Specifications
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CRM State:
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Matrix:
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Mineralisation:
OREAS 240 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) | 5.51 | 0.139 | 5.47 | 5.56 | Pb Fire Assay |
Au, Gold (ppm) | 5.28 | 0.246 | 5.17 | 5.39 | Aqua Regia Digestion (sample weights 10-50g) |
Au, Gold (ppm) | 5.36 | 0.158 | 5.29 | 5.44 | Cyanide Leach |
Au, Gold (ppm) | 5.23 | 0.134 | 4.95 | 5.51 | PhotonAssay |
Ag, Silver (ppm) | 1.30 | 0.086 | 1.27 | 1.34 | Aqua Regia Digestion |
Al, Aluminium (wt.%) | 3.35 | 0.183 | 3.26 | 3.44 | Aqua Regia Digestion |
As, Arsenic (ppm) | 64 | 2.7 | 63 | 65 | Aqua Regia Digestion |
B, Boron (ppm) | 19.8 | 4.6 | 16.0 | 23.6 | Aqua Regia Digestion |
Ba, Barium (ppm) | 31.8 | 2.58 | 30.4 | 33.1 | Aqua Regia Digestion |
Be, Beryllium (ppm) | 0.27 | 0.03 | 0.25 | 0.29 | Aqua Regia Digestion |
Bi, Bismuth (ppm) | 0.050 | 0.001 | 0.050 | 0.050 | Aqua Regia Digestion |
Ca, Calcium (wt.%) | 2.82 | 0.327 | 2.67 | 2.97 | Aqua Regia Digestion |
Cd, Cadmium (ppm) | 0.61 | 0.021 | 0.60 | 0.62 | Aqua Regia Digestion |
Ce, Cerium (ppm) | 10.4 | 0.57 | 10.1 | 10.7 | Aqua Regia Digestion |
Co, Cobalt (ppm) | 28.5 | 1.81 | 27.7 | 29.3 | Aqua Regia Digestion |
Cr, Chromium (ppm) | 20.2 | 1.01 | 19.7 | 20.6 | Aqua Regia Digestion |
Cs, Caesium (ppm) | 0.70 | 0.054 | 0.68 | 0.73 | Aqua Regia Digestion |
Cu, Copper (ppm) | 167 | 6 | 165 | 170 | Aqua Regia Digestion |
Dy, Dysprosium (ppm) | 2.08 | 0.26 | 1.85 | 2.30 | Aqua Regia Digestion |
Er, Erbium (ppm) | 1.18 | 0.14 | 1.05 | 1.31 | Aqua Regia Digestion |
Eu, Europium (ppm) | 0.41 | 0.06 | 0.34 | 0.47 | Aqua Regia Digestion |
Fe, Iron (wt.%) | 5.30 | 0.232 | 5.19 | 5.41 | Aqua Regia Digestion |
Ga, Gallium (ppm) | 9.68 | 0.821 | 9.26 | 10.10 | Aqua Regia Digestion |
Gd, Gadolinium (ppm) | 1.91 | 0.23 | 1.71 | 2.10 | Aqua Regia Digestion |
Ge, Germanium (ppm) | 0.098 | 0.019 | 0.077 | 0.118 | Aqua Regia Digestion |
Hf, Hafnium (ppm) | 0.55 | 0.08 | 0.50 | 0.59 | Aqua Regia Digestion |
Ho, Holmium (ppm) | 0.39 | 0.030 | 0.36 | 0.42 | Aqua Regia Digestion |
In, Indium (ppm) | 0.038 | 0.005 | 0.035 | 0.040 | Aqua Regia Digestion |
K, Potassium (wt.%) | 0.147 | 0.012 | 0.142 | 0.153 | Aqua Regia Digestion |
La, Lanthanum (ppm) | 4.56 | 0.246 | 4.45 | 4.66 | Aqua Regia Digestion |
Li, Lithium (ppm) | 9.96 | 0.860 | 9.52 | 10.40 | Aqua Regia Digestion |
Lu, Lutetium (ppm) | 0.15 | 0.02 | 0.14 | 0.17 | Aqua Regia Digestion |
Mg, Magnesium (wt.%) | 1.54 | 0.047 | 1.52 | 1.56 | Aqua Regia Digestion |
Mn, Manganese (wt.%) | 0.072 | 0.005 | 0.070 | 0.074 | Aqua Regia Digestion |
Mo, Molybdenum (ppm) | 1.60 | 0.109 | 1.54 | 1.65 | Aqua Regia Digestion |
Na, Sodium (wt.%) | 0.269 | 0.016 | 0.262 | 0.276 | Aqua Regia Digestion |
Nd, Neodymium (ppm) | 6.00 | 0.67 | 5.35 | 6.64 | Aqua Regia Digestion |
Ni, Nickel (ppm) | 53 | 3.8 | 51 | 54 | Aqua Regia Digestion |
P, Phosphorus (wt.%) | 0.039 | 0.002 | 0.038 | 0.039 | Aqua Regia Digestion |
Pb, Lead (ppm) | 28.0 | 1.61 | 27.4 | 28.7 | Aqua Regia Digestion |
Pr, Praseodymium (ppm) | 1.36 | 0.129 | 1.25 | 1.47 | Aqua Regia Digestion |
Pt, Platinum (ppb) | 13.4 | 1.2 | 12.6 | 14.2 | Aqua Regia Digestion |
Rb, Rubidium (ppm) | 6.08 | 0.475 | 5.83 | 6.32 | Aqua Regia Digestion |
Re, Rhenium (ppm) | 0.002 | 0.001 | 0.002 | 0.002 | Aqua Regia Digestion |
S, Sulphur (wt.%) | 0.400 | 0.031 | 0.385 | 0.414 | Aqua Regia Digestion |
Sb, Antimony (ppm) | 0.77 | 0.25 | 0.64 | 0.90 | Aqua Regia Digestion |
Sc, Scandium (ppm) | 6.16 | 0.563 | 5.86 | 6.47 | Aqua Regia Digestion |
Sm, Samarium (ppm) | 1.56 | 0.105 | 1.44 | 1.68 | Aqua Regia Digestion |
Sn, Tin (ppm) | 0.65 | 0.09 | 0.60 | 0.70 | Aqua Regia Digestion |
Sr, Strontium (ppm) | 46.8 | 6.6 | 43.8 | 49.8 | Aqua Regia Digestion |
Ta, Tantalum (ppm) | < 0.050 | IND | IND | IND | Aqua Regia Digestion |
Tb, Terbium (ppm) | 0.31 | 0.03 | 0.29 | 0.34 | Aqua Regia Digestion |
Te, Tellurium (ppm) | 0.11 | 0.01 | 0.10 | 0.11 | Aqua Regia Digestion |
Th, Thorium (ppm) | 0.89 | 0.041 | 0.87 | 0.90 | Aqua Regia Digestion |
Ti, Titanium (wt.%) | 0.307 | 0.053 | 0.283 | 0.331 | Aqua Regia Digestion |
Tl, Thallium (ppm) | 0.11 | 0.010 | 0.11 | 0.12 | Aqua Regia Digestion |
Tm, Thulium (ppm) | 0.17 | 0.014 | 0.15 | 0.19 | Aqua Regia Digestion |
U, Uranium (ppm) | 0.22 | 0.010 | 0.22 | 0.23 | Aqua Regia Digestion |
V, Vanadium (ppm) | 130 | 16 | 122 | 138 | Aqua Regia Digestion |
W, Tungsten (ppm) | 25.9 | 3.9 | 24.1 | 27.6 | Aqua Regia Digestion |
Y, Yttrium (ppm) | 11.4 | 0.99 | 10.9 | 11.9 | Aqua Regia Digestion |
Yb, Ytterbium (ppm) | 1.11 | 0.16 | 0.99 | 1.24 | Aqua Regia Digestion |
Zn, Zinc (ppm) | 129 | 5 | 127 | 131 | Aqua Regia Digestion |
Zr, Zirconium (ppm) | 18.5 | 1.9 | 17.5 | 19.5 | Aqua Regia Digestion |
Ag, Silver (ppm) | 1.35 | 0.077 | 1.32 | 1.38 | 4-Acid Digestion |
Al, Aluminium (wt.%) | 6.84 | 0.169 | 6.78 | 6.91 | 4-Acid Digestion |
As, Arsenic (ppm) | 65 | 4.6 | 63 | 67 | 4-Acid Digestion |
Ba, Barium (ppm) | 129 | 4 | 128 | 131 | 4-Acid Digestion |
Be, Beryllium (ppm) | 0.43 | 0.038 | 0.41 | 0.45 | 4-Acid Digestion |
Bi, Bismuth (ppm) | 0.053 | 0.007 | 0.049 | 0.056 | 4-Acid Digestion |
Ca, Calcium (wt.%) | 6.85 | 0.284 | 6.73 | 6.97 | 4-Acid Digestion |
Cd, Cadmium (ppm) | 0.63 | 0.032 | 0.62 | 0.65 | 4-Acid Digestion |
Ce, Cerium (ppm) | 13.3 | 0.89 | 12.9 | 13.7 | 4-Acid Digestion |
Co, Cobalt (ppm) | 39.8 | 2.60 | 38.7 | 41.0 | 4-Acid Digestion |
Cr, Chromium (ppm) | 103 | 11 | 98 | 107 | 4-Acid Digestion |
Cs, Caesium (ppm) | 0.97 | 0.071 | 0.94 | 1.00 | 4-Acid Digestion |
Cu, Copper (ppm) | 168 | 5 | 167 | 170 | 4-Acid Digestion |
Dy, Dysprosium (ppm) | 3.51 | 0.174 | 3.41 | 3.60 | 4-Acid Digestion |
Er, Erbium (ppm) | 2.17 | 0.111 | 2.11 | 2.23 | 4-Acid Digestion |
Eu, Europium (ppm) | 0.88 | 0.045 | 0.85 | 0.92 | 4-Acid Digestion |
Fe, Iron (wt.%) | 7.31 | 0.243 | 7.21 | 7.41 | 4-Acid Digestion |
Ga, Gallium (ppm) | 15.2 | 0.51 | 15.0 | 15.4 | 4-Acid Digestion |
Gd, Gadolinium (ppm) | 3.14 | 0.240 | 3.00 | 3.28 | 4-Acid Digestion |
Hf, Hafnium (ppm) | 1.70 | 0.096 | 1.66 | 1.74 | 4-Acid Digestion |
Ho, Holmium (ppm) | 0.74 | 0.052 | 0.70 | 0.78 | 4-Acid Digestion |
In, Indium (ppm) | 0.075 | 0.005 | 0.073 | 0.076 | 4-Acid Digestion |
K, Potassium (wt.%) | 0.453 | 0.015 | 0.446 | 0.459 | 4-Acid Digestion |
La, Lanthanum (ppm) | 5.72 | 0.385 | 5.55 | 5.89 | 4-Acid Digestion |
Li, Lithium (ppm) | 11.4 | 0.92 | 11.0 | 11.8 | 4-Acid Digestion |
Lu, Lutetium (ppm) | 0.31 | 0.020 | 0.30 | 0.32 | 4-Acid Digestion |
Mg, Magnesium (wt.%) | 3.44 | 0.141 | 3.39 | 3.50 | 4-Acid Digestion |
Mn, Manganese (wt.%) | 0.125 | 0.004 | 0.124 | 0.127 | 4-Acid Digestion |
Mo, Molybdenum (ppm) | 1.70 | 0.128 | 1.65 | 1.74 | 4-Acid Digestion |
Na, Sodium (wt.%) | 1.65 | 0.050 | 1.63 | 1.67 | 4-Acid Digestion |
Nb, Niobium (ppm) | 3.37 | 0.192 | 3.29 | 3.45 | 4-Acid Digestion |
Nd, Neodymium (ppm) | 8.32 | 0.363 | 8.12 | 8.51 | 4-Acid Digestion |
Ni, Nickel (ppm) | 79 | 4.0 | 77 | 80 | 4-Acid Digestion |
P, Phosphorus (wt.%) | 0.040 | 0.002 | 0.040 | 0.041 | 4-Acid Digestion |
Pb, Lead (ppm) | 28.5 | 1.59 | 27.9 | 29.2 | 4-Acid Digestion |
Pr, Praseodymium (ppm) | 1.77 | 0.080 | 1.72 | 1.81 | 4-Acid Digestion |
Rb, Rubidium (ppm) | 14.0 | 0.70 | 13.7 | 14.3 | 4-Acid Digestion |
S, Sulphur (wt.%) | 0.399 | 0.017 | 0.391 | 0.407 | 4-Acid Digestion |
Sb, Antimony (ppm) | 1.48 | 0.087 | 1.45 | 1.52 | 4-Acid Digestion |
Sc, Scandium (ppm) | 37.9 | 1.35 | 37.4 | 38.4 | 4-Acid Digestion |
Sm, Samarium (ppm) | 2.43 | 0.134 | 2.36 | 2.50 | 4-Acid Digestion |
Sn, Tin (ppm) | 1.08 | 0.13 | 1.02 | 1.13 | 4-Acid Digestion |
Sr, Strontium (ppm) | 213 | 10 | 209 | 217 | 4-Acid Digestion |
Ta, Tantalum (ppm) | 0.23 | 0.019 | 0.22 | 0.24 | 4-Acid Digestion |
Tb, Terbium (ppm) | 0.53 | 0.028 | 0.52 | 0.55 | 4-Acid Digestion |
Te, Tellurium (ppm) | 0.11 | 0.01 | 0.10 | 0.12 | 4-Acid Digestion |
Th, Thorium (ppm) | 1.13 | 0.074 | 1.10 | 1.16 | 4-Acid Digestion |
Ti, Titanium (wt.%) | 0.572 | 0.022 | 0.563 | 0.581 | 4-Acid Digestion |
Tl, Thallium (ppm) | 0.23 | 0.010 | 0.22 | 0.23 | 4-Acid Digestion |
Tm, Thulium (ppm) | 0.31 | 0.016 | 0.30 | 0.32 | 4-Acid Digestion |
U, Uranium (ppm) | 0.33 | 0.04 | 0.32 | 0.34 | 4-Acid Digestion |
V, Vanadium (ppm) | 251 | 8 | 248 | 254 | 4-Acid Digestion |
W, Tungsten (ppm) | 36.9 | 2.75 | 35.7 | 38.1 | 4-Acid Digestion |
Y, Yttrium (ppm) | 19.2 | 0.98 | 18.9 | 19.6 | 4-Acid Digestion |
Yb, Ytterbium (ppm) | 2.10 | 0.139 | 2.03 | 2.18 | 4-Acid Digestion |
Zn, Zinc (ppm) | 142 | 8 | 139 | 145 | 4-Acid Digestion |
Zr, Zirconium (ppm) | 56 | 4.1 | 55 | 58 | 4-Acid Digestion |
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