OREAS H3

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).