Blackthorn Resources Limited (ASX:BTR) (“the Company” or “Blackthorn Resources”) has received further copper and gold assay results from the Mumbwa Project in Zambia. The Company is targeting Iron Oxide Copper-Gold (IOCG) style of mineralisation in the Mumbwa District, which is located approximately 200 km west of the capital Lusaka.
The current Phase 5 program commenced in August 2011 targeting a series of ‘infill’ and ‘step-out’ drill holes over the Kitumba mineral resource area, as well as ‘scout’ drilling a newly identified anomaly at Mutoya, which is located approximately 6km north-west of Kitumba.
Phase 5 drilling has completed 16 drill holes for a total of 8,184.59 meters. There are 4 drill holes remaining for the program with 3 holes underway. It is projected the drilling component of the program would be finalised in mid-March 2012. Ongoing receipt of assay results will continue through April/May in preparation for a review of the mineral resource estimate.
The receipt of copper assay results for S36-032 has confirmed the continuation of an enriched horizon of copper mineralisation with the adjacent drill hole S36-033 which is located 50m towards the west. It is considered this horizon represents a mineralised copper enriched supergene blanket which is situated beneath a leached upper horizon that is variably ranging in thickness from ~100m up to 200m from surface.
The rock units in drill core contain variably iron-rich brecciated syenite, diorites and granites that are typically highly oxidised. They contain malachite, native copper, chalcocite and chalcopyrite as the main copper mineral constituents. Other mineralogical studies of drill core samples are being conducted to further assess the rock characteristics.
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