OREAS 70b

OREAS 70b 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 70b 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.%) 0.218 0.010 0.212 0.223 4-Acid Digestion
Co, Cobalt (ppm) 78 5.0 76 81 4-Acid Digestion
As, Arsenic (ppm) 148 8 145 150 4-Acid Digestion
Al, Aluminium (wt.%) 3.81 0.039 3.78 3.84 Borate Fusion XRF
Ca, Calcium (wt.%) 3.07 0.022 3.05 3.09 Borate Fusion XRF
Cr, Chromium (ppm) 1243 44 1216 1271 Borate Fusion XRF
Fe, Iron (wt.%) 5.51 0.086 5.44 5.58 Borate Fusion XRF
K, Potassium (wt.%) 0.585 0.010 0.577 0.593 Borate Fusion XRF
Mg, Magnesium (wt.%) 13.54 0.086 13.48 13.61 Borate Fusion XRF
Mn, Manganese (wt.%) 0.115 0.003 0.112 0.117 Borate Fusion XRF
Na, Sodium (wt.%) 0.742 0.016 0.726 0.757 Borate Fusion XRF
Ni, Nickel (ppm) 2231 62 2176 2286 Borate Fusion XRF
P, Phosphorus (wt.%) 0.024 0.002 0.023 0.025 Borate Fusion XRF
Si, Silicon (wt.%) 22.42 0.171 22.28 22.56 Borate Fusion XRF
Ti, Titanium (wt.%) 0.178 0.004 0.175 0.180 Borate Fusion XRF
Al, Aluminium (wt.%) 3.80 0.162 3.71 3.88 Borate / Peroxide Fusion ICP
As, Arsenic (ppm) 143 20 135 151 Borate / Peroxide Fusion ICP
Ba, Barium (ppm) 202 11 194 210 Borate / Peroxide Fusion ICP
Ca, Calcium (wt.%) 3.08 0.101 3.03 3.13 Borate / Peroxide Fusion ICP
Ce, Cerium (ppm) 27.5 2.62 25.5 29.5 Borate / Peroxide Fusion ICP
Co, Cobalt (ppm) 83 6.7 79 88 Borate / Peroxide Fusion ICP
Cr, Chromium (ppm) 1252 120 1180 1323 Borate / Peroxide Fusion ICP
Cs, Caesium (ppm) 3.37 0.293 3.10 3.65 Borate / Peroxide Fusion ICP
Cu, Copper (ppm) 52 6 48 56 Borate / Peroxide Fusion ICP
Dy, Dysprosium (ppm) 1.92 0.149 1.79 2.05 Borate / Peroxide Fusion ICP
Er, Erbium (ppm) 1.18 0.107 1.08 1.29 Borate / Peroxide Fusion ICP
Eu, Europium (ppm) 0.54 0.037 0.51 0.56 Borate / Peroxide Fusion ICP
Fe, Iron (wt.%) 5.66 0.234 5.53 5.80 Borate / Peroxide Fusion ICP
Ga, Gallium (ppm) 9.71 0.412 9.39 10.03 Borate / Peroxide Fusion ICP
Gd, Gadolinium (ppm) 1.93 0.23 1.70 2.16 Borate / Peroxide Fusion ICP
Ho, Holmium (ppm) 0.41 0.05 0.36 0.46 Borate / Peroxide Fusion ICP
K, Potassium (wt.%) 0.617 0.056 0.584 0.650 Borate / Peroxide Fusion ICP
La, Lanthanum (ppm) 15.5 1.7 13.8 17.2 Borate / Peroxide Fusion ICP
Li, Lithium (ppm) 35.3 5.2 28.5 42.1 Borate / Peroxide Fusion ICP
Mg, Magnesium (wt.%) 13.61 0.434 13.36 13.86 Borate / Peroxide Fusion ICP
Mn, Manganese (wt.%) 0.116 0.004 0.114 0.118 Borate / Peroxide Fusion ICP
Nb, Niobium (ppm) 3.27 0.307 2.89 3.65 Borate / Peroxide Fusion ICP
Nd, Neodymium (ppm) 11.3 1.4 9.9 12.8 Borate / Peroxide Fusion ICP
Ni, Nickel (ppm) 2220 82 2168 2271 Borate / Peroxide Fusion ICP
P, Phosphorus (wt.%) 0.025 0.003 0.022 0.028 Borate / Peroxide Fusion ICP
Pb, Lead (ppm) 13.2 1.8 11.8 14.6 Borate / Peroxide Fusion ICP
Pr, Praseodymium (ppm) 3.13 0.35 2.75 3.52 Borate / Peroxide Fusion ICP
Rb, Rubidium (ppm) 33.7 2.87 31.0 36.4 Borate / Peroxide Fusion ICP
S, Sulphur (wt.%) 0.308 0.026 0.291 0.324 Borate / Peroxide Fusion ICP
Si, Silicon (wt.%) 22.78 0.458 22.51 23.04 Borate / Peroxide Fusion ICP
Sm, Samarium (ppm) 2.00 0.155 1.85 2.15 Borate / Peroxide Fusion ICP
Sr, Strontium (ppm) 72 5.7 67 77 Borate / Peroxide Fusion ICP
Tb, Terbium (ppm) 0.32 0.03 0.29 0.34 Borate / Peroxide Fusion ICP
Th, Thorium (ppm) 6.45 0.578 6.01 6.88 Borate / Peroxide Fusion ICP
Ti, Titanium (wt.%) 0.176 0.006 0.171 0.181 Borate / Peroxide Fusion ICP
Tm, Thulium (ppm) 0.18 0.02 0.16 0.21 Borate / Peroxide Fusion ICP
U, Uranium (ppm) 1.87 0.32 1.62 2.12 Borate / Peroxide Fusion ICP
V, Vanadium (ppm) 69 6.8 64 74 Borate / Peroxide Fusion ICP
Y, Yttrium (ppm) 10.7 0.64 10.2 11.2 Borate / Peroxide Fusion ICP
Yb, Ytterbium (ppm) 1.16 0.105 1.07 1.25 Borate / Peroxide Fusion ICP
Zn, Zinc (ppm) 107 10 101 114 Borate / Peroxide Fusion ICP
Zr, Zirconium (ppm) 67 9 61 74 Borate / Peroxide Fusion ICP
Ag, Silver (ppm) 0.175 0.035 0.152 0.198 4-Acid Digestion
Al, Aluminium (wt.%) 3.87 0.182 3.78 3.96 4-Acid Digestion
Ba, Barium (ppm) 202 9 197 207 4-Acid Digestion
Be, Beryllium (ppm) 1.04 0.19 0.92 1.15 4-Acid Digestion
Bi, Bismuth (ppm) 0.84 0.15 0.78 0.90 4-Acid Digestion
Ca, Calcium (wt.%) 3.05 0.149 2.97 3.14 4-Acid Digestion
Cd, Cadmium (ppm) 0.36 0.04 0.34 0.38 4-Acid Digestion
Ce, Cerium (ppm) 28.2 1.97 26.9 29.5 4-Acid Digestion
Cs, Caesium (ppm) 3.44 0.271 3.25 3.63 4-Acid Digestion
Cu, Copper (ppm) 52 4.3 50 55 4-Acid Digestion
Fe, Iron (wt.%) 5.52 0.273 5.38 5.66 4-Acid Digestion
Ga, Gallium (ppm) 10.1 0.89 9.5 10.6 4-Acid Digestion
Hf, Hafnium (ppm) 1.86 0.20 1.73 1.98 4-Acid Digestion
In, Indium (ppm) 0.047 0.003 0.044 0.049 4-Acid Digestion
K, Potassium (wt.%) 0.620 0.029 0.604 0.637 4-Acid Digestion
La, Lanthanum (ppm) 15.3 1.41 14.5 16.2 4-Acid Digestion
Li, Lithium (ppm) 34.4 2.61 32.8 35.9 4-Acid Digestion
Mg, Magnesium (wt.%) 13.40 0.783 12.98 13.82 4-Acid Digestion
Mn, Manganese (wt.%) 0.115 0.004 0.113 0.117 4-Acid Digestion
Mo, Molybdenum (ppm) 3.30 0.53 3.07 3.53 4-Acid Digestion
Na, Sodium (wt.%) 0.769 0.033 0.750 0.788 4-Acid Digestion
Nb, Niobium (ppm) 3.68 0.335 3.47 3.88 4-Acid Digestion
P, Phosphorus (wt.%) 0.022 0.001 0.022 0.023 4-Acid Digestion
Pb, Lead (ppm) 13.7 1.6 12.8 14.6 4-Acid Digestion
S, Sulphur (wt.%) 0.309 0.020 0.299 0.320 4-Acid Digestion
Sb, Antimony (ppm) 0.56 0.06 0.53 0.59 4-Acid Digestion
Sc, Scandium (ppm) 12.4 1.08 11.7 13.1 4-Acid Digestion
Sn, Tin (ppm) 1.21 0.18 1.10 1.32 4-Acid Digestion
Sr, Strontium (ppm) 74 6.1 70 78 4-Acid Digestion
Ta, Tantalum (ppm) 0.30 0.04 0.28 0.31 4-Acid Digestion
Th, Thorium (ppm) 6.91 0.278 6.77 7.04 4-Acid Digestion
Ti, Titanium (wt.%) 0.181 0.006 0.177 0.185 4-Acid Digestion
Tl, Thallium (ppm) 0.33 0.04 0.31 0.35 4-Acid Digestion
U, Uranium (ppm) 1.72 0.108 1.64 1.79 4-Acid Digestion
V, Vanadium (ppm) 67 2.6 66 68 4-Acid Digestion
W, Tungsten (ppm) 4.92 0.72 4.72 5.13 4-Acid Digestion
Y, Yttrium (ppm) 9.85 0.520 9.51 10.18 4-Acid Digestion
Zn, Zinc (ppm) 112 9 107 117 4-Acid Digestion
Zr, Zirconium (ppm) 66 5.1 63 69 4-Acid Digestion
S, Sulphur (wt.%) 0.286 0.020 0.273 0.298 Infrared Combustion
LOI1000, Loss On Ignition @1000 °C (wt.%) 6.69 0.330 6.43 6.95 Thermogravimetry
Downloads
Certificate DataPack SDS NRAM (412 KB)
Archived

This CRM is no longer available.
Information is provided for reference only.

Specifications