Alto Metals Ltd (ASX:AME) has delivered its best results yet from drilling targeting the Indomitable Camp within the company’s 100%-owned Sandstone Gold Project in Western Australia, this time including bonanza grades of up to 16 metres at 13.1 g/t gold.
The 5,000-metre first phase of reverse circulation (RC) drilling at Indomitable was designed to follow-up on high-grade structures identified during drilling in late 2022 and to test strike extensions of the existing mineralisation.
The latest assays from drill hole SRC918 returned shallow gold findings, including 3 metres at 62.2 g/t gold from 29 metres and 1 metre at 122.6 g/t gold from 29 metres.
SRC918 returned an overall 234 gram-metre intercept of 52 metres at 4.5 g/t gold from 7 metres.
Other highlights include:
- 5 metres at 7.9 g/t gold from 32 metres, including 1 metre at 23.4 g/t gold from 34 metres (SRC907);
- 5 metres at 3.0 g/t gold from 34 metres, including 1 metre at 11.6 g/t gold from 36 metres; and 14 metres at 2.2 g/t gold from 47 metres, including 4 metres at 5.5 g/t gold from 48 metres (SRC916);
- 6 metres at 3.0 g/t gold from 95 metres, including 1 metre at 11.0 g/t gold from 99 metres (SRC908), and
- 6 metres at 2.1 g/t gold from 46 metres, including 2 metres at 5.2 g/t gold from 48 metres (SRC904).
Plan view showing Indomitable deposits and RC high-grade drill results over a simplified geological interpretation.
More to come
Drilling completed by Alto over the last 12 months has extended the oxide gold mineralised footprint at Indomitable to over 3 kilometres in strike, which remains open in all directions.
These latest results support the company’s view that the size and scale of the oxide mineralisation at Indomitable is a much larger system than originally thought.
Given this, Indomitable has become a priority of the current exploration drilling.
While the company awaits further assays, preparations are underway for targeted drilling to test the strike and importantly, the depth potential of this high-grade mineralisation.
SRC918 chip tray from 20m-40m showing 15 of the individual metre intervals that returned 16m at 13.1 g/t from 19m gold.
Potentially a large system
“Indomitable has recently delivered some very impressive drill results and SRC918 returning 16 metres at 13.1 g/t gold from 19 metres is the best result Alto has drilled to date,” Alto managing director Matthew Bowles said.
“Following on from the significant increase to the mineral resource, these latest results give us the confidence that Indomitable will continue to grow and that it is emerging as a very large mineralised system.
“We are particularly excited by the size (of the) oxide footprint, now over 3 kilometres, which is often the key to finding high-grade gold deposits at depth.
“Our primary focus of the current exploration program remains at Indomitable and is to further test the strike of these interpreted controls and the orientation of the high-grade shoots within the fresh rock at depth.
“The team are continuing to interpret the geological data, refine our targeting models and deliver on our systematic approach to unlocking the value.
“With a number of assays from Indomitable still pending, shareholders can look forward to further updates in the coming weeks.”
Updated MRE
Alto recently announced a significant increase to its independent mineral resource estimate (MRE), outlining an optimised and pit-constrained 17.6 million tonnes at 1.5 g/t gold for 832,000 ounces within $2,500 per ounce pit-shells.
Significantly, the mineral resources are shallow with over 90% within 150 metres from surface.
The updated MRE included strong resource growth at Indomitable, with an almost tripling in size to 5.4 million tonnes at 1.2 g/t gold for 210,000 ounces.
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