OREAS 164

OREAS 164 is a medium grade copper ore certified reference material (CRM) prepared and certified by Ore Research & Exploration Pth Ltd. The material was sourced from Xstrata’s Mt Isa copper ore deposits located near the township of Mt Isa in north-west Queensland. The ore deposits are hosted by brecciated siliceous and dolomitic rock masses within the Urquhart Shale comprising complex and dissociated veins with chalcopyrite, pyrite and pyrrhotite with grades of 3-4% copper. OREAS 164 is one of a suite of seven CRMs characterised for Cu, Fe, S, CaO, MgO, Al2O3, SiO2, Ag, Pb, Zn and Co by both sodium peroxide fusion ICP and 4-acid ICP methods.

Analyte Certified Value 1SD 95% Confidence Low 95% Confidence High Method
Cu, Copper (wt.%) 2.22 0.090 2.15 2.28 Peroxide Fusion ICP
Fe, Iron (wt.%) 6.88 0.320 6.65 7.12 Peroxide Fusion ICP
Co, Cobalt (ppm) 168 8 162 174 4-Acid Digestion
Ag, Silver (ppm) < 5.00 IND IND IND Peroxide Fusion ICP
Al2O3, Aluminium(III) oxide (wt.%) 2.05 0.050 2.02 2.08 Peroxide Fusion ICP
CaO, Calcium oxide (wt.%) 0.401 0.010 0.394 0.407 Peroxide Fusion ICP
Co, Cobalt (ppm) 167 6 164 169 Peroxide Fusion ICP
MgO, Magnesium oxide (wt.%) 3.07 0.140 2.97 3.17 Peroxide Fusion ICP
Pb, Lead (ppm) 199 12 187 211 Peroxide Fusion ICP
S, Sulphur (wt.%) 5.98 0.120 5.90 6.07 Peroxide Fusion ICP
SiO2, Silicon dioxide (wt.%) 77.90 1.500 77.00 78.70 Peroxide Fusion ICP
Zn, Zinc (ppm) 47.0 14.0 32.0 62.0 Peroxide Fusion ICP
Ag, Silver (ppm) 2.94 0.160 2.83 3.06 4-Acid Digestion
Al2O3, Aluminium(III) oxide (wt.%) 2.07 0.070 2.01 2.13 4-Acid Digestion
CaO, Calcium oxide (wt.%) 0.393 0.014 0.384 0.403 4-Acid Digestion
Cu, Copper (wt.%) 2.25 0.080 2.20 2.31 4-Acid Digestion
Fe, Iron (wt.%) 6.80 0.190 6.67 6.94 4-Acid Digestion
MgO, Magnesium oxide (wt.%) 3.07 0.100 2.99 3.15 4-Acid Digestion
Pb, Lead (ppm) 214 14 204 224 4-Acid Digestion
S, Sulphur (wt.%) 6.20 0.400 5.90 6.60 4-Acid Digestion
Zn, Zinc (ppm) 45.0 7.0 39.0 51.0 4-Acid Digestion
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  • 10g Sachet
    $3.15
Specifications
CRM Group