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OREAS 614
OREAS 614 is a certified reference material produced from a rhyodacite host blended with Bowdens Ag–Pb–Zn ore, a silver concentrate, and Cu–Au concentrates from DeGrussa and Mt Carlton.
The matrix replicates a felsic volcanic host carrying epithermal Ag–Au mineralisation with added Cu-sulfide tenor, making OREAS 614 well-suited for calibration and routine QA/QC of multi-element geochemical methods (fire assay for Au/Ag; multi-acid digestion ICP-OES/MS for base metals; S/As/Pb/Zn pathfinders) in exploration and metallurgical workflows.
OREAS 614 has been characterized using the following methods:
- Gold via 25-50g fire assay with AAS or ICP-OES finis
- Silver via 25-50g fire assay with Gravimetric finish
- Gold via 10-40g aqua regia digestion with ICP-MS finish or AAS finish
- Sulphur by infra-red combustion analysis
- 4-Acid digestion for full elemental suite ICP-OES/MS finish
- Aqua regia digestion for full elemental suite ICP-OES finish or AAS finish
Certified values for applicable analytes are operationally defined for each method, with results under OREAS ISO 17034 scope of accreditation.
Note: Analyte values are indicative only and may change when certified.
| Analyte | Indicative Value | 1SD | Expanded Uncertainty Low | Expanded Uncertainty High | Method |
|---|---|---|---|---|---|
| Ag, Silver (ppm) | 500 | TBD | TBD | TBD | Pb Fire Assay |
| Au, Gold (ppm) | 1.45 | TBD | TBD | TBD | Pb Fire Assay |
| Cu, Copper (ppm) | 20000 | TBD | TBD | TBD | 4-Acid Digestion |
| S, Sulphur (wt.%) | 3.65 | TBD | TBD | TBD | Infrared Combustion |
| As, Arsenic (ppm) | 503 | TBD | TBD | TBD | 4-Acid Digestion |
| Pb, Lead (wt.%) | 0.130 | TBD | TBD | TBD | 4-Acid Digestion |
| Zn, Zinc (wt.%) | 0.210 | TBD | TBD | TBD | 4-Acid Digestion |
Downloads
Certificate DataPack SDS NRAM (226 KB)Stock
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