OREAS 80

OREAS 80 is a nickel sulphide Certified Reference Material prepared from a diverse suite of natural ores and geological materials sourced from several world-class mining and exploration operations. The blend incorporates low- and high-grade nickel sulphide ores from Xstrata Nickel’s Leinster region (Western Australia), supplemented by PGE-rich ultramafic material from Anglo American’s UG2 Reef (South Africa), orogenic gold ore from Frogs Leg (Western Australia), and mafic gabbroic material from Black Hill (Western Australia). Additional nickel sulphide feed sourced from Mt Keith has been included to provide further control over Ni, Cu and Co concentrations.

OREAS 80 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.