OREAS 15Pz

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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