Feysville
Anglo Australian Resources N.L. 100%
The Feysville project consists of all mineral rights attached to two mining leases located 16km SSE of Kalgoorlie. The project is situated in the geological / structural corridor, bounded by the Boulder Lefroy Fault, that hosts the world class plus million ounce deposits of Mt Charlotte, Fimiston, New Celebration, Victory-Defiance, Junction, Argo and Revenge / Belleisle. and St Ives as well as other substantial deposits such as Hannans South (located 3km north of the project). The project is strategically located between a number of under utilised gold processing plants, providing low cost development options for any resources discovered at Feysville.
Geology at Feysville is complex with regional mapping identifying a double plunging northwest trending antiformal structure known as the Feysville Dome bounded to the west by the Boulder Lefroy Fault and south by the Feysville Fault. The Feysville fault, located on the southern margin of the tenement is interpreted to represent thrusting of underlying mafic/ultramafic volcanic and intrusive rocks over a younger felsic metasedimentary sequence to the south. The geology is dominated by an ultramafic unit correlatable with the ultramafic horizon that hosts nickel sulphide deposits at Kambalda 30km to the south The sequence has been extensively intruded by intermediate and felsic porphyries.
There a number of historical gold workings on the project and drilling has identified strong alteration associated with primary gold mineralisation. Gold mineralisation is typically located at the sheared contacts of intrusive porphyry units, within pyrite sericite altered porphyries and also associated with chalcopyrite magnetite / epidote altered breccia zones within ultramafic units.
Previous exploration by WMC Resources Ltd targeted gold and nickel with initial focus on the ultramafic unit for nickel sulphides, with best results of 2m @ 1%Ni and 4m @ 0.67%Ni. Exploration has consisted of a comprehensive soil survey, ground magnetic surveys, TEM surveys, 264 RAB / Aircore holes, 444 RC holes and 5 diamond holes. The soil survey defined an area of extensive gold anomalism clustered in the SE corner of the tenement package. Follow- up drilling confirmed the gold potential of the area with intersections such as 7m @ 2.47g/t Au at Empire Rose, 10m @ 9.1g/t Au at Ethereal, 8m @ 2.08g/t at Kamperman and 8m @ 3.26g/t Au at Rogan Josh.
At Ethereal gold mineralisation has been defined over at least a 100m strike length to a depth of 120m below surface and remains open at depth. There is potential to define a small resource at this prospect. The other nine prospects containing significant intersections are at early stages with mineralisation open along strike and at depth. Much of the drilling elsewhere has been to shallow depths. However the substantial secondary gold mineralisation defined by these shallower holes provide targets for deeper drilling. Undrilled geochemical anomalies and conceptual targets defined from interpretation of detailed ground magnetic data provide additional exploration targets.
At the Michelangelo Prospect (Anomaly J) two holes tested an interpreted steeply south-dipping conductor. Both intersected a sulphidic silicified black shale unit which correlates well with the interpreted conductor. A copper-rich zone in one hole intersected 8m @ 2.87%Cu, 26.5g/t Ag and 0.31g/t Au. This intersection correlates well significant pyrite chalcopyrite alteration intersected in previous drilling which returned a best intersection of 3m @ 1.83%Cu, 13.4g/t Ag and 0.26g/t Au.
Previous exploration programs for nickel sulphides at Feysville defined three ground electromagnetic (“EM”) anomalies, interpreted to be located near the basal contact of the ultramafic unit with underlying basalt. Exploration by AAR testing these anomalies with eight RC holes failed to intersect nickel sulphides.
Further work on the gold exploration targets is planned.