OREAS 84

OREAS 84 is a nickel sulphide Certified Reference Material prepared from a suite of high grade, komatiite-hosted nickel sulphide ores sourced from the Leinster district (Western Australia),  supplemented with PGE ultramafic ore from the Dishaba Mine Merensky Reef, with some UG2 Reef PGE ore (South Africa), and fresh gabbro-norite rock sourced from the Black Hill Norite Complex (South Australia).

OREAS 84 has been characterized using the following methods:

  • Lithium borate fusion with X-ray fluorescence
  • Full ICP-OES and ICP-MS elemental suites by 4-acid (HNO3-HF-HClO4-HCl) digestion
  • Sodium peroxide fusion or lithium borate fusion with full ICP-OES and ICP-MS suites
  • Sulphur by infrared combustion furnace

Certified values for applicable analytes are operationally defined for each method, with results under OREAS ISO 17034 scope of accreditation.

Note: Analyte values are indicative only and may change when certified.
Analyte Indicative Value 1SD Expanded Uncertainty Low Expanded Uncertainty High Method
Ni, Nickel (wt.%) 10.80 TBD TBD TBD 4-Acid Digestion
Cu, Copper (ppm) 4000 TBD TBD TBD 4-Acid Digestion
Cr, Chromium (wt.%) 0.710 TBD TBD TBD 4-Acid Digestion
S, Sulphur (wt.%) 23.70 TBD TBD TBD Infrared Combustion
Co, Cobalt (ppm) 1607 TBD TBD TBD 4-Acid Digestion
Downloads
Certificate DataPack SDS NRAM (206 KB)
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