Specifications
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CRM State:
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Matrix:
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Mineralisation:
OREAS 27b is a rhyodacite blank chip CRM. The material was sourced from a quarry east of Melbourne (Victoria), Australia. It contains 39 certified values by 4-acid digestion and Au by fire assay. Indicative values for 23 additional elements are also provided (see Certificate).
Analyte | Certified Value | 1SD | 95% Confidence Limits Low | 95% Confidence Limits High | Method |
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Au, Gold (ppb) | < 1 | IND | IND | IND | Pb Fire Assay |
Cu, Copper (ppm) | 5.61 | 1.15 | 4.57 | 6.65 | 4-Acid Digestion |
Pb, Lead (ppm) | 26.3 | 1.67 | 25.1 | 27.5 | 4-Acid Digestion |
Al, Aluminium (wt.%) | 7.44 | 0.263 | 7.12 | 7.76 | 4-Acid Digestion |
As, Arsenic (ppm) | 5.53 | 0.64 | 5.11 | 5.95 | 4-Acid Digestion |
Ba, Barium (ppm) | 3089 | 139 | 2974 | 3205 | 4-Acid Digestion |
Be, Beryllium (ppm) | 3.28 | 0.137 | 3.14 | 3.41 | 4-Acid Digestion |
Ca, Calcium (wt.%) | 1.34 | 0.057 | 1.29 | 1.40 | 4-Acid Digestion |
Cd, Cadmium (ppm) | 0.29 | 0.026 | 0.27 | 0.30 | 4-Acid Digestion |
Ce, Cerium (ppm) | 90 | 8.3 | 79 | 101 | 4-Acid Digestion |
Co, Cobalt (ppm) | 2.25 | 0.221 | 2.01 | 2.49 | 4-Acid Digestion |
Cs, Caesium (ppm) | 7.32 | 0.610 | 6.64 | 8.00 | 4-Acid Digestion |
Fe, Iron (wt.%) | 2.74 | 0.165 | 2.60 | 2.88 | 4-Acid Digestion |
Ga, Gallium (ppm) | 23.2 | 0.96 | 22.2 | 24.2 | 4-Acid Digestion |
Hf, Hafnium (ppm) | 7.23 | 0.559 | 6.49 | 7.97 | 4-Acid Digestion |
In, Indium (ppm) | 0.065 | 0.008 | 0.059 | 0.071 | 4-Acid Digestion |
K, Potassium (wt.%) | 3.07 | 0.054 | 3.01 | 3.12 | 4-Acid Digestion |
La, Lanthanum (ppm) | 45.0 | 6.1 | 36.9 | 53.1 | 4-Acid Digestion |
Li, Lithium (ppm) | 28.6 | 1.13 | 27.5 | 29.6 | 4-Acid Digestion |
Mg, Magnesium (wt.%) | 0.116 | 0.010 | 0.106 | 0.127 | 4-Acid Digestion |
Mn, Manganese (ppm) | 336 | 15 | 325 | 347 | 4-Acid Digestion |
Mo, Molybdenum (ppm) | 3.22 | 0.38 | 3.00 | 3.44 | 4-Acid Digestion |
Na, Sodium (wt.%) | 2.91 | 0.142 | 2.72 | 3.09 | 4-Acid Digestion |
Nb, Niobium (ppm) | 19.8 | 1.09 | 18.4 | 21.3 | 4-Acid Digestion |
P, Phosphorus (ppm) | 280 | 14 | 267 | 292 | 4-Acid Digestion |
Rb, Rubidium (ppm) | 143 | 6 | 137 | 149 | 4-Acid Digestion |
Sb, Antimony (ppm) | 1.17 | 0.100 | 1.10 | 1.24 | 4-Acid Digestion |
Sc, Scandium (ppm) | 4.05 | 0.129 | 3.90 | 4.20 | 4-Acid Digestion |
Sn, Tin (ppm) | 4.02 | 0.180 | 3.88 | 4.17 | 4-Acid Digestion |
Sr, Strontium (ppm) | 189 | 8 | 181 | 197 | 4-Acid Digestion |
Ta, Tantalum (ppm) | 1.40 | 0.22 | 1.15 | 1.65 | 4-Acid Digestion |
Th, Thorium (ppm) | 15.2 | 1.28 | 14.1 | 16.2 | 4-Acid Digestion |
Ti, Titanium (wt.%) | 0.109 | 0.002 | 0.108 | 0.111 | 4-Acid Digestion |
Tl, Thallium (ppm) | 0.71 | 0.024 | 0.70 | 0.72 | 4-Acid Digestion |
U, Uranium (ppm) | 6.18 | 0.471 | 5.80 | 6.56 | 4-Acid Digestion |
V, Vanadium (ppm) | 2.63 | 0.57 | 2.11 | 3.15 | 4-Acid Digestion |
W, Tungsten (ppm) | 1.62 | 0.23 | 1.54 | 1.71 | 4-Acid Digestion |
Y, Yttrium (ppm) | 15.1 | 1.7 | 13.3 | 17.0 | 4-Acid Digestion |
Zn, Zinc (ppm) | 118 | 7 | 113 | 124 | 4-Acid Digestion |
Zr, Zirconium (ppm) | 266 | 6 | 261 | 270 | 4-Acid Digestion |
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