OREAS 906
oxide
weathered rhyodacite
oxidised VMS
OREAS 906
SKU: 906
OREAS 906 was prepared from a blend of copper oxide ore and barren weathered
rhyodacite. The ore was sourced from a copper rich zone within MMG’s VMS Gossan
Hill deposit at Golden Grove and the rhyodacite was obtained from a quarry
approximately 30km east of Melbourne, Australia. The Gossan Hill deposit is
located 338km NNE of Perth in the Murchison Province of the Archaen Yilgarn
Craton in Western Australia. The ore deposit is hosted within and underlain by a
layered rhyodacitic volcanoclastic succession. The pre-oxidation mineralisation
assemblage consisted of sphalerite, chalcopyrite and lesser galena with a gangue
of pyrite, pyrrhotite and magnetite.
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.%) | 0.310 | 0.010 | 0.307 | 0.313 | 4-Acid Digestion |
| Cu-Sol(H2SO4), Copper soluble (sulphuric) (wt.%) | 0.259 | 0.011 | 0.255 | 0.263 | Sulphuric Acid 5% Leach |
| Au, Gold (ppb) | 49 | 2.5 | 48 | 50 | Pb Fire Assay |
| Ag, Silver (ppm) | 0.754 | 0.106 | 0.710 | 0.797 | 4-Acid Digestion |
| Al, Aluminium (wt.%) | 7.36 | 0.279 | 7.26 | 7.46 | 4-Acid Digestion |
| As, Arsenic (ppm) | 22.8 | 1.43 | 22.2 | 23.3 | 4-Acid Digestion |
| Ba, Barium (ppm) | 2714 | 128 | 2667 | 2762 | 4-Acid Digestion |
| Be, Beryllium (ppm) | 2.94 | 0.218 | 2.87 | 3.02 | 4-Acid Digestion |
| Bi, Bismuth (ppm) | 11.1 | 0.53 | 10.9 | 11.3 | 4-Acid Digestion |
| Ca, Calcium (wt.%) | 0.566 | 0.027 | 0.557 | 0.575 | 4-Acid Digestion |
| Cd, Cadmium (ppm) | 0.42 | 0.04 | 0.41 | 0.44 | 4-Acid Digestion |
| Ce, Cerium (ppm) | 93 | 7.0 | 90 | 96 | 4-Acid Digestion |
| Co, Cobalt (ppm) | 24.2 | 1.26 | 23.8 | 24.7 | 4-Acid Digestion |
| Cr, Chromium (ppm) | 8.96 | 1.81 | 8.23 | 9.69 | 4-Acid Digestion |
| Cs, Caesium (ppm) | 6.80 | 0.442 | 6.60 | 6.99 | 4-Acid Digestion |
| Dy, Dysprosium (ppm) | 3.70 | 0.284 | 3.48 | 3.92 | 4-Acid Digestion |
| Er, Erbium (ppm) | 1.13 | 0.062 | 1.09 | 1.16 | 4-Acid Digestion |
| Eu, Europium (ppm) | 1.54 | 0.091 | 1.46 | 1.62 | 4-Acid Digestion |
| Fe, Iron (wt.%) | 5.50 | 0.235 | 5.41 | 5.59 | 4-Acid Digestion |
| Ga, Gallium (ppm) | 28.4 | 1.41 | 27.8 | 29.0 | 4-Acid Digestion |
| Gd, Gadolinium (ppm) | 6.20 | 0.65 | 5.61 | 6.78 | 4-Acid Digestion |
| Hf, Hafnium (ppm) | 6.99 | 0.435 | 6.81 | 7.18 | 4-Acid Digestion |
| Ho, Holmium (ppm) | 0.50 | 0.039 | 0.48 | 0.52 | 4-Acid Digestion |
| In, Indium (ppm) | 1.23 | 0.086 | 1.19 | 1.27 | 4-Acid Digestion |
| K, Potassium (wt.%) | 2.84 | 0.109 | 2.80 | 2.87 | 4-Acid Digestion |
| La, Lanthanum (ppm) | 46.7 | 2.83 | 45.6 | 47.8 | 4-Acid Digestion |
| Li, Lithium (ppm) | 19.3 | 1.16 | 18.9 | 19.8 | 4-Acid Digestion |
| Lu, Lutetium (ppm) | 0.10 | 0.008 | 0.10 | 0.10 | 4-Acid Digestion |
| Mg, Magnesium (wt.%) | 0.277 | 0.015 | 0.271 | 0.282 | 4-Acid Digestion |
| Mn, Manganese (wt.%) | 0.037 | 0.002 | 0.037 | 0.038 | 4-Acid Digestion |
| Mo, Molybdenum (ppm) | 4.05 | 0.274 | 3.95 | 4.15 | 4-Acid Digestion |
| Na, Sodium (wt.%) | 2.42 | 0.127 | 2.38 | 2.47 | 4-Acid Digestion |
| Nb, Niobium (ppm) | 17.8 | 1.30 | 17.2 | 18.3 | 4-Acid Digestion |
| Nd, Neodymium (ppm) | 39.7 | 2.41 | 38.0 | 41.5 | 4-Acid Digestion |
| Ni, Nickel (ppm) | 4.89 | 0.68 | 4.69 | 5.09 | 4-Acid Digestion |
| P, Phosphorus (wt.%) | 0.027 | 0.002 | 0.027 | 0.028 | 4-Acid Digestion |
| Pb, Lead (ppm) | 36.1 | 2.89 | 35.0 | 37.1 | 4-Acid Digestion |
| Pr, Praseodymium (ppm) | 10.7 | 0.69 | 10.2 | 11.2 | 4-Acid Digestion |
| Rb, Rubidium (ppm) | 138 | 4 | 136 | 139 | 4-Acid Digestion |
| S, Sulphur (wt.%) | 0.038 | 0.004 | 0.037 | 0.040 | 4-Acid Digestion |
| Sb, Antimony (ppm) | 2.36 | 0.147 | 2.29 | 2.43 | 4-Acid Digestion |
| Sc, Scandium (ppm) | 4.60 | 0.448 | 4.43 | 4.77 | 4-Acid Digestion |
| Se, Selenium (ppm) | 4.99 | 0.54 | 4.77 | 5.21 | 4-Acid Digestion |
| Sm, Samarium (ppm) | 7.71 | 0.345 | 7.44 | 7.97 | 4-Acid Digestion |
| Sn, Tin (ppm) | 4.33 | 0.320 | 4.21 | 4.46 | 4-Acid Digestion |
| Sr, Strontium (ppm) | 156 | 8 | 153 | 159 | 4-Acid Digestion |
| Ta, Tantalum (ppm) | 1.35 | 0.086 | 1.31 | 1.39 | 4-Acid Digestion |
| Tb, Terbium (ppm) | 0.77 | 0.069 | 0.73 | 0.82 | 4-Acid Digestion |
| Te, Tellurium (ppm) | < 0.20 | IND | IND | IND | 4-Acid Digestion |
| Th, Thorium (ppm) | 14.8 | 0.80 | 14.5 | 15.1 | 4-Acid Digestion |
| Ti, Titanium (wt.%) | 0.113 | 0.006 | 0.111 | 0.115 | 4-Acid Digestion |
| Tl, Thallium (ppm) | 0.71 | 0.060 | 0.69 | 0.74 | 4-Acid Digestion |
| Tm, Thulium (ppm) | 0.11 | 0.01 | 0.10 | 0.12 | 4-Acid Digestion |
| U, Uranium (ppm) | 5.06 | 0.348 | 4.91 | 5.21 | 4-Acid Digestion |
| V, Vanadium (ppm) | 5.38 | 0.92 | 4.97 | 5.78 | 4-Acid Digestion |
| W, Tungsten (ppm) | 2.70 | 0.212 | 2.62 | 2.78 | 4-Acid Digestion |
| Y, Yttrium (ppm) | 15.8 | 0.95 | 15.4 | 16.1 | 4-Acid Digestion |
| Yb, Ytterbium (ppm) | 0.70 | 0.052 | 0.67 | 0.72 | 4-Acid Digestion |
| Zn, Zinc (ppm) | 163 | 8 | 161 | 166 | 4-Acid Digestion |
| Zr, Zirconium (ppm) | 261 | 14 | 256 | 266 | 4-Acid Digestion |
| Al, Aluminium (wt.%) | 7.48 | 0.186 | 7.41 | 7.56 | Borate / Peroxide Fusion ICP |
| As, Arsenic (ppm) | 23.6 | 2.8 | 22.1 | 25.2 | Borate / Peroxide Fusion ICP |
| Ba, Barium (ppm) | 2811 | 91 | 2765 | 2857 | Borate / Peroxide Fusion ICP |
| Be, Beryllium (ppm) | 2.99 | 0.51 | 2.66 | 3.33 | Borate / Peroxide Fusion ICP |
| Bi, Bismuth (ppm) | 11.6 | 0.71 | 11.0 | 12.2 | Borate / Peroxide Fusion ICP |
| Ca, Calcium (wt.%) | 0.582 | 0.030 | 0.571 | 0.594 | Borate / Peroxide Fusion ICP |
| Ce, Cerium (ppm) | 96 | 3.3 | 94 | 98 | Borate / Peroxide Fusion ICP |
| Co, Cobalt (ppm) | 24.9 | 3.2 | 23.6 | 26.1 | Borate / Peroxide Fusion ICP |
| Cs, Caesium (ppm) | 7.00 | 0.429 | 6.78 | 7.23 | Borate / Peroxide Fusion ICP |
| Cu, Copper (wt.%) | 0.316 | 0.010 | 0.312 | 0.320 | Borate / Peroxide Fusion ICP |
| Dy, Dysprosium (ppm) | 3.90 | 0.256 | 3.77 | 4.02 | Borate / Peroxide Fusion ICP |
| Er, Erbium (ppm) | 1.16 | 0.110 | 1.09 | 1.23 | Borate / Peroxide Fusion ICP |
| Eu, Europium (ppm) | 1.55 | 0.155 | 1.46 | 1.64 | Borate / Peroxide Fusion ICP |
| Fe, Iron (wt.%) | 5.77 | 0.105 | 5.74 | 5.81 | Borate / Peroxide Fusion ICP |
| Ga, Gallium (ppm) | 29.0 | 2.09 | 27.7 | 30.2 | Borate / Peroxide Fusion ICP |
| Gd, Gadolinium (ppm) | 6.18 | 0.331 | 6.05 | 6.31 | Borate / Peroxide Fusion ICP |
| Hf, Hafnium (ppm) | 7.49 | 0.593 | 6.94 | 8.05 | Borate / Peroxide Fusion ICP |
| Ho, Holmium (ppm) | 0.54 | 0.06 | 0.50 | 0.59 | Borate / Peroxide Fusion ICP |
| In, Indium (ppm) | 1.29 | 0.16 | 1.17 | 1.40 | Borate / Peroxide Fusion ICP |
| K, Potassium (wt.%) | 2.94 | 0.091 | 2.90 | 2.97 | Borate / Peroxide Fusion ICP |
| La, Lanthanum (ppm) | 48.3 | 1.98 | 47.3 | 49.2 | Borate / Peroxide Fusion ICP |
| Li, Lithium (ppm) | 19.6 | 1.46 | 18.7 | 20.5 | Borate / Peroxide Fusion ICP |
| Mg, Magnesium (wt.%) | 0.288 | 0.018 | 0.280 | 0.296 | Borate / Peroxide Fusion ICP |
| Mn, Manganese (wt.%) | 0.039 | 0.001 | 0.039 | 0.039 | Borate / Peroxide Fusion ICP |
| Mo, Molybdenum (ppm) | 4.25 | 0.83 | 3.76 | 4.75 | Borate / Peroxide Fusion ICP |
| Nb, Niobium (ppm) | 17.9 | 1.72 | 17.0 | 18.8 | Borate / Peroxide Fusion ICP |
| Nd, Neodymium (ppm) | 40.3 | 1.98 | 39.0 | 41.5 | Borate / Peroxide Fusion ICP |
| P, Phosphorus (wt.%) | 0.028 | 0.004 | 0.026 | 0.030 | Borate / Peroxide Fusion ICP |
| Pb, Lead (ppm) | 36.6 | 4.0 | 34.4 | 38.9 | Borate / Peroxide Fusion ICP |
| Pr, Praseodymium (ppm) | 10.8 | 0.64 | 10.4 | 11.3 | Borate / Peroxide Fusion ICP |
| Rb, Rubidium (ppm) | 137 | 6 | 134 | 140 | Borate / Peroxide Fusion ICP |
| Sb, Antimony (ppm) | 2.47 | 0.45 | 2.20 | 2.73 | Borate / Peroxide Fusion ICP |
| Si, Silicon (wt.%) | 31.20 | 0.629 | 30.86 | 31.53 | Borate / Peroxide Fusion ICP |
| Sm, Samarium (ppm) | 7.60 | 0.348 | 7.39 | 7.82 | Borate / Peroxide Fusion ICP |
| Sn, Tin (ppm) | 10.8 | 1.2 | 10.0 | 11.7 | Borate / Peroxide Fusion ICP |
| Sr, Strontium (ppm) | 161 | 8 | 157 | 165 | Borate / Peroxide Fusion ICP |
| Ta, Tantalum (ppm) | 1.39 | 0.131 | 1.31 | 1.48 | Borate / Peroxide Fusion ICP |
| Tb, Terbium (ppm) | 0.80 | 0.055 | 0.76 | 0.84 | Borate / Peroxide Fusion ICP |
| Th, Thorium (ppm) | 14.6 | 0.66 | 14.2 | 15.0 | Borate / Peroxide Fusion ICP |
| Ti, Titanium (wt.%) | 0.119 | 0.005 | 0.118 | 0.121 | Borate / Peroxide Fusion ICP |
| Tl, Thallium (ppm) | 0.71 | 0.12 | 0.67 | 0.75 | Borate / Peroxide Fusion ICP |
| U, Uranium (ppm) | 5.14 | 0.273 | 4.96 | 5.32 | Borate / Peroxide Fusion ICP |
| V, Vanadium (ppm) | 7.00 | 1.12 | 6.03 | 7.97 | Borate / Peroxide Fusion ICP |
| W, Tungsten (ppm) | 2.71 | 0.41 | 2.52 | 2.91 | Borate / Peroxide Fusion ICP |
| Y, Yttrium (ppm) | 16.6 | 1.32 | 16.0 | 17.3 | Borate / Peroxide Fusion ICP |
| Yb, Ytterbium (ppm) | 0.76 | 0.10 | 0.68 | 0.84 | Borate / Peroxide Fusion ICP |
| Zn, Zinc (ppm) | 163 | 9 | 158 | 167 | Borate / Peroxide Fusion ICP |
| Zr, Zirconium (ppm) | 274 | 16 | 258 | 290 | Borate / Peroxide Fusion ICP |
| Ag, Silver (ppm) | 0.735 | 0.064 | 0.711 | 0.758 | Aqua Regia Digestion |
| Al, Aluminium (wt.%) | 0.787 | 0.060 | 0.763 | 0.810 | Aqua Regia Digestion |
| As, Arsenic (ppm) | 20.4 | 1.37 | 19.9 | 20.9 | Aqua Regia Digestion |
| Au, Gold (ppb) | 51 | 3.2 | 49 | 52 | Aqua Regia Digestion |
| Ba, Barium (ppm) | 241 | 16 | 235 | 248 | Aqua Regia Digestion |
| Be, Beryllium (ppm) | 0.91 | 0.077 | 0.88 | 0.94 | Aqua Regia Digestion |
| Bi, Bismuth (ppm) | 11.0 | 1.2 | 10.5 | 11.4 | Aqua Regia Digestion |
| Ca, Calcium (wt.%) | 0.315 | 0.018 | 0.308 | 0.322 | Aqua Regia Digestion |
| Cd, Cadmium (ppm) | 0.41 | 0.04 | 0.40 | 0.43 | Aqua Regia Digestion |
| Ce, Cerium (ppm) | 79 | 4.9 | 77 | 82 | Aqua Regia Digestion |
| Co, Cobalt (ppm) | 22.8 | 0.94 | 22.5 | 23.1 | Aqua Regia Digestion |
| Cr, Chromium (ppm) | 8.83 | 1.19 | 8.48 | 9.19 | Aqua Regia Digestion |
| Cs, Caesium (ppm) | 1.22 | 0.18 | 1.13 | 1.31 | Aqua Regia Digestion |
| Cu, Copper (wt.%) | 0.315 | 0.007 | 0.313 | 0.317 | Aqua Regia Digestion |
| Dy, Dysprosium (ppm) | 1.71 | 0.33 | 1.45 | 1.97 | Aqua Regia Digestion |
| Er, Erbium (ppm) | 0.43 | 0.08 | 0.36 | 0.50 | Aqua Regia Digestion |
| Eu, Europium (ppm) | 0.97 | 0.094 | 0.89 | 1.04 | Aqua Regia Digestion |
| Fe, Iron (wt.%) | 4.98 | 0.227 | 4.89 | 5.06 | Aqua Regia Digestion |
| Ga, Gallium (ppm) | 8.98 | 0.739 | 8.68 | 9.29 | Aqua Regia Digestion |
| Gd, Gadolinium (ppm) | 3.65 | 0.38 | 3.33 | 3.97 | Aqua Regia Digestion |
| Hf, Hafnium (ppm) | 1.22 | 0.19 | 1.12 | 1.32 | Aqua Regia Digestion |
| Hg, Mercury (ppm) | < 0.050 | IND | IND | IND | Aqua Regia Digestion |
| Ho, Holmium (ppm) | 0.22 | 0.04 | 0.19 | 0.25 | Aqua Regia Digestion |
| In, Indium (ppm) | 1.16 | 0.089 | 1.11 | 1.20 | Aqua Regia Digestion |
| K, Potassium (wt.%) | 0.297 | 0.024 | 0.288 | 0.306 | Aqua Regia Digestion |
| La, Lanthanum (ppm) | 40.0 | 2.33 | 39.1 | 40.8 | Aqua Regia Digestion |
| Li, Lithium (ppm) | 4.18 | 0.69 | 3.88 | 4.47 | Aqua Regia Digestion |
| Lu, Lutetium (ppm) | 0.034 | 0.005 | 0.031 | 0.037 | Aqua Regia Digestion |
| Mg, Magnesium (wt.%) | 0.133 | 0.011 | 0.128 | 0.137 | Aqua Regia Digestion |
| Mn, Manganese (wt.%) | 0.034 | 0.001 | 0.034 | 0.035 | Aqua Regia Digestion |
| Mo, Molybdenum (ppm) | 3.85 | 0.348 | 3.73 | 3.98 | Aqua Regia Digestion |
| Na, Sodium (wt.%) | 0.090 | 0.010 | 0.087 | 0.094 | Aqua Regia Digestion |
| Nd, Neodymium (ppm) | 30.6 | 3.2 | 28.1 | 33.1 | Aqua Regia Digestion |
| Ni, Nickel (ppm) | 4.53 | 0.72 | 4.30 | 4.76 | Aqua Regia Digestion |
| P, Phosphorus (wt.%) | 0.024 | 0.002 | 0.023 | 0.025 | Aqua Regia Digestion |
| Pb, Lead (ppm) | 22.5 | 1.96 | 21.8 | 23.2 | Aqua Regia Digestion |
| Pr, Praseodymium (ppm) | 8.61 | 0.414 | 8.24 | 8.99 | Aqua Regia Digestion |
| Rb, Rubidium (ppm) | 16.7 | 1.27 | 16.1 | 17.3 | Aqua Regia Digestion |
| S, Sulphur (wt.%) | 0.036 | 0.005 | 0.033 | 0.038 | Aqua Regia Digestion |
| Sb, Antimony (ppm) | 1.52 | 0.19 | 1.44 | 1.60 | Aqua Regia Digestion |
| Sc, Scandium (ppm) | 1.76 | 0.19 | 1.69 | 1.84 | Aqua Regia Digestion |
| Se, Selenium (ppm) | 4.54 | 0.76 | 4.22 | 4.85 | Aqua Regia Digestion |
| Sm, Samarium (ppm) | 5.22 | 0.482 | 4.80 | 5.64 | Aqua Regia Digestion |
| Sn, Tin (ppm) | 1.64 | 0.17 | 1.56 | 1.72 | Aqua Regia Digestion |
| Sr, Strontium (ppm) | 11.8 | 0.76 | 11.6 | 12.1 | Aqua Regia Digestion |
| Tb, Terbium (ppm) | 0.43 | 0.05 | 0.40 | 0.47 | Aqua Regia Digestion |
| Te, Tellurium (ppm) | 0.11 | 0.02 | 0.10 | 0.11 | Aqua Regia Digestion |
| Th, Thorium (ppm) | 8.77 | 0.670 | 8.48 | 9.06 | Aqua Regia Digestion |
| Ti, Titanium (wt.%) | 0.017 | 0.003 | 0.016 | 0.018 | Aqua Regia Digestion |
| Tl, Thallium (ppm) | 0.10 | 0.01 | 0.10 | 0.11 | Aqua Regia Digestion |
| Tm, Thulium (ppm) | 0.045 | 0.006 | 0.038 | 0.053 | Aqua Regia Digestion |
| U, Uranium (ppm) | 2.33 | 0.200 | 2.25 | 2.42 | Aqua Regia Digestion |
| W, Tungsten (ppm) | 0.64 | 0.15 | 0.57 | 0.71 | Aqua Regia Digestion |
| Y, Yttrium (ppm) | 6.91 | 0.511 | 6.70 | 7.12 | Aqua Regia Digestion |
| Yb, Ytterbium (ppm) | 0.26 | 0.04 | 0.23 | 0.29 | Aqua Regia Digestion |
| Zn, Zinc (ppm) | 89 | 4.7 | 88 | 91 | Aqua Regia Digestion |
| Zr, Zirconium (ppm) | 47.5 | 4.45 | 45.5 | 49.6 | Aqua Regia Digestion |
| SG, Specific Gravity (Unity) | 2.77 | 0.038 | 2.75 | 2.79 | Gas / Liquid Pycnometry |
Product Specifications
State
oxide
Matrix
weathered rhyodacite
Mineralisation
oxidised VMS
Availability
available
Certified Reference Values
| Analyte | Certified Value | Uncertainty (1SD) | 95% Confidence Low | 95% Confidence High | Method |
|---|---|---|---|---|---|
| Ce - Cerium (ppm) | 93 | - | - | - | 4-Acid Digestion |
| Dy - Dysprosium (ppm) | 3.70 | - | - | - | 4-Acid Digestion |
| Er - Erbium (ppm) | 1.13 | - | - | - | 4-Acid Digestion |
| Eu - Europium (ppm) | 1.54 | - | - | - | 4-Acid Digestion |
| Gd - Gadolinium (ppm) | 6.20 | - | - | - | 4-Acid Digestion |
| Ho - Holmium (ppm) | 0.50 | - | - | - | 4-Acid Digestion |
| La - Lanthanum (ppm) | 46.7 | - | - | - | 4-Acid Digestion |
| Lu - Lutetium (ppm) | 0.10 | - | - | - | 4-Acid Digestion |
| Nd - Neodymium (ppm) | 39.7 | - | - | - | 4-Acid Digestion |
| Pr - Praseodymium (ppm) | 10.7 | - | - | - | 4-Acid Digestion |
| Sm - Samarium (ppm) | 7.71 | - | - | - | 4-Acid Digestion |
| Tb - Terbium (ppm) | 0.77 | - | - | - | 4-Acid Digestion |
| Tm - Thulium (ppm) | 0.11 | - | - | - | 4-Acid Digestion |
| Y - Yttrium (ppm) | 15.8 | - | - | - | 4-Acid Digestion |
| Yb - Ytterbium (ppm) | 0.70 | - | - | - | 4-Acid Digestion |
| Ag - Silver (ppm) | 0.735 | - | - | - | Aqua Regia |
| As - Arsenic (ppm) | 20.4 | - | - | - | Aqua Regia |
| Mo - Molybdenum (ppm) | 3.85 | - | - | - | Aqua Regia |
| Ni - Nickel (ppm) | 4.53 | - | - | - | Aqua Regia |
| Pb - Lead (ppm) | 22.5 | - | - | - | Aqua Regia |
| Sb - Antimony (ppm) | 1.52 | - | - | - | Aqua Regia |
| Se - Selenium (ppm) | 4.54 | - | - | - | Aqua Regia |
| Te - Tellurium (ppm) | 0.11 | - | - | - | 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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