Specifications
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CRM State:
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Matrix:
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Mineralisation:
OREAS 990c
OREAS 990c is a copper-gold-silver-zinc-lead concentrate certified reference material (CRM) sourced from the Rosebery metallurgical plant owned and operated by MMG Ltd. The Rosebery mine and plant are located in the north-west region of Tasmania, Australia approximately 300 kilometres north-west of Hobart and 125 kilometres south of Burnie. The key minerals of economic importance include sphalerite, galena, pyrite, chalcopyrite and electrum. Fifteen ‘umpire’ laboratories undertook copper, gold, silver and moisture analysis on the sample as received but the results are corrected to a dry sample basis. The term ‘umpire’ here refers to the routine analysis by these laboratories using classical methodologies for precious and base metals. Fifteen geoanalytical laboratories also participated in the program to undertake the following:
- Gold and Silver by reduced charge, fire assay with gravimetric finish;
- Copper by Classical Wet Chemistry;
- Full ICP-OES & MS elemental suites by 4-acid digestion;
- Full ICP-OES elemental suite by peroxide fusion;
- Fluorine by ion selective electrode;
- S by infrared combustion furnace;
- Gold by instrumental neutron activation analysis (INAA) to confirm homogeneity (undertaken by ANSTO, Lucas Heights).
| Analyte | Certified Value | 1SD | Expanded Uncertainty Low | Expanded Uncertainty High | Method |
|---|---|---|---|---|---|
| Cu, Copper (wt.%) | 17.13 | 0.126 | 17.06 | 17.21 | Classical Wet Chemistry |
| Ag, Silver (ppm) | 2732 | 22 | 2701 | 2763 | Pb Fire Assay |
| Au, Gold (ppm) | 35.35 | 0.620 | 34.96 | 35.74 | Pb Fire Assay |
| Ag, Silver (ppm) | 2751 | 73 | 2642 | 2860 | 4-Acid Digestion |
| Al, Aluminium (wt.%) | 0.778 | 0.024 | 0.759 | 0.797 | 4-Acid Digestion |
| As, Arsenic (ppm) | 5834 | 304 | 5522 | 6147 | 4-Acid Digestion |
| Bi, Bismuth (ppm) | 88 | 5.5 | 82 | 94 | 4-Acid Digestion |
| Ca, Calcium (wt.%) | 0.142 | 0.007 | 0.136 | 0.149 | 4-Acid Digestion |
| Cd, Cadmium (ppm) | 415 | 22 | 398 | 432 | 4-Acid Digestion |
| Ce, Cerium (ppm) | 20.0 | 1.89 | 16.9 | 23.1 | 4-Acid Digestion |
| Co, Cobalt (ppm) | 7.84 | 0.90 | 7.03 | 8.65 | 4-Acid Digestion |
| Cs, Caesium (ppm) | 0.68 | 0.033 | 0.64 | 0.73 | 4-Acid Digestion |
| Cu, Copper (wt.%) | 17.23 | 0.340 | 16.97 | 17.49 | 4-Acid Digestion |
| Fe, Iron (wt.%) | 17.05 | 0.541 | 16.61 | 17.50 | 4-Acid Digestion |
| Ga, Gallium (ppm) | 3.51 | 0.37 | 3.20 | 3.81 | 4-Acid Digestion |
| Hf, Hafnium (ppm) | 0.95 | 0.10 | 0.85 | 1.05 | 4-Acid Digestion |
| In, Indium (ppm) | 14.3 | 1.8 | 13.0 | 15.6 | 4-Acid Digestion |
| K, Potassium (wt.%) | 0.335 | 0.014 | 0.323 | 0.347 | 4-Acid Digestion |
| La, Lanthanum (ppm) | 8.45 | 2.14 | 6.29 | 10.60 | 4-Acid Digestion |
| Li, Lithium (ppm) | 2.89 | 0.49 | 2.46 | 3.32 | 4-Acid Digestion |
| Mg, Magnesium (wt.%) | 0.122 | 0.012 | 0.114 | 0.131 | 4-Acid Digestion |
| Mn, Manganese (wt.%) | 0.368 | 0.011 | 0.360 | 0.375 | 4-Acid Digestion |
| Mo, Molybdenum (ppm) | 141 | 9 | 135 | 147 | 4-Acid Digestion |
| Na, Sodium (wt.%) | 0.034 | 0.005 | 0.029 | 0.039 | 4-Acid Digestion |
| Nb, Niobium (ppm) | 1.17 | 0.113 | 1.02 | 1.32 | 4-Acid Digestion |
| Ni, Nickel (ppm) | 7.80 | 0.574 | 7.19 | 8.40 | 4-Acid Digestion |
| Pb, Lead (wt.%) | 7.98 | 0.181 | 7.83 | 8.12 | 4-Acid Digestion |
| Rb, Rubidium (ppm) | 17.8 | 2.3 | 15.8 | 19.8 | 4-Acid Digestion |
| S, Sulphur (wt.%) | 27.88 | 2.181 | 26.12 | 29.64 | 4-Acid Digestion |
| Sb, Antimony (ppm) | 7696 | 323 | 7317 | 8075 | 4-Acid Digestion |
| Sc, Scandium (ppm) | 1.07 | 0.100 | 0.99 | 1.16 | 4-Acid Digestion |
| Sn, Tin (ppm) | 4.03 | 0.59 | 3.49 | 4.57 | 4-Acid Digestion |
| Sr, Strontium (ppm) | 16.4 | 3.1 | 14.1 | 18.8 | 4-Acid Digestion |
| Ta, Tantalum (ppm) | 0.091 | 0.013 | 0.066 | 0.116 | 4-Acid Digestion |
| Th, Thorium (ppm) | 3.84 | 0.71 | 3.23 | 4.46 | 4-Acid Digestion |
| Ti, Titanium (wt.%) | 0.027 | 0.003 | 0.025 | 0.029 | 4-Acid Digestion |
| Tl, Thallium (ppm) | 12.8 | 0.57 | 12.2 | 13.5 | 4-Acid Digestion |
| U, Uranium (ppm) | 2.19 | 0.136 | 2.06 | 2.33 | 4-Acid Digestion |
| Y, Yttrium (ppm) | 5.98 | 0.75 | 5.36 | 6.59 | 4-Acid Digestion |
| Zn, Zinc (wt.%) | 18.44 | 0.449 | 18.10 | 18.77 | 4-Acid Digestion |
| Zr, Zirconium (ppm) | 34.0 | 2.14 | 32.1 | 35.8 | 4-Acid Digestion |
| Al, Aluminium (wt.%) | 0.789 | 0.019 | 0.765 | 0.812 | Peroxide Fusion ICP |
| As, Arsenic (ppm) | 6140 | 270 | 5916 | 6364 | Peroxide Fusion ICP |
| Ba, Barium (ppm) | 1950 | 57 | 1899 | 2001 | Peroxide Fusion ICP |
| Bi, Bismuth (ppm) | 88 | 6.2 | 81 | 94 | Peroxide Fusion ICP |
| Cd, Cadmium (ppm) | 433 | 26 | 409 | 457 | Peroxide Fusion ICP |
| Ce, Cerium (ppm) | 22.2 | 2.19 | 18.7 | 25.6 | Peroxide Fusion ICP |
| Co, Cobalt (ppm) | 7.81 | 0.764 | 6.82 | 8.79 | Peroxide Fusion ICP |
| Cs, Caesium (ppm) | 0.77 | 0.12 | 0.58 | 0.96 | Peroxide Fusion ICP |
| Cu, Copper (wt.%) | 17.32 | 0.233 | 17.04 | 17.60 | Peroxide Fusion ICP |
| Dy, Dysprosium (ppm) | 1.33 | 0.15 | 1.09 | 1.58 | Peroxide Fusion ICP |
| Er, Erbium (ppm) | 0.80 | 0.071 | 0.70 | 0.89 | Peroxide Fusion ICP |
| Fe, Iron (wt.%) | 17.28 | 0.323 | 16.97 | 17.60 | Peroxide Fusion ICP |
| Ga, Gallium (ppm) | 3.69 | 0.49 | 3.14 | 4.24 | Peroxide Fusion ICP |
| Gd, Gadolinium (ppm) | 1.62 | 0.25 | 1.21 | 2.03 | Peroxide Fusion ICP |
| Ge, Germanium (ppm) | < 1.00 | IND | IND | IND | Peroxide Fusion ICP |
| Ho, Holmium (ppm) | 0.27 | 0.03 | 0.20 | 0.34 | Peroxide Fusion ICP |
| In, Indium (ppm) | 16.1 | 0.72 | 14.9 | 17.3 | Peroxide Fusion ICP |
| K, Potassium (wt.%) | 0.351 | 0.034 | 0.302 | 0.399 | Peroxide Fusion ICP |
| La, Lanthanum (ppm) | 11.6 | 0.95 | 10.4 | 12.8 | Peroxide Fusion ICP |
| Mg, Magnesium (wt.%) | 0.129 | 0.007 | 0.120 | 0.138 | Peroxide Fusion ICP |
| Mn, Manganese (wt.%) | 0.384 | 0.013 | 0.373 | 0.395 | Peroxide Fusion ICP |
| Mo, Molybdenum (ppm) | 147 | 9 | 140 | 155 | Peroxide Fusion ICP |
| Nd, Neodymium (ppm) | 9.62 | 1.24 | 8.08 | 11.15 | Peroxide Fusion ICP |
| Pb, Lead (wt.%) | 8.08 | 0.192 | 7.92 | 8.25 | Peroxide Fusion ICP |
| Pr, Praseodymium (ppm) | 2.48 | 0.187 | 2.20 | 2.76 | Peroxide Fusion ICP |
| Rb, Rubidium (ppm) | 19.0 | 1.15 | 16.9 | 21.1 | Peroxide Fusion ICP |
| S, Sulphur (wt.%) | 30.03 | 0.742 | 29.34 | 30.72 | Peroxide Fusion ICP |
| Sb, Antimony (ppm) | 7895 | 587 | 7206 | 8584 | Peroxide Fusion ICP |
| Sc, Scandium (ppm) | < 10.0 | IND | IND | IND | Peroxide Fusion ICP |
| Si, Silicon (wt.%) | 1.79 | 0.047 | 1.73 | 1.85 | Peroxide Fusion ICP |
| Sm, Samarium (ppm) | 1.77 | 0.134 | 1.46 | 2.08 | Peroxide Fusion ICP |
| Sr, Strontium (ppm) | 24.2 | 3.4 | 20.4 | 27.9 | Peroxide Fusion ICP |
| Tb, Terbium (ppm) | 0.23 | 0.04 | 0.14 | 0.32 | Peroxide Fusion ICP |
| Te, Tellurium (ppm) | < 5.00 | IND | IND | IND | Peroxide Fusion ICP |
| Th, Thorium (ppm) | 4.53 | 0.54 | 3.97 | 5.09 | Peroxide Fusion ICP |
| Ti, Titanium (wt.%) | 0.031 | 0.003 | 0.028 | 0.035 | Peroxide Fusion ICP |
| Tl, Thallium (ppm) | 12.0 | 1.04 | 11.2 | 12.8 | Peroxide Fusion ICP |
| Tm, Thulium (ppm) | 0.11 | 0.02 | 0.09 | 0.14 | Peroxide Fusion ICP |
| U, Uranium (ppm) | 2.32 | 0.39 | 1.97 | 2.67 | Peroxide Fusion ICP |
| W, Tungsten (ppm) | 4.76 | 0.49 | 3.93 | 5.59 | Peroxide Fusion ICP |
| Y, Yttrium (ppm) | 7.28 | 0.443 | 6.27 | 8.29 | Peroxide Fusion ICP |
| Yb, Ytterbium (ppm) | 0.78 | 0.13 | 0.56 | 1.01 | Peroxide Fusion ICP |
| Zn, Zinc (wt.%) | 18.49 | 0.526 | 18.06 | 18.92 | Peroxide Fusion ICP |
| F, Fluorine (ppm) | 330 | 39 | 249 | 411 | Ion Selective Electrode |
| S, Sulphur (wt.%) | 30.04 | 0.979 | 29.25 | 30.82 | Infrared Combustion |
Downloads
Certificate DataPack SDS NRAM (412 KB)Stock
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Pack SizePriceStock Level
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10g Sachet$6.8060,000 +
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50g Sachet$33.6011,000 +
Specifications
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CRM State:
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Matrix:
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Mineralisation:
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CRM Group(s):