OREAS 13c

OREAS 13c is a multi-element Certified Reference Material containing low levels of platinum group elements (PGEs), copper, nickel, and gold dispersed within a gabbro-norite matrix.

Fresh gabbro-norite host rock was sourced from the Black Hill Norite Complex (South Australia). Various ore materials, including ultramafic nickel sulphide ores from (Western Australia) and mafic-hosted Cu-Ni-PGE ore from Sudbury (Canada), some high grade copper ore from Cobar region of New South Wales, and ultramafic-hosted PGE ores from the Merensky and UG2 Reefs (South Africa), were combined with the gabbro-norite.

OREAS 13c 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.%) 0.229 TBD TBD TBD 4-Acid Digestion
Cu, Copper (wt.%) 0.236 TBD TBD TBD 4-Acid Digestion
Au, Gold (ppb) 211 TBD TBD TBD Pb Fire Assay
Pt, Platinum (ppb) 204 TBD TBD TBD Pb Fire Assay
Pd, Palladium (ppb) 151 TBD TBD TBD Pb Fire Assay
Cr, Chromium (wt.%) 0.690 TBD TBD TBD 4-Acid Digestion
S, Sulphur (wt.%) 0.670 TBD TBD TBD 4-Acid Digestion
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Certificate DataPack SDS NRAM (206 KB)
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