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8 stories mentioning ASX:STMUpdated 4d ago

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Asia

Sunstone Metals Encounters 368-Meters-Wide Mineralized Intersection During Ecuador Project Resource Growth Drilling, Shares Up 5%

Sunstone Metals (ASX:STM) encountered a 368-meter-wide mineralized intersection from the final two drill holes of a 30-hole resource growth program at its Bramaderos project in Ecuador, according to a Wednesday Australian bourse filing.The 368-meter intersection graded 0.45 grams per tonne of gold-equivalent. The second drill hole intersected 9.4 meters grading 17.23 g/t of gold-equivalent.Its shares rose 5% in recent trading on Wednesday.

ASX:STM
Asia

Sunstone Metals Says Ecuador Project Drilling Hits Gold, Copper Mineralization Outside Existing Mineral Resource, Shares Up 5%

Sunstone Metals (ASX:STM) said the latest two drill holes completed at the southern end of the Melonal porphyry system returned gold and copper from outside the existing mineral resource at the Bramaderos project in Ecuador, according to a Thursday Australian bourse filing.It encountered sub-intervals of 296.7 meters grading 0.43 grams per tonne grade of gold-equivalent from surface, as well as 102 meters grading 0.52 g/t grade of gold-equivalent from surface.Sunstone also expanded the surface sampling program by excavating trenches and cutting channel samples from outcrops in surface ravines across all three porphyry centers that lie outside the existing mineral resource.Its shares jumped 5% in recent trading on Thursday.

ASX:STM
Asia

Sunstone Metals Reports Higher Than Expected Copper, Gold Recoveries at Ecuador Project

Sunstone Metals (ASX:STM) said a metallurgical test work program on the Brama-Alba-Melonal porphyry deposits at its Bramaderos project in southern Ecuador has returned revised average recoveries of 80% for copper and 93% for gold, above the scoping study assumptions of 75% and 85%, respectively, according to a Tuesday Australian bourse filing.The company said locked-cycle flotation testing achieved copper recoveries of up to 83% into concentrates grading about 18% copper, the filing added.The company's shares closed 4% up on Tuesday.

ASX:STM
Asia

Sunstone Metals Intersects Gold, Copper Intervals Beyond Mineral Resource at Ecuador Project; Shares Up 5%

Sunstone Metals (ASX:STM) confirmed that recent drilling at the Porotillo and Copete prospects in Ecuador returned wide gold and copper intervals outside the Bramaderos project mineral resource, according to a Tuesday filing with the Australian bourse.Drill hole PTDD020 on the southern edge of Porotillo returned nearly 176 meters grading 0.5 grams per tonne of gold equivalent from surface, including almost 59 meters at 0.66 g/t gold equivalent from surface, the filing said.The results bring the total number of mineralized holes outside the current resource boundary to 26, supporting a potential resource update, per the filing.Shares rose 5% in midday trade Tuesday.

ASX:STM
Asia

Sunstone Metals Identifies Wide Gold-Copper Mineralization Zones at Ecuador Project

Sunstone Metals (ASX:STM) identified wide zones of gold-copper mineralization during a recent drilling at its Bramaderos Gold-Copper Project in southern Ecuador, according to a Thursday Australian bourse filing.The results were of up to 92 meters at 0.66 grams per tonne (g/t) gold equivalent (AuEq), including 0.42 g/t gold and 0.14% copper, with a higher-grade interval of 20 meters at 0.91 g/t AuEq from 0.66 g/t gold and 0.15% copper.The company said assays from holes at Porotillo reinforce the extensive mineralization encountered in five trenches and expand the area being defined by drilling, with 16 of a 28-hole program now completed and additional assays pending.The drill program aims to upgrade to resources a significant portion of the Copete-Porotillo exploration target of 135 to 180 million tonnes at 0.40 to 0.60 g/t AuEq for 1.7 to 3.5 million ounces AuEq, the filing added.

ASX:STM
Asia

Sunstone Metals' Drilling at Ecuador Project Intersects Wide Intervals of Gold, Copper Mineralization; Shares Jump 4%

Sunstone Metals (ASX:STM) intersected wide intervals of gold and copper mineralization in the second set of four holes of a drilling program across the Porotillo, Copete, and Melonal porphyry systems within the Bramaderos project in Ecuador, according to a Thursday Australian bourse filing.It intercepted 250.4 meters at 0.43 grams per tonne grade of gold-equivalent, including 0.25 g/t grade of gold and 0.11% copper from surface at Melonal.It also encountered intercepts of 200.5 meters at 0.42 g/t grade of gold-equivalent, including 0.25 g/t grade of gold and 0.10 % grade of copper, as well as 140.4 meters at 0.45 g/t grade of gold-equivalent, including 0.25 g/t grade of gold and 0.12 % grade of copper at Porotillo.Its shares rose 4% in recent trading on Thursday.

ASX:STM
Asia

Sunstone Metals Says Ecuador Gold Project Scoping Study Finds Initial 23-Year Mine Life

Sunstone Metals (ASX:STM) said a scoping study for its Bramaderos gold copper project in Ecuador has outlined an initial 23-year mine life producing 135,000 gold equivalent ounces per year for the first eight years, according to a Tuesday Australian bourse filing.The company said the study returned a post-tax net present value of $900 million at a gold price of $3,500 per ounce, with an all-in sustaining cost (AISC) averaging $1,499 per ounce after credits.Sunstone Metals said the operation is a conventional single open pit feeding a 10-million-tonne-per-year plant at a life-of-mine strip ratio of 1.4, with capital payback estimated at 34 months at $3,500 per ounce gold and 19 months at spot price.The company said potential for significant growth in inventory could underpin a possible stage 2 expansion.

ASX:STM
Asia

Sunstone Metals Says Drilling at Ecuador Project Intersects Wide Gold-Copper Mineralization, Shares Jump Over 16%

Sunstone Metals (ASX:STM) said its new diamond drilling program at the Copete porphyry system within the Bramaderos project in Ecuador intersected wide intervals of gold-copper mineralization within the first two drill holes, according to a Tuesday Australian bourse filing.It hit intercepts of 200 meters at 0.45 grams-per-tonne grade of gold-equivalent, including 0.33 g/t grade of gold and 0.07 % copper, as well as 162.2 meters at 0.32 g/t grade of gold-equivalent, including 0.20 g/t grade of gold and 0.07 % copper.Its shares jumped 16% in recent trading on Tuesday.

ASX:STM

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