Specifications
-
CRM State:
-
Matrix:
-
Mineralisation:
Reference material OREAS 54Pa is a porphyry copper-gold standard prepared from ore and waste rock samples from a porphyry copper-gold deposit in central western New South Wales, Australia. Mineralisation in the region is hosted by a sequence of late Ordovician to Early Silurian volcanics, intrusives and sediments that occur within the Bogan Gate Synclinorial Zone of the Lachlan Fold Belt. Copper-gold mineralisation occurs as stockwork quartz veins and disseminations associated with potassic alteration. This alteration is intimately associated spatially and temporally with the small finger-like quartz monzonite porphyries that intrude the Goonumbla Volcanics.
Analyte | Certified Value | 1SD | 95% Confidence Limits Low | 95% Confidence Limits High | Method |
---|---|---|---|---|---|
Au, Gold (ppm) | 2.90 | 0.110 | 2.83 | 2.96 | Pb Fire Assay |
Cu, Copper (wt.%) | 1.55 | 0.020 | 1.54 | 1.56 | 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.