OREAS 453

OREAS 453 is a nickel–cobalt laterite certified reference material produced from a blend of limonitic, saprolitic and clay-rich nickel laterite materials sourced predominantly from the Bulong nickel laterite deposit in Western Australia.

The blend incorporates multiple Bulong Ni–Co laterite materials, including primary ore shipments, reprocessed material and related lateritic feedstocks, together with supplementary saprolitic and clay-rich components from Murrin Murrin and Ravensthorpe laterite systems. Minor additions of lateritic nickel concentrate were included to achieve the target nickel and cobalt grades while maintaining matrix consistency.

OREAS 453 has been characterized using the following methods:

  • Borate Fusion XRF- Majors and some traces, including Loss on Ignition (LOI) at 1000 °C
  • Sodium peroxide fusion with full suite elemental package by ICP-OES and/or MS finish
  • Carbon and sulphur by infrared combustion furnace/CS analyser

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.%) 1.42 TBD TBD TBD Borate Fusion XRF
Co, Cobalt (ppm) 660 TBD TBD TBD Borate Fusion XRF
Fe2O3, Iron(III) oxide (wt.%) 26.00 TBD TBD TBD Borate Fusion XRF
MgO, Magnesium oxide (wt.%) 4.20 TBD TBD TBD Borate Fusion XRF
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