New shallow high-grade gold results, including up to 38 g/t gold, from the latest drilling at Bull Oak deposit within the Sandstone Gold Project of Alto Metals Ltd (ASX:AME) (Alto Metals Ltd (ASX:AME)) in WA have “exceeded expectations” and highlighted the deposit’s growth potential.
A step-out RC drilling program has extended shallow high-grade gold mineralisation outside the Bull Oak intrusive, with the mineralisation now defined over 400 metres and remaining open along strike and at depth.
The drilling, targeting extensions of mineralisation around the open pit, has extended the high-grade Kohinoor North Reef outside the current resource, confirming that mineralisation is not constrained to within the granodiorite.
High-grade results
Two holes (SRC985 and SRC973) drilled on the southeast and northwest side of the Bull Oak intrusive, are interpreted to have intersected the Kohinoor North Reef, returning shallow high-grade gold intercepts of 11 metres grading 4.1 g/t gold from 34 metres, including 1 metre at 38 g/t, and 10 metres at 1.5 g/t from 19 metres, including 4 metres at 3.1 g/t.
This has extended the reef by a further 100 metres along strike in both directions.
Other significant shallow high-grade gold intercepts outside the granodiorite include 7 metres at 4.7 g/t gold from 29 metres, including 1 metre at 28.9 g/t from 32 metres; and 3 metres at 10.2 g/t from 41 metres, including 1 metre at 29.5 g/t from 41 metres.
These latest assays further demonstrate the growth potential of Bull Oak, following the recently announced deeper extensional holes intersecting thick gold intercepts below the shallow pit.
Importantly, the results successfully extend the mineralisation outside the Bull Oak intrusive and outside the current resource, confirming that mineralisation is not constrained to within the granodiorite.
Alto says further assays remain pending from regional exploration.
Drill section at Bull Oak looking northeast, showing two of the shallow step-out holes outside the intrusion and the multiple stacked lodes below the open pit and current mineral resource.
"Exceeding expectations"
Alto managing director Matthew Bowles said: “Our drilling at Bull Oak has exceeded our expectations, with these latest results successfully demonstrating mineralisation is not just constrained within the granodiorite but also occurs as shallow high-grade reefs outside the Bull Oak intrusive and outside the current resource.
“The extension of the multiple stacked lodes within the intrusive laterally and at depth is a clear indication of significant mineralisation.
"Our next phase will include targeting the contact with the numerous BIF units and cross-cutting quartz reefs, which is driving the high-grade mineralisation we are also seeing in the drilling.
“With mineralisation defined over 400m and remaining open we believe there to be considerable near-term growth at Bull Oak.
"Concurrently, our low-cost regional work is ongoing, as we continue to evaluate new exploration concepts that have the potential to deliver further resource growth and new discoveries.”
Oblique drone image over the open-pit Bull Oak Mine, highlighting selected significant intercepts from the current program, outside the resource.
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