Specifications
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CRM State:
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Matrix:
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Mineralisation:
OREAS 242 was prepared from a blend of gold-bearing 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 shown below.
The following methods were employed:
Analyte | Certified Value | 1SD | 95% Confidence Limits Low | 95% Confidence Limits High | Method |
---|---|---|---|---|---|
Au, Gold (ppm) | 8.67 | 0.215 | 8.60 | 8.74 | Pb Fire Assay |
Au, Gold (ppm) | 8.33 | 0.243 | 8.22 | 8.44 | Aqua Regia Digestion (sample weights 10-50g) |
Au, Gold (ppm) | 8.48 | 0.212 | 8.38 | 8.58 | Cyanide Leach |
Au, Gold (ppm) | 8.26 | 0.276 | 7.66 | 8.85 | PhotonAssay |
Ag, Silver (ppm) | 2.05 | 0.144 | 1.99 | 2.11 | Aqua Regia Digestion |
Al, Aluminium (wt.%) | 3.20 | 0.142 | 3.14 | 3.27 | Aqua Regia Digestion |
As, Arsenic (ppm) | 66 | 2.6 | 65 | 67 | Aqua Regia Digestion |
B, Boron (ppm) | 52 | 7 | 47 | 57 | Aqua Regia Digestion |
Ba, Barium (ppm) | 35.1 | 2.56 | 33.7 | 36.5 | Aqua Regia Digestion |
Be, Beryllium (ppm) | 0.27 | 0.020 | 0.27 | 0.28 | Aqua Regia Digestion |
Bi, Bismuth (ppm) | 0.055 | 0.005 | 0.052 | 0.057 | Aqua Regia Digestion |
Ca, Calcium (wt.%) | 2.66 | 0.262 | 2.54 | 2.78 | Aqua Regia Digestion |
Cd, Cadmium (ppm) | 0.65 | 0.025 | 0.64 | 0.66 | Aqua Regia Digestion |
Ce, Cerium (ppm) | 10.9 | 0.64 | 10.6 | 11.2 | Aqua Regia Digestion |
Co, Cobalt (ppm) | 28.9 | 1.83 | 28.1 | 29.6 | Aqua Regia Digestion |
Cr, Chromium (ppm) | 26.1 | 1.17 | 25.5 | 26.7 | Aqua Regia Digestion |
Cs, Caesium (ppm) | 0.78 | 0.040 | 0.76 | 0.80 | Aqua Regia Digestion |
Cu, Copper (ppm) | 171 | 6 | 169 | 173 | Aqua Regia Digestion |
Dy, Dysprosium (ppm) | 2.16 | 0.22 | 1.95 | 2.37 | Aqua Regia Digestion |
Er, Erbium (ppm) | 1.33 | 0.20 | 1.16 | 1.51 | Aqua Regia Digestion |
Eu, Europium (ppm) | 0.47 | 0.07 | 0.39 | 0.55 | Aqua Regia Digestion |
Fe, Iron (wt.%) | 5.54 | 0.216 | 5.44 | 5.63 | Aqua Regia Digestion |
Ga, Gallium (ppm) | 10.3 | 0.59 | 10.1 | 10.6 | Aqua Regia Digestion |
Gd, Gadolinium (ppm) | 2.08 | 0.28 | 1.83 | 2.34 | Aqua Regia Digestion |
Ge, Germanium (ppm) | 0.11 | 0.02 | 0.09 | 0.14 | Aqua Regia Digestion |
Hf, Hafnium (ppm) | 0.58 | 0.08 | 0.53 | 0.62 | Aqua Regia Digestion |
Ho, Holmium (ppm) | 0.44 | 0.05 | 0.39 | 0.48 | Aqua Regia Digestion |
In, Indium (ppm) | 0.039 | 0.002 | 0.038 | 0.040 | Aqua Regia Digestion |
K, Potassium (wt.%) | 0.160 | 0.013 | 0.155 | 0.166 | Aqua Regia Digestion |
La, Lanthanum (ppm) | 4.79 | 0.227 | 4.69 | 4.90 | Aqua Regia Digestion |
Li, Lithium (ppm) | 9.80 | 0.766 | 9.44 | 10.16 | Aqua Regia Digestion |
Lu, Lutetium (ppm) | 0.16 | 0.02 | 0.14 | 0.18 | Aqua Regia Digestion |
Mg, Magnesium (wt.%) | 1.59 | 0.046 | 1.57 | 1.61 | Aqua Regia Digestion |
Mn, Manganese (wt.%) | 0.070 | 0.004 | 0.068 | 0.072 | Aqua Regia Digestion |
Mo, Molybdenum (ppm) | 1.54 | 0.079 | 1.51 | 1.57 | Aqua Regia Digestion |
Na, Sodium (wt.%) | 0.257 | 0.014 | 0.251 | 0.263 | Aqua Regia Digestion |
Nd, Neodymium (ppm) | 6.39 | 0.71 | 5.77 | 7.01 | Aqua Regia Digestion |
Ni, Nickel (ppm) | 48.9 | 2.80 | 47.7 | 50.0 | Aqua Regia Digestion |
P, Phosphorus (wt.%) | 0.041 | 0.002 | 0.040 | 0.042 | Aqua Regia Digestion |
Pb, Lead (ppm) | 30.5 | 1.23 | 30.0 | 31.0 | Aqua Regia Digestion |
Pr, Praseodymium (ppm) | 1.41 | 0.136 | 1.26 | 1.56 | Aqua Regia Digestion |
Pt, Platinum (ppb) | 10.3 | 0.8 | 9.9 | 10.8 | Aqua Regia Digestion |
Rb, Rubidium (ppm) | 6.79 | 0.617 | 6.49 | 7.10 | Aqua Regia Digestion |
Re, Rhenium (ppm) | 0.002 | 0.000 | 0.002 | 0.002 | Aqua Regia Digestion |
S, Sulphur (wt.%) | 0.434 | 0.029 | 0.420 | 0.448 | Aqua Regia Digestion |
Sb, Antimony (ppm) | 0.94 | 0.28 | 0.79 | 1.08 | Aqua Regia Digestion |
Sc, Scandium (ppm) | 6.29 | 0.466 | 6.03 | 6.55 | Aqua Regia Digestion |
Sm, Samarium (ppm) | 1.64 | 0.158 | 1.50 | 1.79 | Aqua Regia Digestion |
Sn, Tin (ppm) | 0.68 | 0.10 | 0.63 | 0.74 | Aqua Regia Digestion |
Sr, Strontium (ppm) | 38.2 | 5.2 | 36.0 | 40.5 | Aqua Regia Digestion |
Ta, Tantalum (ppm) | < 0.050 | IND | IND | IND | Aqua Regia Digestion |
Tb, Terbium (ppm) | 0.35 | 0.034 | 0.32 | 0.37 | Aqua Regia Digestion |
Te, Tellurium (ppm) | 0.11 | 0.02 | 0.10 | 0.12 | Aqua Regia Digestion |
Th, Thorium (ppm) | 0.98 | 0.088 | 0.94 | 1.03 | Aqua Regia Digestion |
Ti, Titanium (wt.%) | 0.330 | 0.054 | 0.305 | 0.355 | Aqua Regia Digestion |
Tl, Thallium (ppm) | 0.14 | 0.011 | 0.14 | 0.15 | Aqua Regia Digestion |
Tm, Thulium (ppm) | 0.18 | 0.02 | 0.16 | 0.20 | Aqua Regia Digestion |
U, Uranium (ppm) | 0.24 | 0.012 | 0.24 | 0.25 | Aqua Regia Digestion |
V, Vanadium (ppm) | 142 | 14 | 135 | 150 | Aqua Regia Digestion |
W, Tungsten (ppm) | 24.6 | 3.2 | 23.1 | 26.1 | Aqua Regia Digestion |
Y, Yttrium (ppm) | 12.1 | 0.83 | 11.6 | 12.5 | Aqua Regia Digestion |
Yb, Ytterbium (ppm) | 1.19 | 0.13 | 1.08 | 1.30 | Aqua Regia Digestion |
Zn, Zinc (ppm) | 133 | 5 | 131 | 135 | Aqua Regia Digestion |
Zr, Zirconium (ppm) | 18.8 | 2.0 | 17.8 | 19.9 | Aqua Regia Digestion |
Ag, Silver (ppm) | 2.06 | 0.128 | 2.01 | 2.11 | 4-Acid Digestion |
Al, Aluminium (wt.%) | 6.69 | 0.252 | 6.59 | 6.79 | 4-Acid Digestion |
As, Arsenic (ppm) | 68 | 4.4 | 66 | 70 | 4-Acid Digestion |
Ba, Barium (ppm) | 201 | 6 | 199 | 203 | 4-Acid Digestion |
Be, Beryllium (ppm) | 0.46 | 0.027 | 0.44 | 0.48 | 4-Acid Digestion |
Bi, Bismuth (ppm) | 0.055 | 0.009 | 0.051 | 0.060 | 4-Acid Digestion |
Ca, Calcium (wt.%) | 6.20 | 0.269 | 6.09 | 6.31 | 4-Acid Digestion |
Cd, Cadmium (ppm) | 0.65 | 0.033 | 0.64 | 0.67 | 4-Acid Digestion |
Ce, Cerium (ppm) | 13.7 | 0.80 | 13.3 | 14.1 | 4-Acid Digestion |
Co, Cobalt (ppm) | 39.5 | 2.51 | 38.4 | 40.6 | 4-Acid Digestion |
Cr, Chromium (ppm) | 92 | 9 | 88 | 96 | 4-Acid Digestion |
Cs, Caesium (ppm) | 1.03 | 0.077 | 0.99 | 1.07 | 4-Acid Digestion |
Cu, Copper (ppm) | 174 | 4 | 172 | 175 | 4-Acid Digestion |
Dy, Dysprosium (ppm) | 3.64 | 0.224 | 3.50 | 3.78 | 4-Acid Digestion |
Er, Erbium (ppm) | 2.22 | 0.118 | 2.16 | 2.29 | 4-Acid Digestion |
Eu, Europium (ppm) | 0.88 | 0.070 | 0.83 | 0.93 | 4-Acid Digestion |
Fe, Iron (wt.%) | 7.58 | 0.241 | 7.48 | 7.67 | 4-Acid Digestion |
Ga, Gallium (ppm) | 15.1 | 0.87 | 14.8 | 15.5 | 4-Acid Digestion |
Gd, Gadolinium (ppm) | 3.25 | 0.265 | 3.08 | 3.41 | 4-Acid Digestion |
Hf, Hafnium (ppm) | 1.78 | 0.132 | 1.73 | 1.82 | 4-Acid Digestion |
Ho, Holmium (ppm) | 0.76 | 0.042 | 0.73 | 0.79 | 4-Acid Digestion |
In, Indium (ppm) | 0.079 | 0.007 | 0.075 | 0.082 | 4-Acid Digestion |
K, Potassium (wt.%) | 0.547 | 0.024 | 0.537 | 0.557 | 4-Acid Digestion |
La, Lanthanum (ppm) | 5.92 | 0.382 | 5.74 | 6.10 | 4-Acid Digestion |
Li, Lithium (ppm) | 11.5 | 0.80 | 11.1 | 12.0 | 4-Acid Digestion |
Lu, Lutetium (ppm) | 0.31 | 0.014 | 0.30 | 0.32 | 4-Acid Digestion |
Mg, Magnesium (wt.%) | 3.32 | 0.114 | 3.27 | 3.36 | 4-Acid Digestion |
Mn, Manganese (wt.%) | 0.127 | 0.004 | 0.126 | 0.129 | 4-Acid Digestion |
Mo, Molybdenum (ppm) | 1.61 | 0.107 | 1.56 | 1.65 | 4-Acid Digestion |
Na, Sodium (wt.%) | 1.89 | 0.059 | 1.86 | 1.91 | 4-Acid Digestion |
Nb, Niobium (ppm) | 3.58 | 0.178 | 3.50 | 3.66 | 4-Acid Digestion |
Nd, Neodymium (ppm) | 8.68 | 0.439 | 8.42 | 8.94 | 4-Acid Digestion |
Ni, Nickel (ppm) | 70 | 3.3 | 69 | 72 | 4-Acid Digestion |
P, Phosphorus (wt.%) | 0.043 | 0.002 | 0.042 | 0.044 | 4-Acid Digestion |
Pb, Lead (ppm) | 30.8 | 1.75 | 30.1 | 31.5 | 4-Acid Digestion |
Pr, Praseodymium (ppm) | 1.86 | 0.080 | 1.82 | 1.91 | 4-Acid Digestion |
Rb, Rubidium (ppm) | 15.5 | 0.84 | 15.2 | 15.9 | 4-Acid Digestion |
S, Sulphur (wt.%) | 0.444 | 0.033 | 0.430 | 0.459 | 4-Acid Digestion |
Sb, Antimony (ppm) | 1.78 | 0.088 | 1.75 | 1.82 | 4-Acid Digestion |
Sc, Scandium (ppm) | 37.3 | 1.46 | 36.7 | 37.9 | 4-Acid Digestion |
Sm, Samarium (ppm) | 2.51 | 0.136 | 2.42 | 2.59 | 4-Acid Digestion |
Sn, Tin (ppm) | 1.15 | 0.16 | 1.09 | 1.21 | 4-Acid Digestion |
Sr, Strontium (ppm) | 147 | 7 | 144 | 149 | 4-Acid Digestion |
Ta, Tantalum (ppm) | 0.25 | 0.019 | 0.24 | 0.26 | 4-Acid Digestion |
Tb, Terbium (ppm) | 0.55 | 0.040 | 0.52 | 0.58 | 4-Acid Digestion |
Te, Tellurium (ppm) | 0.11 | 0.03 | 0.10 | 0.12 | 4-Acid Digestion |
Th, Thorium (ppm) | 1.19 | 0.082 | 1.16 | 1.22 | 4-Acid Digestion |
Ti, Titanium (wt.%) | 0.602 | 0.020 | 0.594 | 0.611 | 4-Acid Digestion |
Tl, Thallium (ppm) | 0.26 | 0.014 | 0.26 | 0.27 | 4-Acid Digestion |
Tm, Thulium (ppm) | 0.32 | 0.022 | 0.30 | 0.34 | 4-Acid Digestion |
U, Uranium (ppm) | 0.36 | 0.020 | 0.35 | 0.37 | 4-Acid Digestion |
V, Vanadium (ppm) | 262 | 9 | 259 | 266 | 4-Acid Digestion |
W, Tungsten (ppm) | 35.0 | 2.73 | 33.8 | 36.3 | 4-Acid Digestion |
Y, Yttrium (ppm) | 20.1 | 0.82 | 19.8 | 20.5 | 4-Acid Digestion |
Yb, Ytterbium (ppm) | 2.18 | 0.137 | 2.10 | 2.25 | 4-Acid Digestion |
Zn, Zinc (ppm) | 147 | 8 | 144 | 150 | 4-Acid Digestion |
Zr, Zirconium (ppm) | 58 | 5.1 | 56 | 60 | 4-Acid Digestion |
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