OREAS 502c

OREAS 502c was prepared from a blend of porphyry copper-gold ore, barren granodiorite and a minor quantity of Cu-Mo concentrate. The ore was sourced from the Ridgeway underground mine located in the Cadia Valley Operations (CVO) situated in central western New South Wales, Australia. The barren I-type hornblende-bearing granodiorite was sourced from the Late Devonian Lysterfield granodiorite complex located in eastern Melbourne, Australia.

Thirty commercial analytical laboratories participated in the program to characterise the elements reported in Tables 1 to 4. The following methods were employed: 

  • Gold via 25-40g fire assay with AAS (18 labs) or ICP-OES (12 labs) finish;
  • Gold via 15-50g aqua regia digestion with ICP-MS (13 labs), ICP-OES (2 labs) or AAS (6 labs) finish;
  • Four acid digestion for full elemental suite ICP-OES and ICP-MS (30 laboratories);
  • Aqua regia digestion for full elemental suite ICP-OES and ICP-MS (25 laboratories);
  • Instrumental neutron activation analysis for Au on 1g subsamples to confirm homogeneity (1 laboratory).
Analyte Certified Value 1SD 95% Confidence Low 95% Confidence High Method
Au, Gold (ppm) 0.488 0.015 0.483 0.492 Pb Fire Assay
Cu, Copper (wt.%) 0.783 0.022 0.775 0.790 4-Acid Digestion
Mo, Molybdenum (ppm) 226 12 222 231 4-Acid Digestion
Ag, Silver (ppm) 0.779 0.076 0.742 0.816 4-Acid Digestion
Al, Aluminium (wt.%) 7.37 0.459 7.20 7.53 4-Acid Digestion
As, Arsenic (ppm) 57 4.0 56 59 4-Acid Digestion
Ba, Barium (ppm) 1028 49 1009 1047 4-Acid Digestion
Be, Beryllium (ppm) 2.75 0.191 2.67 2.82 4-Acid Digestion
Bi, Bismuth (ppm) 0.67 0.040 0.65 0.69 4-Acid Digestion
Ca, Calcium (wt.%) 2.61 0.149 2.55 2.66 4-Acid Digestion
Cd, Cadmium (ppm) 0.35 0.04 0.32 0.37 4-Acid Digestion
Ce, Cerium (ppm) 67 3.0 66 69 4-Acid Digestion
Co, Cobalt (ppm) 14.4 0.60 14.1 14.6 4-Acid Digestion
Cr, Chromium (ppm) 68 5.1 66 70 4-Acid Digestion
Cs, Caesium (ppm) 10.8 0.38 10.6 11.0 4-Acid Digestion
Dy, Dysprosium (ppm) 4.45 0.319 4.23 4.68 4-Acid Digestion
Er, Erbium (ppm) 2.49 0.147 2.39 2.60 4-Acid Digestion
Eu, Europium (ppm) 1.36 0.14 1.25 1.47 4-Acid Digestion
Fe, Iron (wt.%) 4.92 0.222 4.84 4.99 4-Acid Digestion
Ga, Gallium (ppm) 18.5 0.63 18.3 18.8 4-Acid Digestion
Gd, Gadolinium (ppm) 4.94 0.492 4.61 5.27 4-Acid Digestion
Hf, Hafnium (ppm) 2.48 0.135 2.42 2.53 4-Acid Digestion
Ho, Holmium (ppm) 0.88 0.041 0.85 0.91 4-Acid Digestion
In, Indium (ppm) 0.089 0.004 0.088 0.091 4-Acid Digestion
K, Potassium (wt.%) 3.17 0.156 3.11 3.23 4-Acid Digestion
La, Lanthanum (ppm) 33.1 2.32 32.3 33.9 4-Acid Digestion
Li, Lithium (ppm) 32.2 1.85 31.6 32.8 4-Acid Digestion
Lu, Lutetium (ppm) 0.35 0.020 0.34 0.36 4-Acid Digestion
Mg, Magnesium (wt.%) 1.50 0.088 1.47 1.53 4-Acid Digestion
Mn, Manganese (wt.%) 0.053 0.003 0.052 0.054 4-Acid Digestion
Na, Sodium (wt.%) 1.98 0.093 1.95 2.02 4-Acid Digestion
Nb, Niobium (ppm) 17.5 0.97 17.0 17.9 4-Acid Digestion
Nd, Neodymium (ppm) 29.4 1.66 28.2 30.6 4-Acid Digestion
Ni, Nickel (ppm) 38.1 2.77 37.2 39.0 4-Acid Digestion
P, Phosphorus (wt.%) 0.099 0.005 0.097 0.101 4-Acid Digestion
Pb, Lead (ppm) 23.5 1.46 22.9 24.0 4-Acid Digestion
Pr, Praseodymium (ppm) 7.66 0.263 7.48 7.83 4-Acid Digestion
Rb, Rubidium (ppm) 187 8 184 190 4-Acid Digestion
Re, Rhenium (ppb) 5 1 4 5 4-Acid Digestion
S, Sulphur (wt.%) 0.826 0.040 0.811 0.841 4-Acid Digestion
Sb, Antimony (ppm) 6.37 0.378 6.23 6.52 4-Acid Digestion
Sc, Scandium (ppm) 12.9 1.3 12.3 13.5 4-Acid Digestion
Se, Selenium (ppm) 3.40 0.70 3.14 3.66 4-Acid Digestion
Sm, Samarium (ppm) 5.58 0.312 5.36 5.79 4-Acid Digestion
Sn, Tin (ppm) 3.40 0.125 3.37 3.43 4-Acid Digestion
Sr, Strontium (ppm) 327 12 323 331 4-Acid Digestion
Ta, Tantalum (ppm) 1.24 0.115 1.17 1.30 4-Acid Digestion
Tb, Terbium (ppm) 0.76 0.043 0.74 0.79 4-Acid Digestion
Te, Tellurium (ppm) 0.46 0.05 0.44 0.48 4-Acid Digestion
Th, Thorium (ppm) 17.6 1.39 17.1 18.2 4-Acid Digestion
Ti, Titanium (wt.%) 0.460 0.023 0.451 0.469 4-Acid Digestion
Tl, Thallium (ppm) 0.90 0.066 0.87 0.93 4-Acid Digestion
Tm, Thulium (ppm) 0.35 0.024 0.33 0.37 4-Acid Digestion
U, Uranium (ppm) 4.82 0.436 4.65 5.00 4-Acid Digestion
V, Vanadium (ppm) 120 6 118 122 4-Acid Digestion
W, Tungsten (ppm) 4.53 0.46 4.42 4.64 4-Acid Digestion
Y, Yttrium (ppm) 24.1 1.45 23.5 24.6 4-Acid Digestion
Yb, Ytterbium (ppm) 2.31 0.27 2.16 2.46 4-Acid Digestion
Zn, Zinc (ppm) 109 5 107 111 4-Acid Digestion
Zr, Zirconium (ppm) 78 6.3 76 81 4-Acid Digestion
Ag, Silver (ppm) 0.796 0.053 0.767 0.825 Aqua Regia Digestion
Al, Aluminium (wt.%) 2.07 0.107 2.02 2.11 Aqua Regia Digestion
As, Arsenic (ppm) 59 3.5 57 60 Aqua Regia Digestion
Au, Gold (ppm) 0.477 0.018 0.470 0.485 Aqua Regia Digestion
Ba, Barium (ppm) 383 58 355 411 Aqua Regia Digestion
Be, Beryllium (ppm) 0.53 0.07 0.47 0.59 Aqua Regia Digestion
Bi, Bismuth (ppm) 0.68 0.037 0.66 0.70 Aqua Regia Digestion
Ca, Calcium (wt.%) 1.09 0.067 1.06 1.12 Aqua Regia Digestion
Ce, Cerium (ppm) 59 3.2 58 61 Aqua Regia Digestion
Co, Cobalt (ppm) 13.5 0.48 13.3 13.7 Aqua Regia Digestion
Cr, Chromium (ppm) 66 4.1 64 68 Aqua Regia Digestion
Cs, Caesium (ppm) 9.02 0.435 8.81 9.23 Aqua Regia Digestion
Cu, Copper (wt.%) 0.779 0.017 0.774 0.785 Aqua Regia Digestion
Dy, Dysprosium (ppm) 3.19 0.245 2.92 3.45 Aqua Regia Digestion
Er, Erbium (ppm) 1.66 0.25 1.32 2.00 Aqua Regia Digestion
Fe, Iron (wt.%) 4.45 0.169 4.38 4.52 Aqua Regia Digestion
Ga, Gallium (ppm) 8.67 0.567 8.38 8.95 Aqua Regia Digestion
Gd, Gadolinium (ppm) 3.82 0.43 3.39 4.25 Aqua Regia Digestion
Hf, Hafnium (ppm) 0.41 0.022 0.39 0.42 Aqua Regia Digestion
Ho, Holmium (ppm) 0.60 0.08 0.50 0.71 Aqua Regia Digestion
In, Indium (ppm) 0.061 0.005 0.057 0.066 Aqua Regia Digestion
K, Potassium (wt.%) 1.07 0.054 1.05 1.10 Aqua Regia Digestion
La, Lanthanum (ppm) 29.4 2.38 28.3 30.5 Aqua Regia Digestion
Li, Lithium (ppm) 30.9 1.45 30.3 31.5 Aqua Regia Digestion
Lu, Lutetium (ppm) 0.22 0.011 0.21 0.23 Aqua Regia Digestion
Mg, Magnesium (wt.%) 1.21 0.041 1.20 1.23 Aqua Regia Digestion
Mn, Manganese (wt.%) 0.038 0.002 0.038 0.039 Aqua Regia Digestion
Mo, Molybdenum (ppm) 223 12 218 228 Aqua Regia Digestion
Na, Sodium (wt.%) 0.192 0.021 0.181 0.202 Aqua Regia Digestion
Nd, Neodymium (ppm) 23.2 2.22 20.8 25.7 Aqua Regia Digestion
Ni, Nickel (ppm) 36.4 2.27 35.5 37.2 Aqua Regia Digestion
P, Phosphorus (wt.%) 0.096 0.004 0.094 0.098 Aqua Regia Digestion
Pb, Lead (ppm) 11.1 0.90 10.7 11.5 Aqua Regia Digestion
Pr, Praseodymium (ppm) 6.63 0.80 5.82 7.43 Aqua Regia Digestion
Rb, Rubidium (ppm) 124 5 122 127 Aqua Regia Digestion
Re, Rhenium (ppb) 4 1 3 4 Aqua Regia Digestion
S, Sulphur (wt.%) 0.821 0.040 0.803 0.839 Aqua Regia Digestion
Sb, Antimony (ppm) 4.78 0.91 4.35 5.21 Aqua Regia Digestion
Sc, Scandium (ppm) 7.28 0.531 7.05 7.51 Aqua Regia Digestion
Sm, Samarium (ppm) 4.34 0.211 4.08 4.60 Aqua Regia Digestion
Sn, Tin (ppm) 2.71 0.220 2.59 2.83 Aqua Regia Digestion
Sr, Strontium (ppm) 66 5.7 64 69 Aqua Regia Digestion
Ta, Tantalum (ppm) 0.009 0.002 0.008 0.010 Aqua Regia Digestion
Tb, Terbium (ppm) 0.58 0.030 0.55 0.61 Aqua Regia Digestion
Te, Tellurium (ppm) 0.47 0.05 0.45 0.49 Aqua Regia Digestion
Th, Thorium (ppm) 17.6 0.91 17.1 18.0 Aqua Regia Digestion
Ti, Titanium (wt.%) 0.340 0.012 0.335 0.345 Aqua Regia Digestion
Tl, Thallium (ppm) 0.67 0.053 0.64 0.70 Aqua Regia Digestion
U, Uranium (ppm) 4.53 0.327 4.37 4.68 Aqua Regia Digestion
V, Vanadium (ppm) 110 4 109 112 Aqua Regia Digestion
W, Tungsten (ppm) 2.98 0.49 2.75 3.21 Aqua Regia Digestion
Y, Yttrium (ppm) 16.1 0.94 15.6 16.6 Aqua Regia Digestion
Yb, Ytterbium (ppm) 1.51 0.053 1.48 1.54 Aqua Regia Digestion
Zn, Zinc (ppm) 102 5 100 104 Aqua Regia Digestion
Zr, Zirconium (ppm) 9.53 0.499 9.28 9.79 Aqua Regia Digestion
Cu-Sol(H2SO4), Copper soluble (sulphuric) (wt.%) 0.322 0.022 0.303 0.341 Sulphuric Acid 5% Leach
Downloads
Certificate DataPack SDS NRAM (223 KB)
Add to cart
Pricing & Stock
  • Pack Size
    Price
    Stock Level
  • 10g Sachet
    $3.30
    1,900 +
  • 60g Sachet
    $8.05
    2,000 +
  • 1Kg Jar
    $133.00
    108
Specifications
CRM Group