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|
|Au, Gold (ppb)||346||17||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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