Specifications
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CRM State:
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Matrix:
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Mineralisation:
OREAS 34k is a zinc ore certified reference material sourced from the Lisheen carbonate hosted Zn-Pb deposit located in south-central Ireland. It is prepared from a blend of tailings, ore, intermediate and concentrate samples.
Ten commercial laboratories participated in the analytical certification program. Both partial and total methods were employed creating two sets of certified values including:
Analyte | Certified Value | 1SD | 95% Confidence Limits Low | 95% Confidence Limits High | Method |
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Zn, Zinc (wt.%) | 23.50 | 0.417 | 23.23 | 23.78 | Peroxide Fusion ICP |
Pb, Lead (wt.%) | 2.08 | 0.050 | 2.05 | 2.11 | Acid Digestion (no HF) |
Ag, Silver (ppm) | 17.4 | 1.19 | 16.6 | 18.2 | Acid Digestion (no HF) |
As, Arsenic (ppm) | 2194 | 86 | 2149 | 2239 | Acid Digestion (no HF) |
Ba, Barium (ppm) | 161 | 17 | 137 | 186 | Acid Digestion (no HF) |
Ca, Calcium (wt.%) | 4.16 | 0.127 | 3.89 | 4.43 | Acid Digestion (no HF) |
Cd, Cadmium (ppm) | 499 | 15 | 481 | 517 | Acid Digestion (no HF) |
Co, Cobalt (ppm) | 215 | 7 | 209 | 220 | Acid Digestion (no HF) |
Cu, Copper (ppm) | 76 | 5.2 | 70 | 83 | Acid Digestion (no HF) |
Fe, Iron (wt.%) | 20.38 | 0.434 | 19.43 | 21.34 | Acid Digestion (no HF) |
Mg, Magnesium (wt.%) | 1.41 | 0.032 | 1.35 | 1.47 | Acid Digestion (no HF) |
Mn, Manganese (ppm) | 167 | 6 | 145 | 188 | Acid Digestion (no HF) |
Ni, Nickel (ppm) | 611 | 17 | 598 | 624 | Acid Digestion (no HF) |
P, Phosphorus (ppm) | 414 | 39 | 343 | 484 | Acid Digestion (no HF) |
S, Sulphur (wt.%) | 33.21 | 1.059 | 31.65 | 34.77 | Acid Digestion (no HF) |
Tl, Thallium (ppm) | 352 | 21 | 333 | 370 | Acid Digestion (no HF) |
Zn, Zinc (wt.%) | 23.76 | 0.508 | 23.38 | 24.14 | Acid Digestion (no HF) |
As, Arsenic (ppm) | 2246 | 77 | 2097 | 2394 | Peroxide Fusion ICP |
Cd, Cadmium (ppm) | 497 | 11 | 457 | 536 | Peroxide Fusion ICP |
Co, Cobalt (ppm) | 208 | 10 | 200 | 217 | Peroxide Fusion ICP |
Cu, Copper (ppm) | 89 | 3.9 | 75 | 102 | Peroxide Fusion ICP |
Fe, Iron (wt.%) | 20.51 | 0.449 | 19.83 | 21.19 | Peroxide Fusion ICP |
Mg, Magnesium (wt.%) | 1.47 | 0.028 | 1.41 | 1.53 | Peroxide Fusion ICP |
Ni, Nickel (ppm) | 578 | 38 | 539 | 617 | Peroxide Fusion ICP |
Pb, Lead (wt.%) | 2.05 | 0.046 | 1.98 | 2.12 | Peroxide Fusion ICP |
Tl, Thallium (ppm) | 353 | 18 | 285 | 422 | Peroxide Fusion ICP |
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