OREAS 504d reference material
Certified values
Au, ppm1.46
Cu1.10 %
Mo, ppm507
Material typePorphyry copper-gold ore
ManufacturerOREAS
Packaging—
Values from the manufacturer's certificate. Exact tolerances (1SD, confidence intervals) are given in the certificate supplied with the pack.
About the material
A blend of porphyry copper-gold ores from the Cadia and Northparkes mines (Australia) with barren granodiorite. The replacement for OREAS 504c.
What it is used for
Inserted into gold sample batches to check fire assay accuracy. A grade of 1.46 ppm suits QC of typical ore-grade samples. Certified copper checks the accuracy of copper and gold assays.
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