Reference material OREAS 15Pz was prepared from a blend of barren alkali olivine basalt and gold-bearing Magdala ore from the Stawell Gold Mine, west-central Victoria, Australia. Mineralisation in the ore consists of a quartz-sericite-carbonate schist assemblage containing the sulphides pyrite and arsenopyrite. Some of the gold is refractory in occurrence, being hosted by arsenopyrite.
|Analyte||Certified Value||1SD||95% Confidence Limits Low||95% Confidence Limits High||Method|
|Au, Gold (ppm)||1.27||1.25||1.29||Pb Fire Assay|
|Au, Gold (ppm)||1.21||1.16||1.26||Aqua Regia Digestion|
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