OREAS 75b

OREAS 75b 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 75b has been packaged under nitrogen and is available in single-use 10g units in laminated foil pouches.

Analyte Certified Value 1SD 95% Confidence Limits Low 95% Confidence Limits High Method
Ni, Nickel (wt.%) 5.29 0.185 5.19 5.39 4-Acid Digestion
Co, Cobalt (ppm) 741 29 727 755 4-Acid Digestion
As, Arsenic (ppm) 974 73 934 1014 4-Acid Digestion
Al, Aluminium (wt.%) 2.79 0.021 2.78 2.80 Borate Fusion XRF
Ca, Calcium (wt.%) 3.03 0.034 3.00 3.06 Borate Fusion XRF
Co, Cobalt (ppm) 788 18 773 802 Borate Fusion XRF
Cr, Chromium (ppm) 942 58 896 988 Borate Fusion XRF
Cu, Copper (ppm) 1483 116 1333 1633 Borate Fusion XRF
Fe, Iron (wt.%) 17.17 0.193 16.99 17.34 Borate Fusion XRF
K, Potassium (wt.%) 0.410 0.010 0.403 0.416 Borate Fusion XRF
Mg, Magnesium (wt.%) 8.75 0.101 8.66 8.84 Borate Fusion XRF
Mn, Manganese (wt.%) 0.097 0.004 0.094 0.100 Borate Fusion XRF
Ni, Nickel (ppm) 53825 1020 52847 54802 Borate Fusion XRF
P, Phosphorus (wt.%) 0.019 0.001 0.018 0.020 Borate Fusion XRF
Si, Silicon (wt.%) 15.67 0.128 15.58 15.76 Borate Fusion XRF
Ti, Titanium (wt.%) 0.139 0.005 0.136 0.142 Borate Fusion XRF
Al, Aluminium (wt.%) 2.77 0.125 2.70 2.84 Borate / Peroxide Fusion ICP
As, Arsenic (ppm) 983 54 952 1013 Borate / Peroxide Fusion ICP
Ba, Barium (ppm) 167 5 163 172 Borate / Peroxide Fusion ICP
Ca, Calcium (wt.%) 3.05 0.077 3.00 3.10 Borate / Peroxide Fusion ICP
Ce, Cerium (ppm) 33.6 1.71 32.3 34.8 Borate / Peroxide Fusion ICP
Co, Cobalt (ppm) 764 43 736 793 Borate / Peroxide Fusion ICP
Cr, Chromium (ppm) 894 98 833 954 Borate / Peroxide Fusion ICP
Cs, Caesium (ppm) 2.43 0.231 2.22 2.64 Borate / Peroxide Fusion ICP
Cu, Copper (ppm) 1536 75 1486 1586 Borate / Peroxide Fusion ICP
Dy, Dysprosium (ppm) 2.17 0.22 1.94 2.40 Borate / Peroxide Fusion ICP
Er, Erbium (ppm) 1.15 0.091 1.04 1.26 Borate / Peroxide Fusion ICP
Eu, Europium (ppm) 0.79 0.09 0.71 0.87 Borate / Peroxide Fusion ICP
Fe, Iron (wt.%) 17.45 0.411 17.21 17.70 Borate / Peroxide Fusion ICP
Ga, Gallium (ppm) 6.39 0.413 5.98 6.79 Borate / Peroxide Fusion ICP
Ho, Holmium (ppm) 0.42 0.05 0.36 0.47 Borate / Peroxide Fusion ICP
K, Potassium (wt.%) 0.439 0.048 0.408 0.469 Borate / Peroxide Fusion ICP
La, Lanthanum (ppm) 18.5 1.05 17.2 19.7 Borate / Peroxide Fusion ICP
Li, Lithium (ppm) 23.5 1.12 22.5 24.5 Borate / Peroxide Fusion ICP
Mg, Magnesium (wt.%) 8.88 0.265 8.72 9.03 Borate / Peroxide Fusion ICP
Mn, Manganese (wt.%) 0.095 0.006 0.092 0.098 Borate / Peroxide Fusion ICP
Nb, Niobium (ppm) 3.60 0.205 3.40 3.81 Borate / Peroxide Fusion ICP
Nd, Neodymium (ppm) 14.4 1.06 13.1 15.7 Borate / Peroxide Fusion ICP
Ni, Nickel (ppm) 53621 1804 52538 54705 Borate / Peroxide Fusion ICP
Pb, Lead (ppm) 32.6 2.12 31.4 33.8 Borate / Peroxide Fusion ICP
Pr, Praseodymium (ppm) 3.84 0.254 3.51 4.17 Borate / Peroxide Fusion ICP
Rb, Rubidium (ppm) 20.8 1.03 19.8 21.7 Borate / Peroxide Fusion ICP
Sb, Antimony (ppm) 4.78 0.62 4.16 5.39 Borate / Peroxide Fusion ICP
Si, Silicon (wt.%) 16.04 0.324 15.83 16.24 Borate / Peroxide Fusion ICP
Sm, Samarium (ppm) 2.79 0.208 2.66 2.92 Borate / Peroxide Fusion ICP
Sr, Strontium (ppm) 60 5.8 56 65 Borate / Peroxide Fusion ICP
Tb, Terbium (ppm) 0.38 0.027 0.34 0.41 Borate / Peroxide Fusion ICP
Th, Thorium (ppm) 7.43 0.472 7.06 7.79 Borate / Peroxide Fusion ICP
Ti, Titanium (wt.%) 0.139 0.002 0.138 0.141 Borate / Peroxide Fusion ICP
Tl, Thallium (ppm) 0.66 0.08 0.55 0.77 Borate / Peroxide Fusion ICP
Tm, Thulium (ppm) 0.19 0.03 0.15 0.22 Borate / Peroxide Fusion ICP
U, Uranium (ppm) 1.64 0.129 1.55 1.73 Borate / Peroxide Fusion ICP
V, Vanadium (ppm) 57 11 45 69 Borate / Peroxide Fusion ICP
W, Tungsten (ppm) 4.25 0.75 3.67 4.84 Borate / Peroxide Fusion ICP
Y, Yttrium (ppm) 11.2 0.50 10.9 11.5 Borate / Peroxide Fusion ICP
Yb, Ytterbium (ppm) 1.11 0.16 0.95 1.27 Borate / Peroxide Fusion ICP
Zn, Zinc (ppm) 142 8 137 147 Borate / Peroxide Fusion ICP
Zr, Zirconium (ppm) 48.3 5.4 42.9 53.7 Borate / Peroxide Fusion ICP
Ag, Silver (ppm) 0.839 0.071 0.792 0.886 4-Acid Digestion
Al, Aluminium (wt.%) 2.85 0.133 2.78 2.92 4-Acid Digestion
Ba, Barium (ppm) 171 9 165 176 4-Acid Digestion
Be, Beryllium (ppm) 0.64 0.10 0.57 0.71 4-Acid Digestion
Bi, Bismuth (ppm) 1.84 0.117 1.79 1.88 4-Acid Digestion
Ca, Calcium (wt.%) 3.02 0.114 2.95 3.09 4-Acid Digestion
Cd, Cadmium (ppm) 0.77 0.08 0.73 0.81 4-Acid Digestion
Ce, Cerium (ppm) 36.6 1.89 35.3 37.9 4-Acid Digestion
Cs, Caesium (ppm) 2.69 0.168 2.58 2.81 4-Acid Digestion
Cu, Copper (ppm) 1541 49 1515 1566 4-Acid Digestion
Fe, Iron (wt.%) 17.17 0.810 16.74 17.60 4-Acid Digestion
Ga, Gallium (ppm) 7.00 0.513 6.65 7.35 4-Acid Digestion
Hf, Hafnium (ppm) 1.33 0.081 1.28 1.38 4-Acid Digestion
K, Potassium (wt.%) 0.434 0.021 0.423 0.446 4-Acid Digestion
La, Lanthanum (ppm) 19.7 1.77 18.6 20.8 4-Acid Digestion
Li, Lithium (ppm) 21.1 1.32 20.3 22.0 4-Acid Digestion
Mg, Magnesium (wt.%) 8.80 0.267 8.67 8.94 4-Acid Digestion
Mn, Manganese (wt.%) 0.093 0.005 0.091 0.096 4-Acid Digestion
Na, Sodium (wt.%) 0.572 0.021 0.560 0.585 4-Acid Digestion
Nb, Niobium (ppm) 4.41 0.433 4.13 4.68 4-Acid Digestion
P, Phosphorus (wt.%) 0.017 0.002 0.016 0.018 4-Acid Digestion
Rb, Rubidium (ppm) 22.0 1.25 21.2 22.9 4-Acid Digestion
Re, Rhenium (ppm) 0.011 0.002 0.010 0.013 4-Acid Digestion
S, Sulphur (wt.%) 9.59 1.35 8.70 10.47 4-Acid Digestion
Sb, Antimony (ppm) 5.11 0.452 4.83 5.39 4-Acid Digestion
Sc, Scandium (ppm) 8.95 0.766 8.48 9.42 4-Acid Digestion
Se, Selenium (ppm) 6.75 0.87 6.13 7.38 4-Acid Digestion
Sn, Tin (ppm) 1.43 0.15 1.35 1.52 4-Acid Digestion
Sr, Strontium (ppm) 64 3.3 62 66 4-Acid Digestion
Ta, Tantalum (ppm) 0.28 0.018 0.27 0.30 4-Acid Digestion
Te, Tellurium (ppm) 0.63 0.07 0.59 0.66 4-Acid Digestion
Th, Thorium (ppm) 8.08 0.331 7.87 8.30 4-Acid Digestion
Ti, Titanium (wt.%) 0.140 0.007 0.135 0.144 4-Acid Digestion
Tl, Thallium (ppm) 0.68 0.053 0.66 0.70 4-Acid Digestion
U, Uranium (ppm) 1.68 0.111 1.62 1.74 4-Acid Digestion
V, Vanadium (ppm) 58 3.7 56 59 4-Acid Digestion
W, Tungsten (ppm) 4.67 0.462 4.49 4.85 4-Acid Digestion
Y, Yttrium (ppm) 10.6 0.62 10.2 11.0 4-Acid Digestion
Zn, Zinc (ppm) 149 10 143 155 4-Acid Digestion
Zr, Zirconium (ppm) 48.7 3.62 46.6 50.9 4-Acid Digestion
S, Sulphur (wt.%) 10.79 0.301 10.62 10.97 Infrared Combustion
LOI1000, Loss On Ignition @1000 °C (wt.%) 7.94 0.105 7.85 8.03 Thermogravimetry
Downloads
Certificate DataPack SDS NRAM (367 KB)
Add to Cart
Stock
  • Pack Size
    Price
    Stock Level
  • 10g Sachet
    $4.50
    22,000 +
Specifications