OREAS 353c
SKU: 353c
OREAS 353c is a certified reference material (CRM) prepared from a Pb-Ag
concentrate sample sourced from South32 Ltd’s Cannington mine plant. The
stratabound, metasediment hosted (Broken Hill Type) deposit is located ~200 kms
south-east of Mount Isa in north-west Queensland, Australia. The major sulphides
occur as argentiferous galena and sphalerite with subordinate
magnetite-pyrrhotite and minor marcasite and
arsenopyrite-lollingite-chalcopyrite. OREAS 353c contains the following
certification:
Lead in 3 trials by classical wet chemistry titration
Silver by reduced charge (mostly 10-30g) fire assay with gravimetric
finish
4-acid digestion (HF-HNO3-HClO4-HCl) with ICP-OES and ICP-MS
finish
Peroxide fusion with ICP-OES and ICP-MS finish
Infrared combustion furnace for C and S
Homogeneity was confirmed using 12 x 15 g samples sent to a single
laboratory for borate fusion with XRF finish and Ag by ore grade 4-acid
digestion with ICP-OES finish. An Analysis of Variance (ANOVA) was performed to
compare within- and between-unit variances.
Specifications
- State: primary
- Matrix: sulphide
- Mineralisation: Broken Hill Type
- CRM Group: Zn-Pb-Ag sulphide ore, Concentrates
Certified Values
| Analyte | Certified Value | 1SD | 95% CL Low | 95% CL High | Method |
|---|---|---|---|---|---|
| Pb, Lead (wt.%) | 72.29 | 0.125 | 72.20 | 72.37 | Classical Wet Chemistry |
| Ag, Silver (wt.%) | 0.269 | 0.002 | 0.267 | 0.270 | Pb Fire Assay |
| Zn, Zinc (wt.%) | 2.79 | 0.104 | 2.72 | 2.87 | 4-Acid Digestion |
| Ag, Silver (wt.%) | 0.268 | 0.010 | 0.259 | 0.278 | 4-Acid Digestion |
| Al, Aluminium (wt.%) | 0.098 | 0.008 | 0.086 | 0.110 | 4-Acid Digestion |
| As, Arsenic (ppm) | 296 | 7 | 285 | 307 | 4-Acid Digestion |
| Ba, Barium (ppm) | 33.8 | 5.8 | 29.1 | 38.5 | 4-Acid Digestion |
| Be, Beryllium (ppm) | < 0.50 | IND | IND | IND | 4-Acid Digestion |
| Bi, Bismuth (ppm) | 113 | 4 | 109 | 117 | 4-Acid Digestion |
| Ca, Calcium (wt.%) | 0.329 | 0.010 | 0.316 | 0.343 | 4-Acid Digestion |
| Cd, Cadmium (ppm) | 156 | 10 | 149 | 163 | 4-Acid Digestion |
| Ce, Cerium (ppm) | 15.8 | 2.2 | 13.2 | 18.4 | 4-Acid Digestion |
| Co, Cobalt (ppm) | 18.4 | 0.85 | 17.3 | 19.5 | 4-Acid Digestion |
| Cr, Chromium (ppm) | 112 | 11 | 104 | 119 | 4-Acid Digestion |
| Cs, Caesium (ppm) | 0.15 | 0.02 | 0.11 | 0.19 | 4-Acid Digestion |
| Cu, Copper (wt.%) | 0.347 | 0.015 | 0.335 | 0.359 | 4-Acid Digestion |
| Fe, Iron (wt.%) | 2.88 | 0.115 | 2.79 | 2.97 | 4-Acid Digestion |
| Ga, Gallium (ppm) | 1.00 | 0.17 | 0.87 | 1.14 | 4-Acid Digestion |
| In, Indium (ppm) | 1.63 | 0.111 | 1.45 | 1.82 | 4-Acid Digestion |
| La, Lanthanum (ppm) | 9.89 | 1.16 | 8.46 | 11.31 | 4-Acid Digestion |
| Li, Lithium (ppm) | 1.41 | 0.17 | 1.10 | 1.71 | 4-Acid Digestion |
| Mg, Magnesium (wt.%) | 0.152 | 0.008 | 0.143 | 0.161 | 4-Acid Digestion |
| Mn, Manganese (wt.%) | 0.136 | 0.007 | 0.131 | 0.141 | 4-Acid Digestion |
| Mo, Molybdenum (ppm) | 9.95 | 1.26 | 8.90 | 11.00 | 4-Acid Digestion |
| Ni, Nickel (ppm) | 15.8 | 1.6 | 14.2 | 17.4 | 4-Acid Digestion |
| P, Phosphorus (wt.%) | 0.013 | 0.002 | 0.012 | 0.015 | 4-Acid Digestion |
| Pb, Lead (wt.%) | 70.09 | 5.084 | 64.43 | 75.75 | 4-Acid Digestion |
| S, Sulphur (wt.%) | 14.23 | 0.401 | 13.82 | 14.63 | 4-Acid Digestion |
| Sb, Antimony (wt.%) | 0.266 | 0.018 | 0.253 | 0.279 | 4-Acid Digestion |
| Sc, Scandium (ppm) | < 1.00 | IND | IND | IND | 4-Acid Digestion |
| Sn, Tin (ppm) | 12.5 | 2.3 | 10.2 | 14.9 | 4-Acid Digestion |
| Ta, Tantalum (ppm) | < 0.050 | IND | IND | IND | 4-Acid Digestion |
| Th, Thorium (ppm) | 0.41 | 0.038 | 0.35 | 0.48 | 4-Acid Digestion |
| Tl, Thallium (ppm) | 1.92 | 0.148 | 1.75 | 2.09 | 4-Acid Digestion |
| U, Uranium (ppm) | 1.05 | 0.102 | 0.93 | 1.16 | 4-Acid Digestion |
| V, Vanadium (ppm) | 5.02 | 0.61 | 4.48 | 5.57 | 4-Acid Digestion |
| Al, Aluminium (wt.%) | 0.100 | 0.010 | 0.085 | 0.115 | Peroxide Fusion ICP |
| As, Arsenic (ppm) | 292 | 17 | 273 | 311 | Peroxide Fusion ICP |
| Ba, Barium (ppm) | 38.6 | 4.5 | 33.0 | 44.3 | Peroxide Fusion ICP |
| Bi, Bismuth (ppm) | 111 | 5 | 105 | 118 | Peroxide Fusion ICP |
| Ca, Calcium (wt.%) | 0.337 | 0.029 | 0.300 | 0.374 | Peroxide Fusion ICP |
| Cd, Cadmium (ppm) | 154 | 8 | 144 | 165 | Peroxide Fusion ICP |
| Co, Cobalt (ppm) | 18.1 | 2.0 | 16.1 | 20.1 | Peroxide Fusion ICP |
| Cr, Chromium (ppm) | 117 | 23 | 94 | 141 | Peroxide Fusion ICP |
| Cu, Copper (wt.%) | 0.348 | 0.011 | 0.335 | 0.361 | Peroxide Fusion ICP |
| Er, Erbium (ppm) | 0.62 | 0.09 | 0.48 | 0.77 | Peroxide Fusion ICP |
| Fe, Iron (wt.%) | 2.95 | 0.078 | 2.84 | 3.06 | Peroxide Fusion ICP |
| Ga, Gallium (ppm) | 1.02 | 0.051 | 0.89 | 1.14 | Peroxide Fusion ICP |
| In, Indium (ppm) | 1.64 | 0.099 | 1.48 | 1.81 | Peroxide Fusion ICP |
| Mg, Magnesium (wt.%) | 0.156 | 0.007 | 0.146 | 0.166 | Peroxide Fusion ICP |
| Mn, Manganese (wt.%) | 0.137 | 0.004 | 0.132 | 0.143 | Peroxide Fusion ICP |
| Mo, Molybdenum (ppm) | 11.0 | 1.3 | 9.4 | 12.6 | Peroxide Fusion ICP |
| S, Sulphur (wt.%) | 14.69 | 0.545 | 14.16 | 15.22 | Peroxide Fusion ICP |
| Sb, Antimony (wt.%) | 0.280 | 0.022 | 0.258 | 0.301 | Peroxide Fusion ICP |
| Si, Silicon (wt.%) | 1.48 | 0.041 | 1.41 | 1.56 | Peroxide Fusion ICP |
| Sm, Samarium (ppm) | 1.42 | 0.26 | 1.14 | 1.70 | Peroxide Fusion ICP |
| Sr, Strontium (ppm) | < 10.0 | IND | IND | IND | Peroxide Fusion ICP |
| Tl, Thallium (ppm) | 2.02 | 0.103 | 1.84 | 2.20 | Peroxide Fusion ICP |
| U, Uranium (ppm) | 1.26 | 0.15 | 1.06 | 1.46 | Peroxide Fusion ICP |
| Y, Yttrium (ppm) | 7.79 | 1.37 | 6.73 | 8.85 | Peroxide Fusion ICP |
| Yb, Ytterbium (ppm) | 0.50 | 0.07 | 0.36 | 0.64 | Peroxide Fusion ICP |
| Zn, Zinc (wt.%) | 2.86 | 0.096 | 2.76 | 2.96 | Peroxide Fusion ICP |
| C, Carbon (wt.%) | 0.387 | 0.019 | 0.370 | 0.403 | Infrared Combustion |
| S, Sulphur (wt.%) | 14.03 | 0.463 | 13.66 | 14.41 | Infrared Combustion |
Product Specifications
Certified Reference Values
| Analyte | Certified Value | Uncertainty (1SD) | 95% Confidence Low | 95% Confidence High | Method |
|---|---|---|---|---|---|
| Ce - Cerium (ppm) | 15.8 | - | - | - | 4-Acid Digestion |
| La - Lanthanum (ppm) | 9.89 | - | - | - | 4-Acid Digestion |
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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