Aircore, reverse circulation and diamond core drilling was undertaken and returned high-grade intersections of up to 27.4 /t gold.
The drilling programs have confirmed Seko’s growth potential, with several priority targets outlined for follow-up assessment.
Further assay results are pending from drilling completed at the Selingouma and Lomona prospects, 10 kilometres south and 3 kilometres east of Seko, respectively.
“Structurally complex gold system”
Oklo managing director Simon Taylor said the latest results confirmed his long-held view that excellent potential remains to grow the extent of Seko.
Taylor said: “Follow-up drilling will commence immediately following the wet season to further assess these new targets and explore for additional extensions and repetitions.
“In the meantime, work is progressing on constructing 3D geological models of the Seko gold mineralisation to further assist in our understanding of this extensive and structurally complex gold system.”
Near existing mineralisation
The new gold zones identified are adjacent to and along strike of the SK1, SK2 and SK3 prospects.
Highlighted results include:
10 metres at 2.33 g/t gold from 39 metres, including 4 metres at 4.25 g/t;
4 metres at 14.12 g/t from 48 metres, including 2 metres at 27.4 g/t;
9 metres at 2.73 g/t from 84 metres, including 2 metres at 4.7 g/t;
10 metres at 1.37 g/t from 62 metres, including 2 metres at 4.47 g/t;
2 metres at 9.15 g/t from 8 metres and 1 metre at 16.4 g/t from 23 metres; and
4 metres at 2.66 g/t from 88 metres and 4 metres at 2.01 g/t from 38 metres.
New gold zones
A new gold target 300 metres to the north of SK2 has been delineated, with exploration encountering altered and sulphide-mineralised breccia similar to SK2.
Immediately south of SK1, the company made a high-grade intersection of 2 metres at 9.15 g/t gold, extending the previously defined mineralisation along strike.
Anomalous gold was intersected a further 600 metres south of SK1, returning 16 metres at 0.82 g/t, including 4 metres at 1.38 g/t.
West of SK1 the company intersected high-grade gold of 4 metres at 14.12 g/t, indicating potential for a new high-grade zone.
3D models generated using Leapfrog
The results have given Oklo positive indications that the extensive Seko gold system remains open, with several new priority targets marked for follow-up evaluation after the wet season.
Oklo is compiling 3D geological models of the gold mineralisation at Seko using proprietary Leapfrog software to assist in understanding this structurally complex gold system.
The models will also assist in planning the next phase of exploratory drilling.
Oklo’s flagship Dandoko project is within the Kenieba Inlier of west Mali, about 30 kilometres east of B2Gold’s 7.1-million-ouncr Fekola project and 50 kilometres south-southeast of Barrick Gold’s 12.5-million-ounce Loulo project.
The company currently holds about 500 square kilometres of prospective ground in this emerging world-class gold region.
At Dandoko, extensive gold anomalies have previously been outlined by auger drilling long a 12-kilometre-long corridor.
The potential of this corridor to host large gold mineralised systems has been demonstrated by the recent drilling success at Seko and several other nearby prospect areas.