Assays from two step-out diamond drill (DD) holes have confirmed down-dip continuity to 170 metres and mineralisation remains open.
These holes are from an expanded drill program of more than 3,000 metres over the northern portion of SK1 at Seko.
Very high grades
Within the 30-metre intersection from 135 metres was 7 metres at 30.69 g/t gold from 142 metres.
Another intersection of 13 metres at 15.80 g/t from 91 metres included 4 metres at 46.65 g/t from 92 metres.
Diamond core from the 13-metre intersection from 91 metres showing altered sediments hosting gossanous zones.
Shares have been up as much as 25% to an intra-day high of 28.2 cents, a new 12-month high and up from 9.9 cents on October 18, 2019.
Oklo’s managing director Simon Taylor said: “These extremely impressive results from the two step-out DD holes in the north of SK1 continue to grow the size of this emerging zone of high-grade gold mineralisation.”
Expanded drill program
The expanded program is in addition to the 10,000-metre resource definition drilling program at Seko, comprising infill aircore (AC), reverse circulation (RC) and DD drilling.
This is in advance of a maiden mineral resource estimate scheduled for completion early in the June quarter of 2020.
All assay results have been reported from the initial phase of shallow AC and RC resource definition drilling at Seko with 57 holes for 5,045 metres.
This tested gold mineralisation to depths averaging 85 metres and up to 184 metres.
Deeper drilling completed
A deeper RC and DD drilling phase has recently been completed of 18 holes for 3,365 metres.
The initial phase returned an intersection of 47 metres at 10.95 g/t from 48 metres at the northern end of SK11 after which the company approved an additional 3,000 metres, resulting in 38 holes for 3,804 metres.
New assays expected
Taylor said: “Our focus is now on the next batches of assay results from the step-out holes drilled immediately along strike to the northeast and southwest.
“We also look forward to reporting on our progress with the deeper RC and DD resource drilling program at Seko along with the reconnaissance AC drilling to the south of SK1 towards the Koko discovery.”
Location of Seko gold trends within the Dandoko gold corridor.
Further assays are expected in coming weeks from the deeper RC and DD resource definition drilling at SK2 and SK3 and the expanded program over the northern extension of SK1.
Drilling of untested zone
AC drilling is underway over the untested zone between SK1 and Koko, about 2 kilometres to the south. Planning is also underway for additional drilling at depth and along strike over the northern extension of SK1 following the encouraging initial results.
Seko comprises five coherent auger gold trends (SK1-5) with a combined strike length of about 7 kilometres.
Location of Oklo’s gold projects in west Mali.
Dandoko is within the Kenieba Inlier of west Mali, about 30 kilometres east of B2Gold’s 7.1 million-ounce Fekola project and 50 kilometres SSE of Barrick’s 12.5 million-ounce Loulo project.
The company holds around 500 square kilometres of highly prospective ground in this emerging world-class gold region.
Extensive gold anomalies have previously been outlined by auger drilling along the 12 kilometre-long Dandoko gold 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.