Specifications
-
CRM State:
-
Matrix:
-
Mineralisation:
OREAS H3 was prepared from gold-copper oxide ore from the Hedges Mine located in the southwest Yilgarn Block of Western Australia. This deposit and the adjacent Boddington Mine deposit are hosted by diorite-andesite intrusive and volcanic rocks of the Saddleback Greenstone Belt. The mineralisation is structurally-controlled and intrusion-related and formed by two overprinting Archaean magmatic-hydrothermal systems. The earliest mineralisation comprises widespread silica-biotite alteration while the second stage comprises complex quartz-albite-molybdenite veins (controlling Mo distribution), clinozoisite-sulphide-quartz-biotite veining (controlling low grade skarn Au-Cu mineralisation) and actinolite, carbonate-chlorite-sulphide and sulphide veins (controlling high grade mineralisation).
Analyte | Certified Value | 1SD | 95% Confidence Limits Low | 95% Confidence Limits High | Method |
---|---|---|---|---|---|
Au, Gold (ppm) | 2.00 | 0.080 | 1.97 | 2.04 | Pb Fire Assay |
Ag, Silver (ppm) | 4.95 | 0.300 | 4.85 | 5.06 | 4-Acid Digestion |
Cu, Copper (ppm) | 443 | 22 | 432 | 455 | 4-Acid Digestion |
Each quarter, we will keep you up to date with news on the latest OREAS CRMs and QA/QC best practices in the analytical industry.