OREAS 203 was prepared from a blend of gold-bearing Magdala ore from the
Stawell Gold Mine, west-central Victoria, Australia and barren tholeiitic basalt
from Epping, Victoria, Australia. The Magdala lode is intimately associated with
an intensely deformed package of volcanogenic sedimentary rocks. The ore samples
were taken from basalt contact lodes and are strongly chlorite-altered (+/-
silica, stilpnomelane) carbonaceous mudstones located directly on the western
margin of the Magdala basalt dome. Mineralisation in the ore consists of a
quartz-sericite-carbonate schist assemblage containing the sulphides
arsenopyrite, pyrrhotite and pyrite. OREAS 203 is one of a suite of eight CRMs
ranging in gold content from 0.514 to 9.24ppm.

Analyte Certified Value 1SD 95% Confidence Low 95% Confidence High Method
Au, Gold (ppm) 0.871 0.030 0.859 0.884 Pb Fire Assay
Au, Gold (ppm) 0.825 0.062 0.793 0.857 Aqua Regia Digestion
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  • 60g Sachet
CRM Group


Certificate Datapack SDS NRAM (221 KiB)