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- Drilling continues to expand the known mineralisation at Bramaderos
- Latest two holes returning long and very robust intersections from surface
- All 12 holes assayed so far have returned long mineralised intersections
- Porotillo is adjacent to the pit-constrained Bramaderos mineral resource
Sunstone Metals (ASX: STM) has hit further long intervals of gold and copper mineralisation outside the existing resource at the Bramaderos project in Ecuador.
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The latest robust higher-grade results from Porotillo follow the strong intersections returned in the first 10 holes at Copete, Melonal and Porotillo.
The 5,000m diamond drilling program at Copete, Porotillo and Melonal continues to return consistently long intervals of gold and copper mineralisation from surface on the north side of the Porotillo hill.
The program utilising two rigs is defining the extent of disseminated and vein-hosted porphyry mineralisation developed within the upper carapace of widespread intrusion breccias at Porotillo.
MD, Patrick Duffy, said two centres of higher-grade mineralisation are being defined at Porotillo.
“This drilling program is aimed at converting more of the large Bramaderos exploration targets to resources, driving substantial growth in the current 3.6 million ounces of gold inventory,” Mr Duffy said.
“And as these two latest holes show, the current drilling campaign is delivering as planned, hitting 200m and 151m of mineralisation outside the resource and confirming the predictable nature of the Bramaderos porphyry geology.
“The geometry of mineralisation at Porotillo is now starting to take shape as we extend and infill the area of the strong gold-in-soil geochemical anomaly.”
Mr Duffy told shareholders that mineralisation across the drill grid is starting to connect into a continuous mineralised domain across the area of drilling, giving us confidence that we are defining another major mineralised centre on the property.
“With a set of 11 strongly mineralised holes drilled to date at Porotillo and Copete and supplemented by six mineralised trenches, we are highly confident that we will significantly expand the Bramaderos Resource upon completion of the current phase of drilling and additional trenching,” he added.
“This is an exciting time for Sunstone and its shareholders as we continue derisking the project and increasing its value with more mineralisation being discovered with each new hole.”
Recently received assay results have revealed that the holes are consistently mineralised throughout, with bulk intersections being 200m at 0.62 grams per tonne (g/t( gold equivalent (AuEq) from surface, including 19m at 1.01 g/t AuEq from surface and 151m at 0.54 g/t AuEq from surface, including 26m at 0.84 g/t AuEq from surface.
STM is down 2.59% to 28.3¢. Mkt cap $65.79M.
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