OREAS 13c

OREAS 13c is a multi-element Certified Reference Material containing platinum group elements (PGEs), copper, nickel and gold dispersed in a gabbronorite matrix.

The gabbronorite host was obtained from a mafic to ultramafic intrusive complex (Giles Complex) within Mesoproterozoic granulites of the Musgrave Province, Western Australia. To this barren matrix, carefully proportioned additions of ore materials were blended, including high-grade nickel sulphide ores from the Cosmos district (Western Australia) and Glencore’s Sudbury operations (Canada), a copper-rich ore from the Cobar region of New South Wales, PGE ores from the Bushveld Complex (Dishaba and UG2 Reef, South Africa), and a high-grade gold ore from the Frogs Leg deposit in Western Australia.

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.