OREAS 683b

OREAS 683b is a platinum group element (PGE) Certified Reference Material (CRM) prepared from a blend of high-grade PGE ore, with some nickel sulphide ore, and barren gabbro-norite. The principal PGE ore component was sourced from the Dishaba Mine Merensky Reef (South Africa), a well-known operation on the western limb of the Bushveld Igneous Complex. Additional PGE ores were sourced from the UG2 Reef.  Minor amounts of komatiitic-hosted, high-grade Ni sulphide ores from the Leinster region (Western Australia). A small amount greenstone-hosted orogenic gold material from Kalgoorlie district (Western Australia) was also added. Fresh barren gabbro-norite rock was sourced from the Black Hill Norite Complex (South Australia).

OREAS 683b has been characterized using the following methods:

  • 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
  • Au, Pt and Pd by lead collection fire assay with ICP-OES and ICP-MS
  • Au, Pt, Pd, Ir, Rh and Ru by nickel sulphide (NiS) collection fire assay with ICP-OES and ICP-MS

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.%) 0.160 TBD TBD TBD 4-Acid Digestion
Cu, Copper (wt.%) 0.040 TBD TBD TBD 4-Acid Digestion
Au, Gold (ppb) 208 TBD TBD TBD Pb Fire Assay
Pt, Platinum (ppb) 1756 TBD TBD TBD Pb Fire Assay
Pd, Palladium (ppb) 836 TBD TBD TBD Pb Fire Assay
Cr, Chromium (wt.%) 1.09 TBD TBD TBD 4-Acid Digestion
S, Sulphur (wt.%) 0.450 TBD TBD TBD 4-Acid Digestion
Downloads
Certificate DataPack SDS NRAM (206 KB)
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