Big Bell North Project
The Big Bell North Project comprises 125.5km² of exploration license applications 26km northwest of Cue. It covers parts of the Meekatharra-Wydgee greenstone stratigraphy comprising intercalated basalt and ultramafic, sediments and felsic volcanic rocks intruded by quartz feldspar porphyry, tonalite and granite along strike from the Big Bell Gold mine.
This includes the Chunderloo Shear Zone, which is locally referred to as the Big Bell shear. The Carbar Fault, which divides the Weld Range and Meekatharra-Wydgee greenstone belts, either merges with the Chunderloo Shear Zone in the northeast corner of the project area or passes just to the east of the project. The hinge zone of the Big Bell Anticline, an open N-plunging regional anticline, and several other major zones of north to north-easterly trending shear-related deformation, including the Cuddingwarra Shear, the Lenlee structure and the BT Shear, is also covered. Large areas of the prospective stratigraphy are obscured by a thick, variable regolith that has hindered previous explorers leaving much of it untested.
Dilation sites associated with closure of the Big Bell Anticline and layer-parallel shearing on the eastern flank in the juxtaposition to the Big Bell Gold Mine form priority targets. Other key targets include the intersection of the Chunderloo Shear Zone with the Carbar Fault, and mineralisation associated with kinks and jogs on several secondary structures that truncate stratigraphy within the project area.
Significant surface gold has been won from the Curtis Find, one of two known small gold deposits within the project, the other being Behring Bore, without locating any primary source of mineralisation. The extensions to both known deposits form obvious exploration targets.
Four of the 23 structural targets identified by Jindalee in aeromagnetic data have been drill tested. The best intersection was 5 metres at 154 ppb gold from 25 metres (BBNR02) on the eastern side of the apex closure of the Big Bell Anticline confirms the locality’s prospectivity.
