OREAS 243 reference material
Certified values
Au, ppm12.39
Ag, ppm3.04
Material typeGold 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 gold ore from the Frogs Leg mine (Western Australia) and barren greenstone.
What it is used for
Inserted into gold sample batches to check fire assay accuracy. A grade of 12.39 ppm suits QC of very high-grade samples and dilution checks. Certified copper checks the accuracy of copper and gold assays.
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