Predictive Discovery Ltd (ASX:PDI) has identified nine, high-priority new gold targets within the Bankan Project in Guinea following a 3,384-line kilometre airborne magnetic and radiometric survey.
The survey was conducted by New Resolution Geophysics (NRG) in February covering the Bankan project area on a 100 metre-line spacing.
Geophysical data has been processed and an initial geological interpretation and target generation program has been carried out with images showing lithological and structural features that may have controlled the localisation of the known gold mineralisation.
A particularly notable interpreted regional geological feature is a 35-kilometre-long north-northwest orientated structural trend that traverses all four permits and passes to the east of the NE Bankan gold deposit.
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Aeromagnetic map showing intersections of northwest and east northeast magnetic linears and the location of NE Bankan auger-defined gold footprint.
“Excellent progress”
Managing director Paul Roberts said: “As we continue to make excellent progress with deeper drilling at NE Bankan in preparation for the maiden resource estimate, we are increasing our exploration on gold targets across the Bankan Project where there is enormous potential to make new gold discoveries in areas which have never been drilled before.
“The recent aeromagnetic survey has demonstrated why the NE Bankan deposit is in such prospective gold ground and delivered us much a better approach for selectively targeting new, NE Bankan-like prospects along strike to the north and south.
“Some of the new targets are coincident with shallow artisanal mine pits similar to the workings we encountered over part of the NE Bankan deposit prior to the drill discovery.”
RC drill results
Predictive has also received the results of six reverse circulation (RC) drill holes totalling 735 metres at Bankan Creek, which have extended the strike length of the known mineralisation to more than 300 metres.
The holes were part of a seven-hole program designed to test for northern and southern extensions to the known Bankan Creek gold mineralised system and were drilled to a maximum down-hole length of 150 metres.
Encouraging intersections were obtained at the southern end of the prospect including:
- 17 metres at 1.08 g/t gold from 18 metres;
- 6 metres at 2.1 g/t from 49 metres;
- 8 metres at 0.56 g/t from 92 metres ;
- 8 metres at 2.88 g/t from 9 metres, including 1-metre at 14.9 g/t; and
- 3 metres at 3.24 g/t from 90 metres.
Drilling was carried out using a large, multipurpose (RC-DD) drill rig operated by Capital Drilling.
Samples were assayed at the SGS laboratory in Bamako, Mali.
Next steps
Predictive has now deployed two auger rigs to follow up on the new targets with more than 15,000 metres of auger drilling programmed for completion in the coming months with an initial focus on the AG1, AG2 and KA1 targets.
Auger is fast, relatively cheap, and was the drilling discovery method for the NE Bankan deposit, providing the company with strong confidence in the effectiveness of auger for making new discoveries at the Bankan Project.