Specifications
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CRM State:
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Matrix:
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Mineralisation:
OREAS 22j has been prepared from quartz sand to which 0.5% iron oxide has been added to produce a pale grey pulp. This colouring gives the material an appearance of primary origin (i.e. non-oxide). It is characterised by extremely low background gold of less than 1 ppb (parts per billion; 1 x 10-9) ≡ µg/kg.
OREAS 22j has been characterised for full ICP-OES and MS elemental suites by 4-acid digestion and Au by fire assay.
| Analyte | Indicative Value | 1SD | Expanded Uncertainty Low | Expanded Uncertainty High | Method |
|---|---|---|---|---|---|
| Au, Gold (ppb) | < 1.0 | IND | IND | IND | Pb Fire Assay |