OREAS 505c
SKU: 505c
OREAS 505c is a porphyry Cu–Mo–Au certified reference material produced from
a blend of granodiorite/granite host rocks with porphyry Cu–Au ore, complemented
by minor Mo-bearing and Au-bearing sulphide components to establish
porphyry-style element ratios. The matrix reproduces felsic intrusive rocks with
disseminated chalcopyrite ± molybdenite ± pyrite, providing a stable,
homogeneous standard for calibration and quality control of 4-acid/near-total
digestion ICP-OES/MS and fire assay determinations.
OREAS 505c has been characterized using the following methods:
Gold via 25-50g fire assay with gravimetric finish
Silver via 25-50g fire assay with Gravimetric finish
Silver via 4-Acid digestion with AAS finish
Certified values for applicable analytes are operationally defined for each
method, with results under OREAS ISO 17034 scope of
accreditation.
Specifications
- State: primary
- Matrix: granodiorite
- Mineralisation: porphyry copper-gold
- CRM Group: Au, Au-Cu ore
Certified Values
| Analyte | Certified Value | 1SD | 95% CL Low | 95% CL High | Method |
|---|---|---|---|---|---|
| Cu, Copper (ppm) | 3200 | TBD | TBD | TBD | 4-Acid Digestion |
| Au, Gold (ppm) | 0.550 | TBD | TBD | TBD | Pb Fire Assay |
| Mo, Molybdenum (ppm) | 65 | TBD | TBD | TBD | 4-Acid Digestion |
| S, Sulphur (wt.%) | 0.560 | TBD | TBD | TBD | 4-Acid Digestion |
Product Specifications
Certified Reference Values
| Analyte | Certified Value | Uncertainty (1SD) | 95% Confidence Low | 95% Confidence High | Method |
|---|
SD = Standard Deviation | CL = 95% Confidence Limits
Methods: AR = Aqua Regia, 4-Acid = 4-Acid Digestion, LBF = Lithium Borate Fusion, FA/AAS = Fire Assay with Atomic Absorption, LECO = LECO Combustion Analysis
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