Specifications
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CRM State:
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Matrix:
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Mineralisation:
OREAS 48 is derived from glacial till collected in the Rainy River District of western Ontario. 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 background 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 trace elements was evaluated using fused bead laser ablation with ICP-MS.
Analyte | Certified Value | 1SD | Expanded Uncertainty Low | Expanded Uncertainty High | Method |
---|---|---|---|---|---|
Au, Gold (ppb) | 3.0 | 1.40 | 1.6 | 4.3 | Pb Fire Assay |
Au, Gold (ppb) | 2.5 | 0.59 | 1.5 | 3.6 | Aqua Regia Digestion (sample weights 10-50g) |
Ag, Silver (ppm) | < 5.00 | IND | IND | IND | Borate / Peroxide Fusion ICP |
Al, Aluminium (wt.%) | 8.02 | 0.193 | 7.83 | 8.22 | Borate / Peroxide Fusion ICP |
As, Arsenic (ppm) | < 4.00 | IND | IND | IND | Borate / Peroxide Fusion ICP |
Ba, Barium (ppm) | 431 | 17 | 413 | 449 | Borate / Peroxide Fusion ICP |
Be, Beryllium (ppm) | 0.93 | 0.21 | 0.68 | 1.17 | Borate / Peroxide Fusion ICP |
Ca, Calcium (wt.%) | 3.79 | 0.105 | 3.68 | 3.90 | Borate / Peroxide Fusion ICP |
Ce, Cerium (ppm) | 35.4 | 2.41 | 32.8 | 37.9 | Borate / Peroxide Fusion ICP |
Co, Cobalt (ppm) | 20.0 | 1.65 | 18.1 | 21.9 | Borate / Peroxide Fusion ICP |
Cr, Chromium (ppm) | 78 | 7.4 | 68 | 88 | Borate / Peroxide Fusion ICP |
Cs, Caesium (ppm) | 1.17 | 0.15 | 0.99 | 1.35 | Borate / Peroxide Fusion ICP |
Cu, Copper (ppm) | 41.0 | 3.45 | 35.8 | 46.2 | Borate / Peroxide Fusion ICP |
Dy, Dysprosium (ppm) | 1.95 | 0.115 | 1.81 | 2.10 | Borate / Peroxide Fusion ICP |
Er, Erbium (ppm) | 1.11 | 0.060 | 1.01 | 1.21 | Borate / Peroxide Fusion ICP |
Eu, Europium (ppm) | 0.87 | 0.045 | 0.80 | 0.94 | Borate / Peroxide Fusion ICP |
Fe, Iron (wt.%) | 4.29 | 0.101 | 4.17 | 4.41 | Borate / Peroxide Fusion ICP |
Ga, Gallium (ppm) | 20.6 | 1.07 | 19.4 | 21.9 | Borate / Peroxide Fusion ICP |
Gd, Gadolinium (ppm) | 2.48 | 0.177 | 2.20 | 2.77 | Borate / Peroxide Fusion ICP |
Ge, Germanium (ppm) | 1.17 | 0.22 | 0.96 | 1.37 | Borate / Peroxide Fusion ICP |
Ho, Holmium (ppm) | 0.38 | 0.023 | 0.34 | 0.41 | Borate / Peroxide Fusion ICP |
In, Indium (ppm) | < 0.30 | IND | IND | IND | Borate / Peroxide Fusion ICP |
K, Potassium (wt.%) | 1.18 | 0.047 | 1.14 | 1.23 | Borate / Peroxide Fusion ICP |
La, Lanthanum (ppm) | 16.9 | 1.59 | 15.4 | 18.3 | Borate / Peroxide Fusion ICP |
Li, Lithium (ppm) | 19.8 | 1.56 | 17.6 | 22.0 | Borate / Peroxide Fusion ICP |
Lu, Lutetium (ppm) | 0.15 | 0.02 | 0.14 | 0.17 | Borate / Peroxide Fusion ICP |
Mg, Magnesium (wt.%) | 1.72 | 0.044 | 1.68 | 1.76 | Borate / Peroxide Fusion ICP |
Mn, Manganese (wt.%) | 0.069 | 0.002 | 0.066 | 0.072 | Borate / Peroxide Fusion ICP |
Nb, Niobium (ppm) | 3.18 | 0.51 | 2.66 | 3.71 | Borate / Peroxide Fusion ICP |
Nd, Neodymium (ppm) | 16.8 | 1.38 | 15.5 | 18.0 | Borate / Peroxide Fusion ICP |
Ni, Nickel (ppm) | 41.3 | 5.4 | 32.7 | 49.9 | Borate / Peroxide Fusion ICP |
P, Phosphorus (wt.%) | 0.054 | 0.004 | 0.050 | 0.058 | Borate / Peroxide Fusion ICP |
Pb, Lead (ppm) | 5.99 | 1.61 | 3.81 | 8.17 | Borate / Peroxide Fusion ICP |
Pr, Praseodymium (ppm) | 4.29 | 0.266 | 3.97 | 4.62 | Borate / Peroxide Fusion ICP |
Rb, Rubidium (ppm) | 36.6 | 2.19 | 34.0 | 39.2 | Borate / Peroxide Fusion ICP |
Re, Rhenium (ppm) | < 0.010 | IND | IND | IND | Borate / Peroxide Fusion ICP |
S, Sulphur (wt.%) | 0.047 | 0.007 | 0.041 | 0.053 | Borate / Peroxide Fusion ICP |
Sc, Scandium (ppm) | 14.5 | 0.87 | 13.4 | 15.6 | Borate / Peroxide Fusion ICP |
Si, Silicon (wt.%) | 29.55 | 0.345 | 29.01 | 30.08 | Borate / Peroxide Fusion ICP |
Sm, Samarium (ppm) | 2.97 | 0.234 | 2.62 | 3.33 | Borate / Peroxide Fusion ICP |
Sr, Strontium (ppm) | 464 | 21 | 440 | 488 | Borate / Peroxide Fusion ICP |
Tb, Terbium (ppm) | 0.35 | 0.022 | 0.31 | 0.39 | Borate / Peroxide Fusion ICP |
Te, Tellurium (ppm) | < 0.50 | IND | IND | IND | Borate / Peroxide Fusion ICP |
Th, Thorium (ppm) | 2.46 | 0.105 | 2.24 | 2.67 | Borate / Peroxide Fusion ICP |
Ti, Titanium (wt.%) | 0.324 | 0.009 | 0.312 | 0.337 | Borate / Peroxide Fusion ICP |
Tl, Thallium (ppm) | 0.19 | 0.02 | 0.15 | 0.22 | Borate / Peroxide Fusion ICP |
Tm, Thulium (ppm) | 0.16 | 0.02 | 0.13 | 0.18 | Borate / Peroxide Fusion ICP |
U, Uranium (ppm) | 0.53 | 0.06 | 0.44 | 0.63 | Borate / Peroxide Fusion ICP |
V, Vanadium (ppm) | 115 | 6 | 108 | 121 | Borate / Peroxide Fusion ICP |
W, Tungsten (ppm) | 0.78 | 0.22 | 0.40 | 1.17 | Borate / Peroxide Fusion ICP |
Y, Yttrium (ppm) | 10.5 | 0.96 | 9.7 | 11.4 | Borate / Peroxide Fusion ICP |
Yb, Ytterbium (ppm) | 1.03 | 0.11 | 0.89 | 1.17 | Borate / Peroxide Fusion ICP |
Zn, Zinc (ppm) | 64 | 7 | 57 | 71 | Borate / Peroxide Fusion ICP |
Zr, Zirconium (ppm) | 95 | 8.6 | 84 | 106 | Borate / Peroxide Fusion ICP |
Ag, Silver (ppm) | 0.070 | 0.014 | 0.056 | 0.083 | 4-Acid Digestion |
Al, Aluminium (wt.%) | 7.75 | 0.228 | 7.53 | 7.98 | 4-Acid Digestion |
As, Arsenic (ppm) | 0.97 | 0.17 | 0.71 | 1.23 | 4-Acid Digestion |
Ba, Barium (ppm) | 423 | 17 | 411 | 435 | 4-Acid Digestion |
Be, Beryllium (ppm) | 0.75 | 0.041 | 0.72 | 0.79 | 4-Acid Digestion |
Bi, Bismuth (ppm) | 0.12 | 0.011 | 0.10 | 0.13 | 4-Acid Digestion |
Ca, Calcium (wt.%) | 3.64 | 0.107 | 3.55 | 3.73 | 4-Acid Digestion |
Cd, Cadmium (ppm) | 0.053 | 0.008 | 0.042 | 0.065 | 4-Acid Digestion |
Ce, Cerium (ppm) | 33.2 | 2.52 | 31.1 | 35.3 | 4-Acid Digestion |
Co, Cobalt (ppm) | 19.4 | 0.66 | 18.7 | 20.1 | 4-Acid Digestion |
Cr, Chromium (ppm) | 62 | 8 | 57 | 67 | 4-Acid Digestion |
Cs, Caesium (ppm) | 1.16 | 0.061 | 1.09 | 1.23 | 4-Acid Digestion |
Cu, Copper (ppm) | 40.0 | 1.34 | 38.2 | 41.8 | 4-Acid Digestion |
Dy, Dysprosium (ppm) | 1.90 | 0.106 | 1.79 | 2.00 | 4-Acid Digestion |
Er, Erbium (ppm) | 1.06 | 0.063 | 0.99 | 1.12 | 4-Acid Digestion |
Eu, Europium (ppm) | 0.84 | 0.030 | 0.79 | 0.90 | 4-Acid Digestion |
Fe, Iron (wt.%) | 4.20 | 0.123 | 4.09 | 4.31 | 4-Acid Digestion |
Ga, Gallium (ppm) | 19.3 | 0.84 | 18.5 | 20.1 | 4-Acid Digestion |
Gd, Gadolinium (ppm) | 2.37 | 0.194 | 2.21 | 2.53 | 4-Acid Digestion |
Hf, Hafnium (ppm) | 1.52 | 0.081 | 1.41 | 1.64 | 4-Acid Digestion |
Ho, Holmium (ppm) | 0.36 | 0.030 | 0.33 | 0.39 | 4-Acid Digestion |
In, Indium (ppm) | 0.032 | 0.003 | 0.026 | 0.038 | 4-Acid Digestion |
K, Potassium (wt.%) | 1.16 | 0.031 | 1.13 | 1.19 | 4-Acid Digestion |
La, Lanthanum (ppm) | 15.8 | 1.02 | 14.7 | 17.0 | 4-Acid Digestion |
Li, Lithium (ppm) | 19.7 | 1.24 | 18.8 | 20.6 | 4-Acid Digestion |
Lu, Lutetium (ppm) | 0.14 | 0.010 | 0.13 | 0.15 | 4-Acid Digestion |
Mg, Magnesium (wt.%) | 1.65 | 0.041 | 1.61 | 1.69 | 4-Acid Digestion |
Mn, Manganese (wt.%) | 0.067 | 0.002 | 0.065 | 0.069 | 4-Acid Digestion |
Mo, Molybdenum (ppm) | 0.81 | 0.057 | 0.70 | 0.93 | 4-Acid Digestion |
Na, Sodium (wt.%) | 3.04 | 0.081 | 2.96 | 3.12 | 4-Acid Digestion |
Nb, Niobium (ppm) | 3.05 | 0.122 | 2.90 | 3.20 | 4-Acid Digestion |
Nd, Neodymium (ppm) | 15.6 | 1.15 | 14.4 | 16.8 | 4-Acid Digestion |
Ni, Nickel (ppm) | 38.5 | 1.51 | 37.1 | 39.8 | 4-Acid Digestion |
P, Phosphorus (wt.%) | 0.053 | 0.003 | 0.051 | 0.055 | 4-Acid Digestion |
Pb, Lead (ppm) | 5.40 | 0.390 | 5.00 | 5.79 | 4-Acid Digestion |
Pr, Praseodymium (ppm) | 3.96 | 0.308 | 3.74 | 4.18 | 4-Acid Digestion |
Rb, Rubidium (ppm) | 33.7 | 3.11 | 31.5 | 35.9 | 4-Acid Digestion |
S, Sulphur (wt.%) | 0.050 | 0.000 | 0.049 | 0.051 | 4-Acid Digestion |
Sb, Antimony (ppm) | 0.10 | 0.02 | 0.08 | 0.12 | 4-Acid Digestion |
Sc, Scandium (ppm) | 14.9 | 0.60 | 14.3 | 15.5 | 4-Acid Digestion |
Sm, Samarium (ppm) | 2.85 | 0.178 | 2.66 | 3.04 | 4-Acid Digestion |
Sn, Tin (ppm) | 0.60 | 0.030 | 0.55 | 0.65 | 4-Acid Digestion |
Sr, Strontium (ppm) | 467 | 18 | 454 | 479 | 4-Acid Digestion |
Ta, Tantalum (ppm) | 0.21 | 0.03 | 0.19 | 0.23 | 4-Acid Digestion |
Tb, Terbium (ppm) | 0.33 | 0.014 | 0.31 | 0.35 | 4-Acid Digestion |
Th, Thorium (ppm) | 2.42 | 0.208 | 2.19 | 2.65 | 4-Acid Digestion |
Ti, Titanium (wt.%) | 0.318 | 0.009 | 0.309 | 0.328 | 4-Acid Digestion |
Tl, Thallium (ppm) | 0.18 | 0.015 | 0.17 | 0.20 | 4-Acid Digestion |
Tm, Thulium (ppm) | 0.15 | 0.009 | 0.13 | 0.16 | 4-Acid Digestion |
U, Uranium (ppm) | 0.48 | 0.034 | 0.45 | 0.52 | 4-Acid Digestion |
V, Vanadium (ppm) | 111 | 3 | 108 | 114 | 4-Acid Digestion |
W, Tungsten (ppm) | 0.60 | 0.059 | 0.53 | 0.68 | 4-Acid Digestion |
Y, Yttrium (ppm) | 10.1 | 0.43 | 9.6 | 10.7 | 4-Acid Digestion |
Yb, Ytterbium (ppm) | 0.94 | 0.075 | 0.87 | 1.02 | 4-Acid Digestion |
Zn, Zinc (ppm) | 60 | 3.2 | 57 | 62 | 4-Acid Digestion |
Zr, Zirconium (ppm) | 49.7 | 4.00 | 46.4 | 53.0 | 4-Acid Digestion |
Ag, Silver (ppm) | 0.057 | 0.006 | 0.049 | 0.065 | Aqua Regia Digestion |
Al, Aluminium (wt.%) | 1.29 | 0.073 | 1.23 | 1.34 | Aqua Regia Digestion |
As, Arsenic (ppm) | 0.85 | 0.14 | 0.67 | 1.04 | Aqua Regia Digestion |
B, Boron (ppm) | < 10.0 | IND | IND | IND | Aqua Regia Digestion |
Ba, Barium (ppm) | 67 | 3.9 | 64 | 70 | Aqua Regia Digestion |
Be, Beryllium (ppm) | 0.12 | 0.010 | 0.11 | 0.13 | Aqua Regia Digestion |
Bi, Bismuth (ppm) | 0.066 | 0.007 | 0.055 | 0.078 | Aqua Regia Digestion |
Ca, Calcium (wt.%) | 0.905 | 0.123 | 0.827 | 0.983 | Aqua Regia Digestion |
Cd, Cadmium (ppm) | 0.029 | 0.004 | 0.023 | 0.035 | Aqua Regia Digestion |
Ce, Cerium (ppm) | 26.8 | 1.89 | 25.3 | 28.2 | Aqua Regia Digestion |
Co, Cobalt (ppm) | 11.8 | 0.37 | 11.3 | 12.2 | Aqua Regia Digestion |
Cr, Chromium (ppm) | 36.8 | 1.98 | 35.1 | 38.5 | Aqua Regia Digestion |
Cs, Caesium (ppm) | 0.73 | 0.061 | 0.68 | 0.78 | Aqua Regia Digestion |
Cu, Copper (ppm) | 39.7 | 1.69 | 38.3 | 41.2 | Aqua Regia Digestion |
Dy, Dysprosium (ppm) | 0.96 | 0.14 | 0.79 | 1.14 | Aqua Regia Digestion |
Eu, Europium (ppm) | 0.43 | 0.08 | 0.33 | 0.53 | Aqua Regia Digestion |
Fe, Iron (wt.%) | 2.10 | 0.22 | 1.96 | 2.23 | Aqua Regia Digestion |
Ga, Gallium (ppm) | 4.48 | 0.375 | 4.21 | 4.76 | Aqua Regia Digestion |
Gd, Gadolinium (ppm) | 1.47 | 0.19 | 1.20 | 1.74 | Aqua Regia Digestion |
Hf, Hafnium (ppm) | 0.19 | 0.02 | 0.17 | 0.21 | Aqua Regia Digestion |
Ho, Holmium (ppm) | 0.17 | 0.03 | 0.14 | 0.20 | Aqua Regia Digestion |
In, Indium (ppm) | 0.009 | 0.003 | 0.007 | 0.012 | Aqua Regia Digestion |
K, Potassium (wt.%) | 0.264 | 0.014 | 0.252 | 0.277 | Aqua Regia Digestion |
La, Lanthanum (ppm) | 12.6 | 0.63 | 12.0 | 13.2 | Aqua Regia Digestion |
Li, Lithium (ppm) | 14.9 | 0.89 | 14.3 | 15.6 | Aqua Regia Digestion |
Lu, Lutetium (ppm) | 0.053 | 0.005 | 0.043 | 0.062 | Aqua Regia Digestion |
Mg, Magnesium (wt.%) | 0.808 | 0.039 | 0.778 | 0.839 | Aqua Regia Digestion |
Mn, Manganese (wt.%) | 0.030 | 0.001 | 0.029 | 0.031 | Aqua Regia Digestion |
Mo, Molybdenum (ppm) | 0.72 | 0.067 | 0.61 | 0.82 | Aqua Regia Digestion |
Na, Sodium (wt.%) | 0.095 | 0.006 | 0.088 | 0.102 | Aqua Regia Digestion |
Nb, Niobium (ppm) | 0.16 | 0.04 | 0.12 | 0.20 | Aqua Regia Digestion |
Nd, Neodymium (ppm) | 11.5 | 0.95 | 10.4 | 12.7 | Aqua Regia Digestion |
Ni, Nickel (ppm) | 23.4 | 1.11 | 22.2 | 24.6 | Aqua Regia Digestion |
P, Phosphorus (wt.%) | 0.051 | 0.002 | 0.049 | 0.053 | Aqua Regia Digestion |
Pb, Lead (ppm) | 1.50 | 0.25 | 1.32 | 1.68 | Aqua Regia Digestion |
Pr, Praseodymium (ppm) | 3.05 | 0.211 | 2.76 | 3.34 | Aqua Regia Digestion |
Rb, Rubidium (ppm) | 13.4 | 0.64 | 12.8 | 14.1 | Aqua Regia Digestion |
Re, Rhenium (ppm) | 0.000 | 0.000 | 0.000 | 0.001 | Aqua Regia Digestion |
S, Sulphur (wt.%) | 0.050 | 0.001 | 0.050 | 0.050 | Aqua Regia Digestion |
Sc, Scandium (ppm) | 3.20 | 0.243 | 2.95 | 3.46 | Aqua Regia Digestion |
Sm, Samarium (ppm) | 1.82 | 0.164 | 1.63 | 2.01 | Aqua Regia Digestion |
Sn, Tin (ppm) | 0.25 | 0.04 | 0.21 | 0.29 | Aqua Regia Digestion |
Sr, Strontium (ppm) | 45.4 | 5.6 | 41.3 | 49.4 | Aqua Regia Digestion |
Ta, Tantalum (ppm) | < 0.010 | IND | IND | IND | Aqua Regia Digestion |
Te, Tellurium (ppm) | 0.020 | 0.007 | 0.014 | 0.026 | Aqua Regia Digestion |
Th, Thorium (ppm) | 2.04 | 0.161 | 1.88 | 2.20 | Aqua Regia Digestion |
Ti, Titanium (wt.%) | 0.133 | 0.019 | 0.120 | 0.145 | Aqua Regia Digestion |
Tl, Thallium (ppm) | 0.094 | 0.009 | 0.082 | 0.106 | Aqua Regia Digestion |
U, Uranium (ppm) | 0.25 | 0.020 | 0.23 | 0.28 | Aqua Regia Digestion |
V, Vanadium (ppm) | 43.5 | 2.57 | 41.2 | 45.9 | Aqua Regia Digestion |
W, Tungsten (ppm) | 0.19 | 0.03 | 0.15 | 0.22 | Aqua Regia Digestion |
Y, Yttrium (ppm) | 4.17 | 0.57 | 3.79 | 4.55 | Aqua Regia Digestion |
Yb, Ytterbium (ppm) | 0.38 | 0.04 | 0.32 | 0.45 | Aqua Regia Digestion |
Zn, Zinc (ppm) | 40.6 | 2.15 | 38.7 | 42.4 | Aqua Regia Digestion |
Zr, Zirconium (ppm) | 4.97 | 0.66 | 4.51 | 5.43 | Aqua Regia Digestion |