OREAS 74b

OREAS 74b is one of a suite of seven nickel sulphide CRMs prepared from high grade massive nickel sulphide ore and barren ultramafic material sourced from Xstrata Nickel’s Prospero and Tapinos Nickel mines, located in the Kathleen Valley area approximately 30km north of Leinster in Western Australia within the Agnew-Wiluna portion of the Norseman-Wiluna greenstone belt. It is a typical komatiite-associated, massive sulphide deposit representing an in-situ accumulation of massive and semi-massive primary magmatic Ni-Fe sulphides with minor by-products including Cu, Co and platinum group elements (PGE’s).

Nineteen commercial analytical laboratories participated in the program employing the following methods:

  • Lithium borate fusion with X-ray fluorescence;
  • Sodium peroxide fusion or lithium borate fusion with full ICP-OES and ICP-MS suites;
  • Four acid digestion with full ICP-OES and ICP-MS suites;
  • Infra-red combustion furnace for sulphur;
  • Thermogravimetry for Loss On Ignition at 1000 degrees Celsius;

Due to the presence of reactive sulphides OREAS 74b has been packaged under nitrogen and is available in single-use 10g units in laminated foil pouches.

Analyte Certified Value 1SD 95% Confidence Low 95% Confidence High Method
Ni, Nickel (wt.%) 3.38 0.093 3.33 3.43 4-Acid Digestion
Co, Cobalt (ppm) 490 24 477 502 4-Acid Digestion
As, Arsenic (ppm) 603 56 573 633 4-Acid Digestion
Al, Aluminium (wt.%) 3.55 0.048 3.52 3.59 Borate Fusion XRF
Ca, Calcium (wt.%) 3.09 0.015 3.08 3.11 Borate Fusion XRF
Co, Cobalt (ppm) 502 12 498 505 Borate Fusion XRF
Cr, Chromium (ppm) 981 57 943 1018 Borate Fusion XRF
Cu, Copper (ppm) 947 91 848 1046 Borate Fusion XRF
Fe, Iron (wt.%) 12.40 0.180 12.27 12.53 Borate Fusion XRF
K, Potassium (wt.%) 0.691 0.014 0.682 0.700 Borate Fusion XRF
Mg, Magnesium (wt.%) 9.23 0.135 9.12 9.34 Borate Fusion XRF
Na, Sodium (wt.%) 0.692 0.017 0.676 0.708 Borate Fusion XRF
Ni, Nickel (ppm) 33933 932 33136 34729 Borate Fusion XRF
P, Phosphorus (wt.%) 0.020 0.002 0.019 0.020 Borate Fusion XRF
Si, Silicon (wt.%) 19.36 0.208 19.22 19.51 Borate Fusion XRF
Ti, Titanium (wt.%) 0.155 0.003 0.155 0.156 Borate Fusion XRF
Al, Aluminium (wt.%) 3.54 0.132 3.46 3.61 Borate / Peroxide Fusion ICP
As, Arsenic (ppm) 614 35 596 633 Borate / Peroxide Fusion ICP
Ba, Barium (ppm) 210 7 205 216 Borate / Peroxide Fusion ICP
Ca, Calcium (wt.%) 3.09 0.106 3.03 3.14 Borate / Peroxide Fusion ICP
Ce, Cerium (ppm) 30.9 1.04 30.0 31.7 Borate / Peroxide Fusion ICP
Co, Cobalt (ppm) 499 24 483 515 Borate / Peroxide Fusion ICP
Cr, Chromium (ppm) 978 67 935 1021 Borate / Peroxide Fusion ICP
Cs, Caesium (ppm) 2.73 0.239 2.51 2.94 Borate / Peroxide Fusion ICP
Cu, Copper (ppm) 1021 95 962 1081 Borate / Peroxide Fusion ICP
Dy, Dysprosium (ppm) 1.96 0.146 1.77 2.15 Borate / Peroxide Fusion ICP
Er, Erbium (ppm) 1.18 0.088 1.09 1.27 Borate / Peroxide Fusion ICP
Eu, Europium (ppm) 0.53 0.038 0.49 0.56 Borate / Peroxide Fusion ICP
Fe, Iron (wt.%) 12.60 0.467 12.33 12.88 Borate / Peroxide Fusion ICP
Ga, Gallium (ppm) 8.52 0.331 8.22 8.82 Borate / Peroxide Fusion ICP
Gd, Gadolinium (ppm) 1.90 0.149 1.75 2.06 Borate / Peroxide Fusion ICP
Ho, Holmium (ppm) 0.40 0.04 0.36 0.45 Borate / Peroxide Fusion ICP
K, Potassium (wt.%) 0.718 0.051 0.683 0.753 Borate / Peroxide Fusion ICP
La, Lanthanum (ppm) 17.4 0.75 16.6 18.3 Borate / Peroxide Fusion ICP
Li, Lithium (ppm) 29.3 1.71 27.5 31.1 Borate / Peroxide Fusion ICP
Mg, Magnesium (wt.%) 9.38 0.263 9.23 9.53 Borate / Peroxide Fusion ICP
Mn, Manganese (wt.%) 0.093 0.003 0.092 0.094 Borate / Peroxide Fusion ICP
Nb, Niobium (ppm) 3.56 0.266 3.31 3.82 Borate / Peroxide Fusion ICP
Nd, Neodymium (ppm) 11.9 0.69 11.1 12.6 Borate / Peroxide Fusion ICP
Ni, Nickel (ppm) 34286 1186 33631 34942 Borate / Peroxide Fusion ICP
Pb, Lead (ppm) 24.1 2.5 22.2 26.0 Borate / Peroxide Fusion ICP
Pr, Praseodymium (ppm) 3.39 0.260 3.07 3.71 Borate / Peroxide Fusion ICP
Rb, Rubidium (ppm) 31.3 2.10 29.4 33.2 Borate / Peroxide Fusion ICP
S, Sulphur (wt.%) 6.61 0.203 6.46 6.77 Borate / Peroxide Fusion ICP
Si, Silicon (wt.%) 19.68 0.373 19.46 19.89 Borate / Peroxide Fusion ICP
Sm, Samarium (ppm) 2.23 0.186 2.11 2.34 Borate / Peroxide Fusion ICP
Sr, Strontium (ppm) 54 4.5 51 58 Borate / Peroxide Fusion ICP
Tb, Terbium (ppm) 0.31 0.015 0.29 0.32 Borate / Peroxide Fusion ICP
Th, Thorium (ppm) 7.60 0.493 7.20 8.00 Borate / Peroxide Fusion ICP
Ti, Titanium (wt.%) 0.152 0.007 0.147 0.156 Borate / Peroxide Fusion ICP
Tl, Thallium (ppm) 0.60 0.07 0.52 0.68 Borate / Peroxide Fusion ICP
Tm, Thulium (ppm) 0.19 0.03 0.16 0.22 Borate / Peroxide Fusion ICP
U, Uranium (ppm) 2.40 0.219 2.21 2.60 Borate / Peroxide Fusion ICP
V, Vanadium (ppm) 62 11 53 71 Borate / Peroxide Fusion ICP
Y, Yttrium (ppm) 11.3 0.71 10.8 11.8 Borate / Peroxide Fusion ICP
Yb, Ytterbium (ppm) 1.23 0.17 1.05 1.40 Borate / Peroxide Fusion ICP
Zn, Zinc (ppm) 133 11 125 141 Borate / Peroxide Fusion ICP
Zr, Zirconium (ppm) 63 5.7 57 69 Borate / Peroxide Fusion ICP
Ag, Silver (ppm) 0.568 0.044 0.543 0.593 4-Acid Digestion
Al, Aluminium (wt.%) 3.58 0.140 3.51 3.65 4-Acid Digestion
Ba, Barium (ppm) 213 10 208 219 4-Acid Digestion
Be, Beryllium (ppm) 0.81 0.12 0.71 0.90 4-Acid Digestion
Bi, Bismuth (ppm) 1.35 0.085 1.32 1.39 4-Acid Digestion
Ca, Calcium (wt.%) 3.07 0.118 3.00 3.14 4-Acid Digestion
Cd, Cadmium (ppm) 0.60 0.10 0.56 0.64 4-Acid Digestion
Ce, Cerium (ppm) 33.5 1.75 32.4 34.7 4-Acid Digestion
Cs, Caesium (ppm) 2.97 0.152 2.85 3.08 4-Acid Digestion
Cu, Copper (ppm) 998 38 978 1018 4-Acid Digestion
Fe, Iron (wt.%) 12.32 0.679 11.96 12.67 4-Acid Digestion
Ga, Gallium (ppm) 9.03 0.659 8.52 9.53 4-Acid Digestion
Hf, Hafnium (ppm) 1.87 0.109 1.80 1.93 4-Acid Digestion
In, Indium (ppm) 0.067 0.004 0.063 0.070 4-Acid Digestion
K, Potassium (wt.%) 0.729 0.034 0.710 0.748 4-Acid Digestion
La, Lanthanum (ppm) 18.8 1.47 17.9 19.7 4-Acid Digestion
Li, Lithium (ppm) 27.7 2.15 26.4 29.0 4-Acid Digestion
Mg, Magnesium (wt.%) 9.31 0.441 9.07 9.55 4-Acid Digestion
Mn, Manganese (wt.%) 0.091 0.004 0.088 0.093 4-Acid Digestion
Na, Sodium (wt.%) 0.719 0.033 0.699 0.739 4-Acid Digestion
Nb, Niobium (ppm) 4.20 0.383 3.95 4.45 4-Acid Digestion
P, Phosphorus (wt.%) 0.019 0.002 0.018 0.020 4-Acid Digestion
Pb, Lead (ppm) 24.9 2.24 23.6 26.3 4-Acid Digestion
Rb, Rubidium (ppm) 33.2 2.82 31.3 35.0 4-Acid Digestion
Re, Rhenium (ppm) 0.007 0.001 0.006 0.008 4-Acid Digestion
Sb, Antimony (ppm) 2.69 0.182 2.56 2.81 4-Acid Digestion
Sc, Scandium (ppm) 10.2 0.82 9.7 10.7 4-Acid Digestion
Se, Selenium (ppm) 4.64 0.56 4.23 5.05 4-Acid Digestion
Sn, Tin (ppm) 1.44 0.136 1.37 1.50 4-Acid Digestion
Sr, Strontium (ppm) 56 2.8 54 58 4-Acid Digestion
Ta, Tantalum (ppm) 0.33 0.031 0.32 0.35 4-Acid Digestion
Te, Tellurium (ppm) 0.38 0.04 0.35 0.42 4-Acid Digestion
Th, Thorium (ppm) 8.28 0.426 8.02 8.55 4-Acid Digestion
Ti, Titanium (wt.%) 0.156 0.007 0.152 0.161 4-Acid Digestion
Tl, Thallium (ppm) 0.59 0.033 0.57 0.61 4-Acid Digestion
U, Uranium (ppm) 2.45 0.161 2.35 2.54 4-Acid Digestion
V, Vanadium (ppm) 61 2.4 59 62 4-Acid Digestion
W, Tungsten (ppm) 4.75 0.61 4.43 5.08 4-Acid Digestion
Y, Yttrium (ppm) 9.93 0.580 9.56 10.30 4-Acid Digestion
Zn, Zinc (ppm) 136 10 132 141 4-Acid Digestion
Zr, Zirconium (ppm) 65 4.5 63 68 4-Acid Digestion
S, Sulphur (wt.%) 6.57 0.161 6.48 6.65 Infrared Combustion
LOI1000, Loss On Ignition @1000°C (wt.%) 6.63 0.338 6.36 6.89 Thermogravimetry
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Pricing & Stock
  • Pack Size
    Price
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  • 10g Sachet
    $3.60
    34,000 +
Specifications
CRM Group