Tinka Resources updates Silvia Gold-Copper Project, Peru
Tinka Resources Limited [TSXV: TK; OTCQB: TKRFF] provided an update of the exploration activities at the Silvia gold-copper property in Peru.
Highlights of initial drilling at Silvia: Initial 1,400-metre diamond drill program completed. A four-hole, 1,400-metre diamond drill program which began in late October 2025, was completed in early January 2026. The drill cores are being assayed for gold, copper and pathfinder elements at a commercial laboratory in Lima. Assays are awaited.
Visible copper mineralization: Copper in the form of chalcopyrite was observed in all holes. Visible chalcopyrite of potentially economic grade occurs over relatively narrow intervals up to a few metres in thickness and is concentrated on or near the contacts between monzonite intrusive dikes and limestone associated with skarn alteration. Chalcopyrite is associated pyrite, magnetite and minor pyrrhotite. Molybdenite is also present in some intersections but typically not directly associated with visible chalcopyrite.
Copper increasing with depth: There are multiple intervals of copper mineralization, and there appears to be a tendency for the chalcopyrite mineralization to increase in intensity with depth, to be confirmed by the assay results.
Drill rig remains on site: The portable drill rig will remain on site for the wet season until the end of April at the earliest, or until a decision is made to continue the drilling program subject to results of an upcoming geophysical program.
Next steps: Assay results for the four-hole drill program are expected Q1 2026. A ground geophysical survey using induced polarization (IP) and/or magnetotellurics (MT) is planned for Q2 2026 targeting zones of greater sulphide concentrations.
Dr. Graham Carman, President and CEO of Tinka, stated: “The first drill program at Silvia has been completed at Silvia NW Area A, one of three targets at the Silvia gold-copper property. Four holes were drilled to depths of between 250 metres and 450 metres targeting gold – copper mineralization sampled at surface. Copper mineralization appears to be relatively narrow but we are encouraged by the confirmation of its presence in the subsurface.
“There are multiple intervals of visible copper sulphides in some of the holes, and there appears to be a tendency for copper abundance to increase with depth, to be confirmed by assays. We are planning a ground geophysical program to follow-up this drilling once access allows after the wet season. The geophysical surveys are intended to highlight areas of greater sulphide concentrations both laterally removed from Area A and at depth, including at Areas A and B.”
Four diamond drill holes were completed at Silvia NW Area A between late October 2025 and early January 2026. Three of the holes (S25-001, 002 and 004) were drilled on one section line with holes inclined to the west. A fourth hole (S25-003) was drilled on a separate section approximately 100 metres to the north.
There is widespread and pervasive skarn alteration in the intrusive rocks (quartz monzonite) and limestone (Jumasha Formation) in the drill holes. Skarn typically consists of green and brown garnet with lesser pyroxene, vesuvianite and potassium feldspar (prograde alteration) which is overprinted by variable amounts of chlorite, quartz, amphibole, magnetite and carbonate (retrograde alteration) in veins and replacements. Exoskarn refers to skarn in limestone, whereas endoskarn refers to alteration in monzonite intrusions (mostly dikes). Sulphides including chalcopyrite, are typically associated with the retrograde alteration. On the edges of the skarn, marble and recrystallised limestone predominate.
Tinka is an exploration and development company focused on base and precious metals projects in Peru. The company’s flagship property is the Ayawilca zinc-silver-tin project which has substantial mineral resources of zinc (with silver-lead credits), the Colquipucro silver deposit and the Tin Zone in separate areas.
The nearby Silvia gold-copper project is the current focus of exploration drilling. The company filed a NI 43-101 technical report on an updated PEA for the Ayawilca Project on April 15, 2024.
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