Specifications
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CRM State:
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Matrix:
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Mineralisation:
Reference material OREAS 52c is a porphyry Au-Cu-Mo-S standard prepared from Au-Cu ore and waste rock samples from a porphyry copper-gold deposit located in central western New South Wales, Australia with the addition of minor Mo concentrate.
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 |
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Au, Gold (ppb) | 346 | 17.0 | 338 | 353 | Pb Fire Assay |
Cu, Copper (wt.%) | 0.344 | 0.009 | 0.339 | 0.348 | 4-Acid Digestion |
Mo, Molybdenum (ppm) | 267 | 15 | 260 | 275 | 4-Acid Digestion |
S, Sulphur (wt.%) | 0.471 | 0.015 | 0.463 | 0.479 | 4-Acid Digestion |
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