqua Regia Digestion |
| P, Phosphorus (wt.%) | 0.024 | 0.001 | 0.023 | 0.025 | Aqua Regia Digestion |
| Pb, Lead (ppm) | 23.8 | 1.00 | 22.8 | 24.8 | Aqua Regia Digestion |
| Rb, Rubidium (ppm) | 12.7 | 0.79 | 12.0 | 13.4 | Aqua Regia Digestion |
| Re, Rhenium (ppm) | 0.002 | 0.001 | 0.001 | 0.003 | Aqua Regia Digestion |
| S, Sulphur (wt.%) | 0.082 | 0.004 | 0.075 | 0.088 | Aqua Regia Digestion |
| Sb, Antimony (ppm) | 1.79 | 0.25 | 1.64 | 1.93 | Aqua Regia Digestion |
| Sc, Scandium (ppm) | 1.94 | 0.188 | 1.79 | 2.09 | Aqua Regia Digestion |
| Se, Selenium (ppm) | 9.01 | 0.621 | 8.45 | 9.56 | Aqua Regia Digestion |
| Sn, Tin (ppm) | 1.93 | 0.090 | 1.82 | 2.04 | Aqua Regia Digestion |
| Sr, Strontium (ppm) | 10.9 | 0.47 | 10.4 | 11.4 | Aqua Regia Digestion |
| Ta, Tantalum (ppm) | < 0.010 | IND | IND | IND | Aqua Regia Digestion |
| Tb, Terbium (ppm) | 0.39 | 0.027 | 0.36 | 0.43 | Aqua Regia Digestion |
| Te, Tellurium (ppm) | 0.33 | 0.04 | 0.29 | 0.38 | Aqua Regia Digestion |
| Th, Thorium (ppm) | 7.81 | 0.493 | 7.45 | 8.16 | Aqua Regia Digestion |
| Ti, Titanium (wt.%) | 0.017 | 0.003 | 0.015 | 0.018 | Aqua Regia Digestion |
| Tl, Thallium (ppm) | 0.090 | 0.015 | 0.079 | 0.102 | Aqua Regia Digestion |
| U, Uranium (ppm) | 2.06 | 0.179 | 1.93 | 2.18 | Aqua Regia Digestion |
| V, Vanadium (ppm) | 4.16 | 0.59 | 3.74 | 4.58 | Aqua Regia Digestion |
| W, Tungsten (ppm) | 0.87 | 0.13 | 0.77 | 0.96 | Aqua Regia Digestion |
| Y, Yttrium (ppm) | 6.27 | 0.563 | 5.93 | 6.61 | Aqua Regia Digestion |
| Yb, Ytterbium (ppm) | 0.28 | 0.04 | 0.20 | 0.36 | Aqua Regia Digestion |
| Zn, Zinc (ppm) | 100 | 3.7 | 97 | 103 | Aqua Regia Digestion |
| Zr, Zirconium (ppm) | 43.2 | 4.31 | 40.1 | 46.3 | Aqua Regia Digestion |
| Cu-Res(4A), Copper residual (post leach) (wt.%) | 0.072 | 0.006 | 0.069 | 0.076 | Sequential Leach |
| Cu-Sol(CN), Copper soluble (cyanidation) (wt.%) | 0.029 | 0.002 | 0.027 | 0.031 | Sequential Leach |
| Cu-Tot(Calc), Copper total (calculated) (wt.%) | 0.618 | 0.018 | 0.601 | 0.635 | Sequential Leach |
Ürün Özellikleri
Sertifikalı Referans Değerler
| Analit | Sertifikalı Değer | Belirsizlik (1SD) | %95 Güven Aralığı Alt | %95 Güven Aralığı Üst | Yöntem |
|---|---|---|---|---|---|
| Ce - Cerium (ppm) | 90 | - | - | - | 4-Acid Digestion |
| Dy - Dysprosium (ppm) | 3.52 | - | - | - | 4-Acid Digestion |
| Er - Erbium (ppm) | 1.12 | - | - | - | 4-Acid Digestion |
| Eu - Europium (ppm) | 1.64 | - | - | - | 4-Acid Digestion |
| Gd - Gadolinium (ppm) | 5.88 | - | - | - | 4-Acid Digestion |
| Ho - Holmium (ppm) | 0.52 | - | - | - | 4-Acid Digestion |
| La - Lanthanum (ppm) | 42.8 | - | - | - | 4-Acid Digestion |
| Lu - Lutetium (ppm) | 0.11 | - | - | - | 4-Acid Digestion |
| Nd - Neodymium (ppm) | 37.8 | - | - | - | 4-Acid Digestion |
| Pr - Praseodymium (ppm) | 10.1 | - | - | - | 4-Acid Digestion |
| Sm - Samarium (ppm) | 7.39 | - | - | - | 4-Acid Digestion |
| Tb - Terbium (ppm) | 0.77 | - | - | - | 4-Acid Digestion |
| Tm - Thulium (ppm) | 0.13 | - | - | - | 4-Acid Digestion |
| Y - Yttrium (ppm) | 15.2 | - | - | - | 4-Acid Digestion |
| Yb - Ytterbium (ppm) | 0.76 | - | - | - | 4-Acid Digestion |
| Ag - Silver (ppm) | 1.13 | - | - | - | Aqua Regia |
| As - Arsenic (ppm) | 28.1 | - | - | - | Aqua Regia |
| Bi - Bismuth (ppm) | 18.8 | - | - | - | Aqua Regia |
| Cd - Cadmium (ppm) | 0.46 | - | - | - | Aqua Regia |
| Co - Cobalt (ppm) | 30.0 | - | - | - | Aqua Regia |
| Mo - Molybdenum (ppm) | 6.98 | - | - | - | Aqua Regia |
| Sn - Tin (ppm) | 1.93 | - | - | - | Aqua Regia |
| Tl - Thallium (ppm) | 0.090 | - | - | - | Aqua Regia |
| Zn - Zinc (ppm) | 100 | - | - | - | Aqua Regia |
SD = Standart Sapma | CL = %95 Güven Limitleri
Yöntemler: AR = Kral Suyu, 4-Acid = 4-Asit Çözünürlük, LBF = Lityum Borat Füzyon, FA/AAS = Ateş Tahlili / AAS, LECO = LECO Yanma Analizi
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