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OREAS 615
OREAS 615 is a certified reference material prepared from a blend dominated by silver concentrate and copper-sulfide concentrates from DeGrussa and Mt Carlton, with Ag–Pb–Zn ore from Bowdens and a minor rhyodacite diluent.
Designed for calibration and routine QA/QC of multi-element geochemical methods (e.g., FA for Au/Ag; multi-acid digestion ICP-OES/MS for base metals; S/As/Pb/Zn pathfinders), OREAS 615 replicates the behaviour of concentrate-rich polymetallic sulfide materials encountered in exploration, plant QA/QC and metallurgical programs.
OREAS 615 has been characterized using the following methods:
- Gold via 25-50g fire assay with AAS or ICP-OES finish
- 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) | 1005 | TBD | TBD | TBD | Pb Fire Assay |
| Au, Gold (ppm) | 1.73 | TBD | TBD | TBD | Pb Fire Assay |
| Cu, Copper (ppm) | 50000 | TBD | TBD | TBD | 4-Acid Digestion |
| S, Sulphur (wt.%) | 8.00 | TBD | TBD | TBD | Infrared Combustion |
| As, Arsenic (ppm) | 669 | TBD | TBD | TBD | 4-Acid Digestion |
| Pb, Lead (wt.%) | 0.150 | TBD | TBD | TBD | 4-Acid Digestion |
| Zn, Zinc (wt.%) | 0.530 | TBD | TBD | TBD | 4-Acid Digestion |
Downloads
Certificate DataPack SDS NRAM (226 KB)Stock
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Specifications
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