Specifications
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CRM State:
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Matrix:
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Mineralisation:
OREAS 49 is sourced from glacial till from the Rainy River District, with minor additions of ore materials (BM, PGE, REE, and Li) to achieve anomalous concentration levels. A pure glacial till is also available (see OREAS 48). This till, predominantly of Late Wisconsinan age, is typically classified as an unsorted diamicton. Its composition reflects both the local Precambrian Shield bedrock including granitoid rocks, metavolcanics, and metasedimentary rocks, and Paleozoic sedimentary formations. The material contains a mix of felsic to mafic lithologies with mineral constituents such as quartz, feldspar, amphibole, and biotite, along with occasional sulphide minerals. The till’s combined local and long-range glacial provenance makes it a reliable matrix for geochemical exploration, particularly for QAQC applications targeting anomalous concentrations of gold, PGE, REE, lithium, and base metals.
Twenty commercial analytical laboratories participated in the program to certify the elements reported below:
To confirm homogeneity, the repeatability of gold was evaluated using high precision INAA.
Analyte | Certified Value | 1SD | Expanded Uncertainty Low | Expanded Uncertainty High | Method |
---|---|---|---|---|---|
Au, Gold (ppb) | 61.3 | 3.57 | 59.4 | 63.1 | Pb Fire Assay |
Au, Gold (ppb) | 61.6 | 2.12 | 60.3 | 62.8 | Aqua Regia Digestion (sample weights 10-50g) |
Ag, Silver (ppm) | < 5.00 | IND | IND | IND | Borate / Peroxide Fusion ICP |
Al, Aluminium (wt.%) | 7.95 | 0.164 | 7.71 | 8.20 | Borate / Peroxide Fusion ICP |
As, Arsenic (ppm) | 18.2 | 3.2 | 15.5 | 20.8 | Borate / Peroxide Fusion ICP |
Ba, Barium (ppm) | 431 | 17 | 414 | 449 | Borate / Peroxide Fusion ICP |
Be, Beryllium (ppm) | 0.89 | 0.14 | 0.61 | 1.17 | Borate / Peroxide Fusion ICP |
Bi, Bismuth (ppm) | 0.34 | 0.07 | 0.23 | 0.45 | Borate / Peroxide Fusion ICP |
Ca, Calcium (wt.%) | 3.80 | 0.121 | 3.65 | 3.94 | Borate / Peroxide Fusion ICP |
Ce, Cerium (ppm) | 66 | 5.5 | 62 | 70 | Borate / Peroxide Fusion ICP |
Co, Cobalt (ppm) | 67 | 3.4 | 63 | 70 | Borate / Peroxide Fusion ICP |
Cr, Chromium (ppm) | 301 | 23 | 279 | 323 | Borate / Peroxide Fusion ICP |
Cs, Caesium (ppm) | 3.12 | 0.34 | 2.76 | 3.48 | Borate / Peroxide Fusion ICP |
Cu, Copper (ppm) | 167 | 7 | 158 | 175 | Borate / Peroxide Fusion ICP |
Dy, Dysprosium (ppm) | 2.14 | 0.159 | 1.96 | 2.32 | Borate / Peroxide Fusion ICP |
Er, Erbium (ppm) | 1.17 | 0.070 | 1.04 | 1.30 | Borate / Peroxide Fusion ICP |
Eu, Europium (ppm) | 1.09 | 0.072 | 0.99 | 1.18 | Borate / Peroxide Fusion ICP |
Fe, Iron (wt.%) | 4.43 | 0.105 | 4.30 | 4.55 | Borate / Peroxide Fusion ICP |
Ga, Gallium (ppm) | 20.7 | 1.22 | 19.3 | 22.1 | Borate / Peroxide Fusion ICP |
Gd, Gadolinium (ppm) | 2.95 | 0.203 | 2.64 | 3.27 | Borate / Peroxide Fusion ICP |
Ge, Germanium (ppm) | 1.13 | 0.17 | 0.91 | 1.35 | Borate / Peroxide Fusion ICP |
Ho, Holmium (ppm) | 0.40 | 0.039 | 0.35 | 0.46 | Borate / Peroxide Fusion ICP |
In, Indium (ppm) | < 0.30 | IND | IND | IND | Borate / Peroxide Fusion ICP |
K, Potassium (wt.%) | 1.16 | 0.049 | 1.12 | 1.20 | Borate / Peroxide Fusion ICP |
La, Lanthanum (ppm) | 36.5 | 2.98 | 34.0 | 38.9 | Borate / Peroxide Fusion ICP |
Li, Lithium (ppm) | 50 | 3.0 | 47 | 54 | Borate / Peroxide Fusion ICP |
Lu, Lutetium (ppm) | 0.16 | 0.02 | 0.13 | 0.19 | Borate / Peroxide Fusion ICP |
Mg, Magnesium (wt.%) | 1.87 | 0.033 | 1.83 | 1.91 | Borate / Peroxide Fusion ICP |
Mn, Manganese (wt.%) | 0.073 | 0.003 | 0.070 | 0.075 | Borate / Peroxide Fusion ICP |
Mo, Molybdenum (ppm) | 15.2 | 1.8 | 12.9 | 17.5 | Borate / Peroxide Fusion ICP |
Nb, Niobium (ppm) | 7.02 | 0.592 | 5.94 | 8.10 | Borate / Peroxide Fusion ICP |
Nd, Neodymium (ppm) | 25.5 | 2.04 | 23.7 | 27.3 | Borate / Peroxide Fusion ICP |
Ni, Nickel (ppm) | 119 | 12 | 109 | 129 | Borate / Peroxide Fusion ICP |
P, Phosphorus (wt.%) | 0.056 | 0.004 | 0.051 | 0.061 | Borate / Peroxide Fusion ICP |
Pb, Lead (ppm) | 262 | 15 | 245 | 278 | Borate / Peroxide Fusion ICP |
Pr, Praseodymium (ppm) | 7.16 | 0.425 | 6.75 | 7.58 | Borate / Peroxide Fusion ICP |
Rb, Rubidium (ppm) | 59 | 3.1 | 56 | 62 | Borate / Peroxide Fusion ICP |
Re, Rhenium (ppm) | < 0.010 | IND | IND | IND | Borate / Peroxide Fusion ICP |
S, Sulphur (wt.%) | 0.110 | 0.005 | 0.100 | 0.120 | Borate / Peroxide Fusion ICP |
Sb, Antimony (ppm) | 0.57 | 0.09 | 0.44 | 0.71 | Borate / Peroxide Fusion ICP |
Sc, Scandium (ppm) | 15.0 | 0.79 | 13.8 | 16.1 | Borate / Peroxide Fusion ICP |
Si, Silicon (wt.%) | 29.44 | 1.006 | 28.16 | 30.72 | Borate / Peroxide Fusion ICP |
Sm, Samarium (ppm) | 3.96 | 0.302 | 3.66 | 4.25 | Borate / Peroxide Fusion ICP |
Sn, Tin (ppm) | 17.1 | 2.1 | 15.1 | 19.1 | Borate / Peroxide Fusion ICP |
Sr, Strontium (ppm) | 464 | 22 | 447 | 481 | Borate / Peroxide Fusion ICP |
Ta, Tantalum (ppm) | 1.15 | 0.19 | 0.92 | 1.39 | Borate / Peroxide Fusion ICP |
Tb, Terbium (ppm) | 0.39 | 0.020 | 0.35 | 0.42 | Borate / Peroxide Fusion ICP |
Te, Tellurium (ppm) | < 0.50 | IND | IND | IND | Borate / Peroxide Fusion ICP |
Th, Thorium (ppm) | 3.08 | 0.137 | 2.83 | 3.33 | Borate / Peroxide Fusion ICP |
Ti, Titanium (wt.%) | 0.325 | 0.008 | 0.314 | 0.336 | Borate / Peroxide Fusion ICP |
Tl, Thallium (ppm) | 0.38 | 0.034 | 0.31 | 0.45 | Borate / Peroxide Fusion ICP |
Tm, Thulium (ppm) | 0.16 | 0.014 | 0.13 | 0.18 | Borate / Peroxide Fusion ICP |
U, Uranium (ppm) | 0.53 | 0.06 | 0.45 | 0.61 | Borate / Peroxide Fusion ICP |
V, Vanadium (ppm) | 115 | 7 | 109 | 120 | Borate / Peroxide Fusion ICP |
W, Tungsten (ppm) | 0.93 | 0.21 | 0.60 | 1.27 | Borate / Peroxide Fusion ICP |
Y, Yttrium (ppm) | 11.0 | 1.2 | 10.0 | 11.9 | Borate / Peroxide Fusion ICP |
Yb, Ytterbium (ppm) | 1.03 | 0.100 | 0.88 | 1.18 | Borate / Peroxide Fusion ICP |
Zn, Zinc (ppm) | 257 | 18 | 243 | 272 | Borate / Peroxide Fusion ICP |
Zr, Zirconium (ppm) | 95 | 8.3 | 84 | 106 | Borate / Peroxide Fusion ICP |
Ag, Silver (ppm) | 0.422 | 0.036 | 0.391 | 0.452 | 4-Acid Digestion |
Al, Aluminium (wt.%) | 7.71 | 0.274 | 7.41 | 8.01 | 4-Acid Digestion |
As, Arsenic (ppm) | 16.2 | 0.63 | 15.3 | 17.1 | 4-Acid Digestion |
Ba, Barium (ppm) | 419 | 19 | 403 | 435 | 4-Acid Digestion |
Be, Beryllium (ppm) | 0.79 | 0.040 | 0.75 | 0.83 | 4-Acid Digestion |
Bi, Bismuth (ppm) | 0.31 | 0.019 | 0.29 | 0.33 | 4-Acid Digestion |
Ca, Calcium (wt.%) | 3.64 | 0.121 | 3.54 | 3.74 | 4-Acid Digestion |
Cd, Cadmium (ppm) | 0.55 | 0.041 | 0.51 | 0.59 | 4-Acid Digestion |
Ce, Cerium (ppm) | 64 | 3.0 | 60 | 68 | 4-Acid Digestion |
Co, Cobalt (ppm) | 66 | 1.6 | 63 | 68 | 4-Acid Digestion |
Cr, Chromium (ppm) | 209 | 42 | 184 | 234 | 4-Acid Digestion |
Cs, Caesium (ppm) | 2.97 | 0.130 | 2.82 | 3.13 | 4-Acid Digestion |
Cu, Copper (ppm) | 165 | 5 | 161 | 169 | 4-Acid Digestion |
Dy, Dysprosium (ppm) | 2.08 | 0.142 | 1.96 | 2.20 | 4-Acid Digestion |
Er, Erbium (ppm) | 1.09 | 0.072 | 1.02 | 1.16 | 4-Acid Digestion |
Eu, Europium (ppm) | 1.05 | 0.054 | 0.98 | 1.12 | 4-Acid Digestion |
Fe, Iron (wt.%) | 4.32 | 0.107 | 4.21 | 4.43 | 4-Acid Digestion |
Ga, Gallium (ppm) | 19.5 | 0.85 | 18.7 | 20.3 | 4-Acid Digestion |
Gd, Gadolinium (ppm) | 2.87 | 0.277 | 2.66 | 3.09 | 4-Acid Digestion |
Hf, Hafnium (ppm) | 1.54 | 0.082 | 1.42 | 1.66 | 4-Acid Digestion |
Ho, Holmium (ppm) | 0.39 | 0.022 | 0.36 | 0.42 | 4-Acid Digestion |
In, Indium (ppm) | 0.061 | 0.005 | 0.053 | 0.069 | 4-Acid Digestion |
K, Potassium (wt.%) | 1.13 | 0.022 | 1.09 | 1.16 | 4-Acid Digestion |
La, Lanthanum (ppm) | 32.8 | 1.92 | 31.0 | 34.7 | 4-Acid Digestion |
Li, Lithium (ppm) | 49.8 | 2.73 | 47.9 | 51.6 | 4-Acid Digestion |
Lu, Lutetium (ppm) | 0.15 | 0.011 | 0.13 | 0.16 | 4-Acid Digestion |
Mg, Magnesium (wt.%) | 1.81 | 0.042 | 1.76 | 1.86 | 4-Acid Digestion |
Mn, Manganese (wt.%) | 0.070 | 0.002 | 0.068 | 0.073 | 4-Acid Digestion |
Mo, Molybdenum (ppm) | 14.4 | 0.64 | 13.8 | 15.0 | 4-Acid Digestion |
Na, Sodium (wt.%) | 2.98 | 0.083 | 2.89 | 3.06 | 4-Acid Digestion |
Nb, Niobium (ppm) | 6.69 | 0.320 | 6.26 | 7.11 | 4-Acid Digestion |
Nd, Neodymium (ppm) | 24.9 | 1.13 | 23.1 | 26.6 | 4-Acid Digestion |
Ni, Nickel (ppm) | 114 | 4 | 109 | 118 | 4-Acid Digestion |
P, Phosphorus (wt.%) | 0.056 | 0.003 | 0.054 | 0.058 | 4-Acid Digestion |
Pb, Lead (ppm) | 258 | 10 | 249 | 266 | 4-Acid Digestion |
Pr, Praseodymium (ppm) | 6.79 | 0.456 | 6.35 | 7.24 | 4-Acid Digestion |
Rb, Rubidium (ppm) | 55 | 4.9 | 51 | 60 | 4-Acid Digestion |
S, Sulphur (wt.%) | 0.109 | 0.003 | 0.104 | 0.113 | 4-Acid Digestion |
Sb, Antimony (ppm) | 0.48 | 0.031 | 0.45 | 0.52 | 4-Acid Digestion |
Sc, Scandium (ppm) | 14.9 | 0.47 | 14.2 | 15.6 | 4-Acid Digestion |
Sm, Samarium (ppm) | 3.83 | 0.310 | 3.55 | 4.12 | 4-Acid Digestion |
Sn, Tin (ppm) | 1.90 | 0.35 | 1.70 | 2.11 | 4-Acid Digestion |
Sr, Strontium (ppm) | 459 | 20 | 443 | 475 | 4-Acid Digestion |
Ta, Tantalum (ppm) | 0.97 | 0.055 | 0.90 | 1.03 | 4-Acid Digestion |
Tb, Terbium (ppm) | 0.37 | 0.016 | 0.35 | 0.39 | 4-Acid Digestion |
Th, Thorium (ppm) | 3.01 | 0.236 | 2.78 | 3.24 | 4-Acid Digestion |
Ti, Titanium (wt.%) | 0.316 | 0.010 | 0.306 | 0.325 | 4-Acid Digestion |
Tl, Thallium (ppm) | 0.38 | 0.028 | 0.35 | 0.40 | 4-Acid Digestion |
Tm, Thulium (ppm) | 0.15 | 0.008 | 0.14 | 0.16 | 4-Acid Digestion |
U, Uranium (ppm) | 0.50 | 0.034 | 0.47 | 0.53 | 4-Acid Digestion |
V, Vanadium (ppm) | 111 | 3 | 107 | 115 | 4-Acid Digestion |
W, Tungsten (ppm) | 0.69 | 0.11 | 0.58 | 0.81 | 4-Acid Digestion |
Y, Yttrium (ppm) | 10.3 | 0.62 | 9.8 | 10.9 | 4-Acid Digestion |
Yb, Ytterbium (ppm) | 0.95 | 0.073 | 0.88 | 1.03 | 4-Acid Digestion |
Zn, Zinc (ppm) | 251 | 16 | 240 | 261 | 4-Acid Digestion |
Zr, Zirconium (ppm) | 49.4 | 4.30 | 45.7 | 53.1 | 4-Acid Digestion |
Ag, Silver (ppm) | 0.403 | 0.021 | 0.378 | 0.428 | Aqua Regia Digestion |
Al, Aluminium (wt.%) | 1.36 | 0.112 | 1.28 | 1.43 | Aqua Regia Digestion |
As, Arsenic (ppm) | 16.0 | 0.54 | 15.3 | 16.6 | Aqua Regia Digestion |
B, Boron (ppm) | < 10.0 | IND | IND | IND | Aqua Regia Digestion |
Ba, Barium (ppm) | 69 | 4.1 | 66 | 72 | Aqua Regia Digestion |
Be, Beryllium (ppm) | 0.14 | 0.02 | 0.12 | 0.16 | Aqua Regia Digestion |
Bi, Bismuth (ppm) | 0.26 | 0.018 | 0.24 | 0.29 | Aqua Regia Digestion |
Ca, Calcium (wt.%) | 0.946 | 0.112 | 0.866 | 1.025 | Aqua Regia Digestion |
Cd, Cadmium (ppm) | 0.53 | 0.025 | 0.49 | 0.56 | Aqua Regia Digestion |
Ce, Cerium (ppm) | 54 | 3.5 | 52 | 56 | Aqua Regia Digestion |
Co, Cobalt (ppm) | 59 | 2.0 | 56 | 62 | Aqua Regia Digestion |
Cr, Chromium (ppm) | 41.7 | 2.16 | 40.0 | 43.4 | Aqua Regia Digestion |
Cs, Caesium (ppm) | 1.88 | 0.147 | 1.77 | 1.99 | Aqua Regia Digestion |
Cu, Copper (ppm) | 168 | 5 | 164 | 172 | Aqua Regia Digestion |
Dy, Dysprosium (ppm) | 1.06 | 0.15 | 0.86 | 1.26 | Aqua Regia Digestion |
Eu, Europium (ppm) | 0.57 | 0.07 | 0.47 | 0.67 | Aqua Regia Digestion |
Fe, Iron (wt.%) | 2.13 | 0.176 | 2.01 | 2.25 | Aqua Regia Digestion |
Ga, Gallium (ppm) | 4.71 | 0.60 | 4.35 | 5.06 | Aqua Regia Digestion |
Gd, Gadolinium (ppm) | 1.99 | 0.43 | 1.40 | 2.58 | Aqua Regia Digestion |
Ge, Germanium (ppm) | 0.050 | 0.011 | 0.035 | 0.066 | Aqua Regia Digestion |
Hf, Hafnium (ppm) | 0.19 | 0.02 | 0.17 | 0.21 | Aqua Regia Digestion |
Ho, Holmium (ppm) | 0.18 | 0.017 | 0.16 | 0.21 | Aqua Regia Digestion |
In, Indium (ppm) | 0.035 | 0.004 | 0.030 | 0.040 | Aqua Regia Digestion |
K, Potassium (wt.%) | 0.261 | 0.013 | 0.249 | 0.273 | Aqua Regia Digestion |
La, Lanthanum (ppm) | 28.8 | 0.86 | 27.5 | 30.2 | Aqua Regia Digestion |
Li, Lithium (ppm) | 23.1 | 1.69 | 21.6 | 24.6 | Aqua Regia Digestion |
Lu, Lutetium (ppm) | 0.053 | 0.004 | 0.047 | 0.059 | Aqua Regia Digestion |
Mg, Magnesium (wt.%) | 0.839 | 0.047 | 0.803 | 0.876 | Aqua Regia Digestion |
Mn, Manganese (wt.%) | 0.031 | 0.002 | 0.029 | 0.032 | Aqua Regia Digestion |
Mo, Molybdenum (ppm) | 13.7 | 0.66 | 13.1 | 14.3 | Aqua Regia Digestion |
Na, Sodium (wt.%) | 0.101 | 0.006 | 0.094 | 0.108 | Aqua Regia Digestion |
Nb, Niobium (ppm) | 0.28 | 0.08 | 0.22 | 0.35 | Aqua Regia Digestion |
Nd, Neodymium (ppm) | 19.2 | 1.58 | 17.3 | 21.0 | Aqua Regia Digestion |
Ni, Nickel (ppm) | 94 | 4.9 | 90 | 98 | Aqua Regia Digestion |
P, Phosphorus (wt.%) | 0.053 | 0.003 | 0.050 | 0.055 | Aqua Regia Digestion |
Pb, Lead (ppm) | 254 | 10 | 244 | 264 | Aqua Regia Digestion |
Pd, Palladium (ppb) | 23.1 | 2.1 | 19.7 | 26.5 | Aqua Regia Digestion |
Pr, Praseodymium (ppm) | 5.59 | 0.310 | 5.16 | 6.02 | Aqua Regia Digestion |
Pt, Platinum (ppb) | 36.9 | 4.5 | 28.5 | 45.2 | Aqua Regia Digestion |
Rb, Rubidium (ppm) | 25.7 | 2.00 | 24.2 | 27.3 | Aqua Regia Digestion |
Re, Rhenium (ppm) | 0.001 | 0.000 | 0.001 | 0.001 | Aqua Regia Digestion |
S, Sulphur (wt.%) | 0.110 | 0.003 | 0.108 | 0.113 | Aqua Regia Digestion |
Sb, Antimony (ppm) | 0.35 | 0.04 | 0.30 | 0.40 | Aqua Regia Digestion |
Sc, Scandium (ppm) | 3.17 | 0.41 | 2.86 | 3.48 | Aqua Regia Digestion |
Sm, Samarium (ppm) | 2.61 | 0.216 | 2.43 | 2.80 | Aqua Regia Digestion |
Sn, Tin (ppm) | 0.65 | 0.07 | 0.59 | 0.71 | Aqua Regia Digestion |
Sr, Strontium (ppm) | 48.3 | 5.9 | 44.1 | 52.5 | Aqua Regia Digestion |
Ta, Tantalum (ppm) | < 0.010 | IND | IND | IND | Aqua Regia Digestion |
Te, Tellurium (ppm) | 0.049 | 0.008 | 0.041 | 0.058 | Aqua Regia Digestion |
Th, Thorium (ppm) | 2.55 | 0.158 | 2.40 | 2.69 | Aqua Regia Digestion |
Ti, Titanium (wt.%) | 0.124 | 0.022 | 0.110 | 0.138 | Aqua Regia Digestion |
Tl, Thallium (ppm) | 0.21 | 0.02 | 0.20 | 0.23 | Aqua Regia Digestion |
U, Uranium (ppm) | 0.26 | 0.021 | 0.24 | 0.28 | Aqua Regia Digestion |
V, Vanadium (ppm) | 42.8 | 2.60 | 40.3 | 45.4 | Aqua Regia Digestion |
W, Tungsten (ppm) | 0.28 | 0.03 | 0.24 | 0.33 | Aqua Regia Digestion |
Y, Yttrium (ppm) | 4.23 | 0.62 | 3.84 | 4.63 | Aqua Regia Digestion |
Yb, Ytterbium (ppm) | 0.40 | 0.06 | 0.34 | 0.46 | Aqua Regia Digestion |
Zn, Zinc (ppm) | 239 | 8 | 231 | 246 | Aqua Regia Digestion |
Zr, Zirconium (ppm) | 5.06 | 0.71 | 4.61 | 5.52 | Aqua Regia Digestion |