OREAS 903
oxide
argillaceous sandstone
sediment hosted
OREAS 903
SKU: 903
OREAS 903 contains 93 certified values and is a medium grade
transitional-oxide 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 (46 certified values)
Aqua regia digestion with ICP-OES and ICP-MS finish (46 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
Specifications
- State: oxide
- Matrix: argillaceous sandstone
- Mineralisation: sediment hosted
- CRM Group: Cu ore
Certified Values
| Analyte | Certified Value | 1SD | 95% CL Low | 95% CL High | Method |
|---|---|---|---|---|---|
| Cu, Copper (wt.%) | 0.652 | 0.020 | 0.642 | 0.661 | 4-Acid Digestion |
| Au, Gold (ppb) | < 5 | IND | IND | IND | Aqua Regia Digestion |
| Cu-Sol(H2SO4), Copper soluble (sulphuric) (wt.%) | 0.434 | 0.030 | 0.417 | 0.451 | Sulphuric Acid 5% Leach |
| Ag, Silver (ppm) | 0.432 | 0.051 | 0.406 | 0.458 | 4-Acid Digestion |
| Al, Aluminium (wt.%) | 5.89 | 0.279 | 5.75 | 6.03 | 4-Acid Digestion |
| As, Arsenic (ppm) | 49.7 | 3.77 | 48.0 | 51.3 | 4-Acid Digestion |
| Ba, Barium (ppm) | 197 | 9 | 193 | 202 | 4-Acid Digestion |
| Be, Beryllium (ppm) | 4.42 | 0.387 | 4.23 | 4.62 | 4-Acid Digestion |
| Bi, Bismuth (ppm) | 8.94 | 0.481 | 8.70 | 9.18 | 4-Acid Digestion |
| Ca, Calcium (wt.%) | 0.625 | 0.029 | 0.613 | 0.637 | 4-Acid Digestion |
| Cd, Cadmium (ppm) | 0.20 | 0.019 | 0.19 | 0.21 | 4-Acid Digestion |
| Ce, Cerium (ppm) | 82 | 5.6 | 79 | 86 | 4-Acid Digestion |
| Co, Cobalt (ppm) | 131 | 8 | 127 | 135 | 4-Acid Digestion |
| Cr, Chromium (ppm) | 73 | 4.6 | 70 | 75 | 4-Acid Digestion |
| Cs, Caesium (ppm) | 3.57 | 0.121 | 3.50 | 3.63 | 4-Acid Digestion |
| Fe, Iron (wt.%) | 4.16 | 0.179 | 4.07 | 4.25 | 4-Acid Digestion |
| Ga, Gallium (ppm) | 15.0 | 1.7 | 14.4 | 15.6 | 4-Acid Digestion |
| Hf, Hafnium (ppm) | 4.56 | 0.350 | 4.35 | 4.77 | 4-Acid Digestion |
| In, Indium (ppm) | 0.16 | 0.02 | 0.15 | 0.17 | 4-Acid Digestion |
| K, Potassium (wt.%) | 3.31 | 0.207 | 3.19 | 3.42 | 4-Acid Digestion |
| La, Lanthanum (ppm) | 40.2 | 4.02 | 38.0 | 42.4 | 4-Acid Digestion |
| Li, Lithium (ppm) | 18.3 | 0.72 | 18.0 | 18.7 | 4-Acid Digestion |
| Lu, Lutetium (ppm) | 0.36 | 0.04 | 0.34 | 0.39 | 4-Acid Digestion |
| Mg, Magnesium (wt.%) | 0.714 | 0.051 | 0.687 | 0.741 | 4-Acid Digestion |
| Mn, Manganese (wt.%) | 0.069 | 0.003 | 0.067 | 0.071 | 4-Acid Digestion |
| Mo, Molybdenum (ppm) | 4.32 | 0.335 | 4.17 | 4.47 | 4-Acid Digestion |
| Na, Sodium (wt.%) | 0.030 | 0.001 | 0.029 | 0.031 | 4-Acid Digestion |
| Ni, Nickel (ppm) | 54 | 4.7 | 52 | 56 | 4-Acid Digestion |
| P, Phosphorus (wt.%) | 0.107 | 0.009 | 0.102 | 0.112 | 4-Acid Digestion |
| Pb, Lead (ppm) | 11.3 | 1.7 | 10.4 | 12.1 | 4-Acid Digestion |
| Rb, Rubidium (ppm) | 137 | 19 | 126 | 148 | 4-Acid Digestion |
| S, Sulphur (wt.%) | 0.500 | 0.036 | 0.481 | 0.518 | 4-Acid Digestion |
| Sb, Antimony (ppm) | 1.57 | 0.141 | 1.49 | 1.65 | 4-Acid Digestion |
| Sc, Scandium (ppm) | 10.2 | 0.50 | 10.0 | 10.5 | 4-Acid Digestion |
| Se, Selenium (ppm) | 6.06 | 0.85 | 5.59 | 6.54 | 4-Acid Digestion |
| Sn, Tin (ppm) | 2.63 | 0.261 | 2.50 | 2.76 | 4-Acid Digestion |
| Sr, Strontium (ppm) | 77 | 3.7 | 75 | 79 | 4-Acid Digestion |
| Ta, Tantalum (ppm) | 0.54 | 0.08 | 0.48 | 0.59 | 4-Acid Digestion |
| Tb, Terbium (ppm) | 0.83 | 0.09 | 0.76 | 0.91 | 4-Acid Digestion |
| Th, Thorium (ppm) | 13.6 | 0.71 | 13.2 | 14.1 | 4-Acid Digestion |
| Ti, Titanium (wt.%) | 0.192 | 0.037 | 0.171 | 0.214 | 4-Acid Digestion |
| Tl, Thallium (ppm) | 0.62 | 0.041 | 0.60 | 0.64 | 4-Acid Digestion |
| U, Uranium (ppm) | 7.58 | 0.584 | 7.26 | 7.90 | 4-Acid Digestion |
| V, Vanadium (ppm) | 74 | 2.3 | 73 | 75 | 4-Acid Digestion |
| Y, Yttrium (ppm) | 22.5 | 2.3 | 21.2 | 23.7 | 4-Acid Digestion |
| Yb, Ytterbium (ppm) | 2.36 | 0.163 | 2.23 | 2.50 | 4-Acid Digestion |
| Zn, Zinc (ppm) | 24.3 | 2.24 | 23.1 | 25.4 | 4-Acid Digestion |
| Zr, Zirconium (ppm) | 152 | 11 | 146 | 158 | 4-Acid Digestion |
| Ag, Silver (ppm) | 0.349 | 0.038 | 0.331 | 0.366 | Aqua Regia Digestion |
| Al, Aluminium (wt.%) | 0.538 | 0.036 | 0.516 | 0.559 | Aqua Regia Digestion |
| As, Arsenic (ppm) | 47.5 | 2.12 | 46.6 | 48.4 | Aqua Regia Digestion |
| Ba, Barium (ppm) | 63 | 4.3 | 60 | 65 | Aqua Regia Digestion |
| Be, Beryllium (ppm) | 2.69 | 0.268 | 2.54 | 2.85 | Aqua Regia Digestion |
| Bi, Bismuth (ppm) | 8.76 | 0.771 | 8.36 | 9.16 | Aqua Regia Digestion |
| Ca, Calcium (wt.%) | 0.633 | 0.030 | 0.618 | 0.649 | Aqua Regia Digestion |
| Cd, Cadmium (ppm) | 0.21 | 0.012 | 0.20 | 0.21 | Aqua Regia Digestion |
| Ce, Cerium (ppm) | 46.2 | 2.56 | 44.5 | 48.0 | Aqua Regia Digestion |
| Co, Cobalt (ppm) | 131 | 7 | 127 | 134 | Aqua Regia Digestion |
| Cr, Chromium (ppm) | 26.1 | 1.81 | 25.2 | 27.1 | Aqua Regia Digestion |
| Cs, Caesium (ppm) | 0.28 | 0.04 | 0.25 | 0.31 | Aqua Regia Digestion |
| Cu, Copper (wt.%) | 0.671 | 0.020 | 0.663 | 0.679 | Aqua Regia Digestion |
| Fe, Iron (wt.%) | 3.94 | 0.266 | 3.80 | 4.08 | Aqua Regia Digestion |
| Ga, Gallium (ppm) | 1.58 | 0.22 | 1.42 | 1.73 | Aqua Regia Digestion |
| Ge, Germanium (ppm) | 0.098 | 0.015 | 0.087 | 0.109 | Aqua Regia Digestion |
| Hf, Hafnium (ppm) | 0.61 | 0.052 | 0.57 | 0.65 | Aqua Regia Digestion |
| In, Indium (ppm) | 0.11 | 0.010 | 0.11 | 0.12 | Aqua Regia Digestion |
| K, Potassium (wt.%) | 0.331 | 0.029 | 0.314 | 0.348 | Aqua Regia Digestion |
| La, Lanthanum (ppm) | 22.8 | 3.8 | 20.7 | 24.9 | Aqua Regia Digestion |
| Lu, Lutetium (ppm) | 0.099 | 0.010 | 0.089 | 0.109 | Aqua Regia Digestion |
| Mg, Magnesium (wt.%) | 0.234 | 0.030 | 0.217 | 0.251 | Aqua Regia Digestion |
| Mn, Manganese (wt.%) | 0.071 | 0.004 | 0.069 | 0.073 | Aqua Regia Digestion |
| Mo, Molybdenum (ppm) | 4.26 | 0.47 | 4.01 | 4.50 | Aqua Regia Digestion |
| Ni, Nickel (ppm) | 48.7 | 3.06 | 47.1 | 50.3 | Aqua Regia Digestion |
| P, Phosphorus (wt.%) | 0.103 | 0.005 | 0.100 | 0.105 | Aqua Regia Digestion |
| Pb, Lead (ppm) | 8.95 | 0.91 | 8.49 | 9.41 | Aqua Regia Digestion |
| Rb, Rubidium (ppm) | 12.6 | 1.13 | 11.9 | 13.3 | Aqua Regia Digestion |
| S, Sulphur (wt.%) | 0.501 | 0.036 | 0.481 | 0.521 | Aqua Regia Digestion |
| Sb, Antimony (ppm) | 0.96 | 0.11 | 0.89 | 1.02 | Aqua Regia Digestion |
| Sc, Scandium (ppm) | 3.15 | 0.211 | 3.03 | 3.27 | Aqua Regia Digestion |
| Se, Selenium (ppm) | 5.34 | 0.57 | 5.04 | 5.64 | Aqua Regia Digestion |
| Sr, Strontium (ppm) | 17.7 | 1.36 | 16.9 | 18.4 | Aqua Regia Digestion |
| Tb, Terbium (ppm) | 0.47 | 0.05 | 0.42 | 0.52 | Aqua Regia Digestion |
| Te, Tellurium (ppm) | 0.034 | 0.006 | 0.031 | 0.037 | Aqua Regia Digestion |
| Th, Thorium (ppm) | 6.36 | 0.563 | 6.03 | 6.68 | Aqua Regia Digestion |
| Ti, Titanium (wt.%) | 0.008 | 0.001 | 0.007 | 0.009 | Aqua Regia Digestion |
| Tl, Thallium (ppm) | 0.14 | 0.02 | 0.13 | 0.15 | Aqua Regia Digestion |
| U, Uranium (ppm) | 3.24 | 0.293 | 3.06 | 3.41 | Aqua Regia Digestion |
| V, Vanadium (ppm) | 13.3 | 0.72 | 12.9 | 13.7 | Aqua Regia Digestion |
| W, Tungsten (ppm) | 0.53 | 0.08 | 0.48 | 0.58 | Aqua Regia Digestion |
| Y, Yttrium (ppm) | 9.23 | 0.654 | 8.83 | 9.62 | Aqua Regia Digestion |
| Yb, Ytterbium (ppm) | 0.69 | 0.07 | 0.62 | 0.76 | Aqua Regia Digestion |
| Zn, Zinc (ppm) | 21.3 | 1.46 | 20.6 | 22.1 | Aqua Regia Digestion |
| Zr, Zirconium (ppm) | 18.2 | 1.73 | 16.9 | 19.4 | Aqua Regia Digestion |
Product Specifications
State
oxide
Matrix
argillaceous sandstone
Mineralisation
sediment hosted
Availability
available
Certified Reference Values
| Analyte | Certified Value | Uncertainty (1SD) | 95% Confidence Low | 95% Confidence High | Method |
|---|---|---|---|---|---|
| Ce - Cerium (ppm) | 82 | - | - | - | 4-Acid Digestion |
| La - Lanthanum (ppm) | 40.2 | - | - | - | 4-Acid Digestion |
| Lu - Lutetium (ppm) | 0.36 | - | - | - | 4-Acid Digestion |
| Tb - Terbium (ppm) | 0.83 | - | - | - | 4-Acid Digestion |
| Y - Yttrium (ppm) | 22.5 | - | - | - | 4-Acid Digestion |
| Yb - Ytterbium (ppm) | 2.36 | - | - | - | 4-Acid Digestion |
| Ag - Silver (ppm) | 0.349 | - | - | - | Aqua Regia |
| As - Arsenic (ppm) | 47.5 | - | - | - | Aqua Regia |
| Bi - Bismuth (ppm) | 8.76 | - | - | - | Aqua Regia |
| Cd - Cadmium (ppm) | 0.21 | - | - | - | Aqua Regia |
| Co - Cobalt (ppm) | 131 | - | - | - | Aqua Regia |
| Mo - Molybdenum (ppm) | 4.26 | - | - | - | Aqua Regia |
| Ni - Nickel (ppm) | 48.7 | - | - | - | Aqua Regia |
| Pb - Lead (ppm) | 8.95 | - | - | - | Aqua Regia |
| Sb - Antimony (ppm) | 0.96 | - | - | - | Aqua Regia |
| Se - Selenium (ppm) | 5.34 | - | - | - | Aqua Regia |
| Tl - Thallium (ppm) | 0.14 | - | - | - | Aqua Regia |
| Zn - Zinc (ppm) | 21.3 | - | - | - | Aqua Regia |
SD = Standard Deviation | CL = 95% Confidence Limits
Methods: AR = Aqua Regia, 4-Acid = 4-Acid Digestion, LBF = Lithium Borate Fusion, FA/AAS = Fire Assay with Atomic Absorption, LECO = LECO Combustion Analysis
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