OREAS 997

OREAS 997 is a copper-gold sulphide concentrate CRM sourced from the Ernest Henry Mine in Queensland, Australia. The material is derived from iron oxide copper-gold (IOCG) mineralisation and is intended for the analysis of copper, gold and associated elements within a sulphide concentrate matrix.

OREAS 997 has been characterized using the following methods:

  • Cu by Classical Wet Chemistry
  • Gold by Pb collection fire assay (25-50g charge weight) with AAS and ICP-OES finish
  • Major elements by oxidising fusion with XRF finish
  • Full ICP-OES and ICP-MS elemental suites by 4-acid (HNO3-HF-HClO4-HCl) digestion
  • Total S by infrared combustion furnace
  • Fluorine by ion selective electrode

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
Cu, Copper (wt.%) 26.18 TBD TBD TBD Borate Fusion XRF
Au, Gold (ppm) 11.90 TBD TBD TBD Pb Fire Assay
Downloads
Certificate DataPack SDS NRAM (206 KB)
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This CRM is currently in production and not yet available for orders.

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Specifications