OREAS 235b

OREAS 235b was prepared from a blend of high grade gold-bearing ore and barren metasediments. The ore was sourced from the Fosterville Mine, located 20km from the city of Bendigo in the state of Victoria, Australia. The deposit is hosted by a metamorphosed interbedded turbidite sequence of sandstones, siltstones and shales. Primary gold mineralization occurs as disseminated arsenopyrite and pyrite in a quartz–carbonate veinlet stockwork. Primary gold also occurs as visible gold where it variably overprints sulphide mineralization and is found as disseminated fine specks (>1 mm) of gold within host quartz veins. The visible gold is spatially associated with antimony mineralization, in the form of stibnite that occurs with quartz and varies from replacement and infill of earlier quartz-carbonate stockwork veins, to massive stibnite-only veins of up to 0.5m in width (Hitchman, Philips, & Greenberger, 2017).

Anticipated Certification Program:

  • Au by fire assay with AAS or ICP finish;
  • Au by aqua regia digestion with AAS or ICP finish;
  • Au by cyanide leach (5-200g sample weight) with ICP or AAS finish;
  • Full elemental suite package by 4-acid digestion with ICP-OES and MS finish;
  • Full elemental suite package by aqua regia digestion with ICP-OES and MS finish.
Note: Analyte values are indicative only and may change when certified.

Analyte Indicative Value 1SD Expanded Uncertainty Low Expanded Uncertainty High Method
Au, Gold (ppm) 1.60 TBD TBD TBD Pb Fire Assay
Certificate DataPack SDS NRAM (231 KB)
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