HALLS CREEK COPPER PROJECT
(100% Cazaly Resources Ltd)
The Halls Creek Copper Project comprises a granted Mining Lease and Exploration licence covering an area of approximately 46km², near the township of Halls Creek in the East Kimberley region of Western Australia. The project covers part of the Halls Creek Mobile Zone which is highly prospective for a range of commodities including base metals, gold, diamonds and nickel.
The project hosts the Mount Angelo North Cu-Zn-Ag volcanogenic massive sulphide deposit and a large low grade copper deposit associated with a high level felsic intrusive (a granophyric microgranite) at the Mount Angelo Porphyry prospect. The project is prospective for the discovery of further similar copper and copper-zinc mineralisation.
Copper grades at Mt Angelo North include relatively extensive high grade zones with drill intercepts of up to; 57m @ 5.04% Cu, 43m @ 2.11% Cu and 13m @ 3.35% Cu. Significant gold and silver credits have also been reported in association with the mineralisation and include 1m @ 6,470 g/t Ag and 0.55 g/t Au.
The Mount Angelo Porphyry prospect located 2.5km to the south west of Mount Angelo North is also a significant large tonnage low grade target in comparison. Drilling has returned intercepts of up to 117m @ 0.32% Cu and 150m @ 0.30% Cu (CAZ: “Halls Creek Copper Project Joint Venture” – 30 October 2012 release to ASX).
Further exploration is being planned over the project including geochemistry, geophysics and RC drilling. This work will explore for other VMS and porphyry hosted mineralisation in the Halls Creek Copper Project. Cazaly previously completed detailed geophysics at the Halls Creek Copper Project including the acquisition of high-resolution airborne EM (Electro-Magnetic). This survey was flown using the high powered Fugro HELITEM® system.
The Mount Angelo North Cu-Zn-Ag deposit occurs within the Koongie Park Formation between two splays of the Angelo Fault. Two prominent limonitic copper gossans 60 m long and up to 18 m wide, occur 150 m apart. Boxworks are common and secondary copper minerals (malachite, azurite, cuprite) are apparent just below the surface. Copper and silver mineralisation is hosted in the lower part of a zone of interbedded volcanogenic metasedimentary rocks, carbonate, chert, and iron formation, and consists of two lenses of massive pyrite, chalcopyrite, with lesser amounts of pyrrhotite, magnetite, arsenopyrite, and galena, together with associated stringer zones. A pyritic halo surrounds the mineralised zone.
The deposit has all the hallmarks of a classic volcanogenic massive sulphide deposit. It is located close to surface and comprises a shallow zone of oxidized mineralisation overlying a zoned zinc-copper/zinc-copper sulphide blanket.