OREAS 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.

Analyte Certified Value 1SD Expanded Uncertainty Low Expanded Uncertainty 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
Downloads
Certificate DataPack SDS NRAM (226 KB)
Add to Cart
Stock
  • Pack Size
    Price
    Stock Level
  • 10g Sachet
    $7.10
    35,000 +
  • 50g Sachet
    $34.90
    8,100 +
Specifications