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Location: 12 Km S from Ardrossan, South Australia, Australia
68 St Vincent HighwayPine PointSouth Australia, Australia5571
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Hillside is an Iron-Oxide-Copper-Gold (IOCG) style deposit, located within the Moonta Subdomain of the Olympic Dam Cu-Au Province on the eastern Gawler Craton of South Australia.The geological framework at Hillside is dominated by due north trending faulting and geological contacts. These dominant trends are disrupted by a number of north-west and north-east striking faults which appear to have an influence on the host rocks, alteration and the copper-gold mineralisation.Copper-gold mineralisation is hosted by a sequence of intensely altered skarns and metasediments. The primary copper zones comprise parallel, steeply-dipping structures of massive, disseminated and dispersed sulphide dominated by chalcopyrite with subordinate bornite and chalcocite.Secondary (oxide) copper exhibits flat lying to steeply dipping orientations immediately above primary copper mineralisation dominated by malachite with subordinate azurite, cuprite, atacamite, chrysocolla, copper in chlorite and native copper.Mineralisation which predominantly strikes north-south has so far been observed over the area of 2.3km north-south length and a 900m west-east width. At least four structures with individual coppermineralised strike lengths of +2.0km have been defined to date. Copper mineralisation within all structures remains open along strike and at depth, and has been observed from as shallow as 5m below surface to 710m below surface with true widths estimated to be in the order of 1 to 130m with an average true ore domain thickness of 27m.DimensionsPrimary mineralisation zones within the Hillside deposit are sub-parallel to the lithostratigraphic architecture. Primary Hillside mineralisation strikes approximately north-south and has variable steep dips (70 to 80 degrees) to the west and occasionally east. Leprena mineralisation strikes approximately east-west and dips (60 – 70 degrees) to the north. Secondary mineralisation strikes approximately north-south and tends to be steeply dipping immediately above primary mineralisation and in zones grading to flat lying to shallow dipping dispersion zones (on average 10 to 30 degrees). Mineralisation has so far been observed from 6173130N to 6175500N, 763150E to 764000E and 60RL to -710RL. Approximately 90% - 95% of the total target size (at surface) has been tested and the deposit remains open towards the north and south and at depth.
