OREAS 929 reference material
Certified values
Cu2.00 %
Ag, ppm7.16
Material typeCopper 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
Copper ore from the CSA mine (Cobar, New South Wales, Australia), part of the OREAS 920–935 series. Gold is not certified.
What it is used for
Inserted into copper sample batches to check the accuracy of copper assays by 4-acid digestion. A grade of Cu 2.00% suits QC of copper ores with similar grades. Gold is not certified in this material.
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