Corktree Joint Venture Copper Project - Western Australia

Corktree is a joint venture with Giralia Resources NL whereby PacMag may earn up to a 75% interest.

 

 

Corktree is on the western edge of the Earaheedy Basin. A strong gravity gradient marks the boundary between Yelma Formation dolomites and basement Thaduna Formation greywackes. The area has previously been explored by WMC and CRA, whose drilling returned samples including 24 metres @ 0.22% copper, 16 metres @ 0.26% copper, and 3 metres @ 1.6% copper.

 

 

The primary source of the widespread secondary copper mineralisation at Corktree has not yet been found, nor has the near-surface anomaly been closed off. The location of the prospect at the edge of a mid-Proterozoic sedimentary basin abutting a basement high, and the presence of metalliferous inclusions in hydrocarbons, suggest potential for sediment hosted base metals mineralisation.

Two immediate targets for follow up have been defined including the Corktree Well Prospect and the Merah Prospect (located 4.5 kilometres east of Corktree). At Corktree previous drilling identified extensive near surface copper mineralisation which remains open. At the newly defined Merah Prospect, recent surface geochemical sampling has returned anomalous copper results in a rock sequence equivalent to that hosting copper mineralisation at CorkTree.

 

IP Chargeability Pseudosections, (hot colours) indicate interpreted sulphide zones. The anomaly on right hand side of image is coincident with near surface copper geochemical anomaly defined by RAB drilling and is open, shallower and stronger to the north-west (RHS of back section)

 

Subject to the availability of drill rigs contracted to other companies in the district, PacMag will undertake a drill program to test the strike extensions to Corktree Prospect and to test for the source of anomalous surface copper geochemistry at the Merah Prospect.