| Description: OREAS 902 contains 86 certified values and is a low grade transitional copper ore certified reference material. It is one of a suite of four transitional to oxide copper (-gold) CRMs prepared from samples sourced from CST's Lady Annie Mine, located 120 kms northwest of Mount Isa, Queensland, Australia. Mineralisation at Lady Annie is hosted in dolomitic, carbonaceous and argillaceous sandstones and siltstones. The primary copper sulphide mineralisation at depth is dominated by chalcocite and chalcopyrite and appears to be structurally controlled, being commonly associated with fault-related silicification. Nineteen commercial analytical laboratories participated in the program. The following methods were employed: - Four acid digestion with ICP-OES and ICP-MS finish (45 certified values)
- Aqua regia digestion with ICP-OES and ICP-MS finish (40 certified values)
- Soluble Cu via 5% H2SO4 acid leach with AAS or ICP-OES finish
- Gold via fire assay with ICP-OES, ICP-MS, AAS or solvent extraction AAS finish
Download Certificate OREAS902 Download DataPack OREAS902 | Analyte | Certified Value | 1SD | 95% CI Low | 95% CI High | Method |
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| Ag, Silver (ppm) | 0.343 | 0.043 | 0.322 | 0.363 | 4-Acid Digestion | | Al, Aluminium (wt.%) | 4.74 | 0.219 | 4.64 | 4.84 | 4-Acid Digestion | | As, Arsenic (ppm) | 574 | 25 | 562 | 586 | 4-Acid Digestion | | Ba, Barium (ppm) | 170 | 6 | 167 | 173 | 4-Acid Digestion | | Be, Beryllium (ppm) | 2.23 | 0.195 | 2.13 | 2.33 | 4-Acid Digestion | | Bi, Bismuth (ppm) | 8.49 | 0.362 | 8.33 | 8.66 | 4-Acid Digestion | | Ca, Calcium (wt.%) | 4.05 | 0.142 | 3.98 | 4.13 | 4-Acid Digestion | | Ce, Cerium (ppm) | 75 | 3.9 | 72 | 77 | 4-Acid Digestion | | Co, Cobalt (ppm) | 926 | 28 | 912 | 940 | 4-Acid Digestion | | Cr, Chromium (ppm) | 51 | 6 | 47 | 54 | 4-Acid Digestion | | Cs, Caesium (ppm) | 2.88 | 0.096 | 2.82 | 2.93 | 4-Acid Digestion | | Cu, Copper (wt.%) | 0.301 | 0.008 | 0.298 | 0.304 | 4-Acid Digestion | | Fe, Iron (wt.%) | 3.19 | 0.144 | 3.12 | 3.27 | 4-Acid Digestion | | Ga, Gallium (ppm) | 11.7 | 0.63 | 11.3 | 12.1 | 4-Acid Digestion | | Ge, Germanium (ppm) | 0.18 | 0.03 | 0.15 | 0.21 | 4-Acid Digestion | | Hf, Hafnium (ppm) | 4.43 | 0.316 | 4.24 | 4.62 | 4-Acid Digestion | | In, Indium (ppm) | 0.25 | 0.03 | 0.23 | 0.27 | 4-Acid Digestion | | K, Potassium (wt.%) | 3.21 | 0.168 | 3.13 | 3.3 | 4-Acid Digestion | | La, Lanthanum (ppm) | 36.7 | 2.41 | 35.5 | 37.9 | 4-Acid Digestion | | Li, Lithium (ppm) | 9.77 | 0.636 | 9.44 | 10.11 | 4-Acid Digestion | | Lu, Lutetium (ppm) | 0.3 | 0.03 | 0.28 | 0.33 | 4-Acid Digestion | | Mg, Magnesium (wt.%) | 2.48 | 0.096 | 2.43 | 2.52 | 4-Acid Digestion | | Mn, Manganese (wt.%) | 0.046 | 0.003 | 0.044 | 0.047 | 4-Acid Digestion | | Mo, Molybdenum (ppm) | 12.2 | 0.65 | 11.9 | 12.5 | 4-Acid Digestion | | Na, Sodium (wt.%) | 0.044 | 0.007 | 0.041 | 0.048 | 4-Acid Digestion | | Ni, Nickel (ppm) | 164 | 6 | 161 | 167 | 4-Acid Digestion | | P, Phosphorus (wt.%) | 0.069 | 0.006 | 0.066 | 0.073 | 4-Acid Digestion | | Pb, Lead (ppm) | 13.3 | 1.4 | 12.6 | 14 | 4-Acid Digestion | | Rb, Rubidium (ppm) | 109 | 11 | 103 | 115 | 4-Acid Digestion | | Re, Rhenium (ppm) | 0.006 | 0.001 | 0.006 | 0.007 | 4-Acid Digestion | | S, Sulphur (wt.%) | 1.76 | 0.064 | 1.72 | 1.79 | 4-Acid Digestion | | Sb, Antimony (ppm) | 1.65 | 0.086 | 1.61 | 1.69 | 4-Acid Digestion | | Sc, Scandium (ppm) | 6.9 | 0.585 | 6.63 | 7.17 | 4-Acid Digestion | | Se, Selenium (ppm) | 2.41 | 0.45 | 2.1 | 2.72 | 4-Acid Digestion | | Sn, Tin (ppm) | 2.05 | 0.185 | 1.95 | 2.15 | 4-Acid Digestion | | Sr, Strontium (ppm) | 28.4 | 1.7 | 27.6 | 29.2 | 4-Acid Digestion | | Tb, Terbium (ppm) | 0.58 | 0.07 | 0.52 | 0.64 | 4-Acid Digestion | | Th, Thorium (ppm) | 11.3 | 0.67 | 10.9 | 11.7 | 4-Acid Digestion | | Tl, Thallium (ppm) | 0.7 | 0.042 | 0.68 | 0.73 | 4-Acid Digestion | | U, Uranium (ppm) | 6.47 | 0.316 | 6.28 | 6.65 | 4-Acid Digestion | | V, Vanadium (ppm) | 54 | 2.6 | 53 | 55 | 4-Acid Digestion | | W, Tungsten (ppm) | 3.83 | 0.42 | 3.6 | 4.06 | 4-Acid Digestion | | Y, Yttrium (ppm) | 18.1 | 1.41 | 17.4 | 18.9 | 4-Acid Digestion | | Yb, Ytterbium (ppm) | 1.94 | 0.128 | 1.83 | 2.04 | 4-Acid Digestion | | Zr, Zirconium (ppm) | 150 | 11 | 144 | 155 | 4-Acid Digestion | | Ag, Silver (ppm) | 0.284 | 0.031 | 0.271 | 0.297 | Aqua Regia Digestion | | Al, Aluminium (wt.%) | 0.535 | 0.056 | 0.501 | 0.569 | Aqua Regia Digestion | | As, Arsenic (ppm) | 569 | 33 | 555 | 584 | Aqua Regia Digestion | | Au, Gold (ppb) | 10 | IND | IND | IND | Aqua Regia Digestion | | Be, Beryllium (ppm) | 0.99 | 0.074 | 0.95 | 1.04 | Aqua Regia Digestion | | Bi, Bismuth (ppm) | 8.43 | 0.766 | 8.05 | 8.81 | Aqua Regia Digestion | | Ca, Calcium (wt.%) | 4.19 | 0.286 | 4.05 | 4.33 | Aqua Regia Digestion | | Ce, Cerium (ppm) | 28.3 | 3.7 | 25.8 | 30.8 | Aqua Regia Digestion | | Co, Cobalt (ppm) | 908 | 67 | 875 | 941 | Aqua Regia Digestion | | Cr, Chromium (ppm) | 24.1 | 2.8 | 22.8 | 25.4 | Aqua Regia Digestion | | Cs, Caesium (ppm) | 0.3 | 0.03 | 0.28 | 0.32 | Aqua Regia Digestion | | Cu, Copper (wt.%) | 0.308 | 0.012 | 0.303 | 0.314 | Aqua Regia Digestion | | Fe, Iron (wt.%) | 3.04 | 0.176 | 2.94 | 3.13 | Aqua Regia Digestion | | Ga, Gallium (ppm) | 1.55 | 0.105 | 1.48 | 1.63 | Aqua Regia Digestion | | Hf, Hafnium (ppm) | 0.54 | 0.047 | 0.51 | 0.57 | Aqua Regia Digestion | | In, Indium (ppm) | 0.22 | 0.018 | 0.2 | 0.23 | Aqua Regia Digestion | | K, Potassium (wt.%) | 0.268 | 0.032 | 0.249 | 0.287 | Aqua Regia Digestion | | Li, Lithium (ppm) | 3.67 | 0.61 | 3.25 | 4.08 | Aqua Regia Digestion | | Lu, Lutetium (ppm) | 0.088 | 0.01 | 0.078 | 0.099 | Aqua Regia Digestion | | Mg, Magnesium (wt.%) | 2.24 | 0.12 | 2.18 | 2.31 | Aqua Regia Digestion | | Mn, Manganese (wt.%) | 0.046 | 0.002 | 0.045 | 0.048 | Aqua Regia Digestion | | Mo, Molybdenum (ppm) | 12.6 | 0.92 | 12.1 | 13.1 | Aqua Regia Digestion | | Ni, Nickel (ppm) | 159 | 9 | 154 | 164 | Aqua Regia Digestion | | P, Phosphorus (wt.%) | 0.067 | 0.003 | 0.066 | 0.069 | Aqua Regia Digestion | | Pb, Lead (ppm) | 10.7 | 0.98 | 10.3 | 11.2 | Aqua Regia Digestion | | Rb, Rubidium (ppm) | 9.93 | 1.06 | 9.25 | 10.62 | Aqua Regia Digestion | | Re, Rhenium (ppm) | 0.006 | 0.001 | 0.006 | 0.007 | Aqua Regia Digestion | | S, Sulphur (wt.%) | 1.78 | 0.142 | 1.7 | 1.85 | Aqua Regia Digestion | | Sb, Antimony (ppm) | 0.89 | 0.1 | 0.83 | 0.95 | Aqua Regia Digestion | | Sc, Scandium (ppm) | 2.93 | 0.36 | 2.76 | 3.1 | Aqua Regia Digestion | | Se, Selenium (ppm) | 1.94 | 0.37 | 1.74 | 2.15 | Aqua Regia Digestion | | Sr, Strontium (ppm) | 21.8 | 1.55 | 21 | 22.6 | Aqua Regia Digestion | | Tb, Terbium (ppm) | 0.31 | 0.03 | 0.28 | 0.35 | Aqua Regia Digestion | | Th, Thorium (ppm) | 5.05 | 0.472 | 4.78 | 5.32 | Aqua Regia Digestion | | Tl, Thallium (ppm) | 0.24 | 0.03 | 0.22 | 0.26 | Aqua Regia Digestion | | U, Uranium (ppm) | 2.2 | 0.26 | 2.05 | 2.36 | Aqua Regia Digestion | | V, Vanadium (ppm) | 8.79 | 1.54 | 7.88 | 9.7 | Aqua Regia Digestion | | Y, Yttrium (ppm) | 7.95 | 0.684 | 7.54 | 8.36 | Aqua Regia Digestion | | Yb, Ytterbium (ppm) | 0.61 | 0.054 | 0.56 | 0.66 | Aqua Regia Digestion | | Zr, Zirconium (ppm) | 15 | 2.5 | 13.4 | 16.5 | Aqua Regia Digestion | | Cu-Sol(H2SO4), Copper soluble (sulphuric) (wt.%) | 0.111 | 0.011 | 0.105 | 0.118 | Sulphuric Acid 5% Leach |
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