Technical Study
Rio Silver Inc. Reports: Initial Silver - Gold - Lead Recoveries of 85 %, 74 % and 77% Respectively From the Maria Norte in Central Peru
Rio Silver’s first metallurgical test shows 85% silver recovery – a clear step toward near‑term cash flow

Executive Summary
- On 2026‑04‑08 Rio Silver released initial metallurgical results from the Maria Norte property in central Peru.
- Two concentrates were produced from quartz‑lead veins with silver recoveries of 85% and gold recoveries of 74%, lead recovery 77%.
- Both concentrates have low arsenic (≈0.34%) and high metal grades (e.g., 53.6 oz/t Ag, 14.6 g/t Au in Concentrate #1).
- Management says the results “strengthen the company’s strongest operational/financial position to date” and confirm that a low‑capex toll‑milling route is viable.
- The company plans bulk sampling and concentrate generation through 2026‑2027, with further metallurgical optimisation for differing vein types.
Material Impact
| Aspect | Prior expectation | New information | Impact |
|---|---|---|---|
| Metallurgy | Only qualitative statements that the ore was “promising” and that a low‑arsenic concentrate could be produced. | Quantitative recoveries (85 % Ag, 74 % Au, 77 % Pb) with concrete assay data for two concentrates. | Positive material – validates processing plan, reduces technical risk, and supports near‑term cash flow from concentrate sales or toll‑milling contracts. |
| Financial position | Relied on royalty income (US$100k) and recent $3 M private placement. | No new capital raised, but the metallurgical data improve the valuation of existing assets, potentially unlocking additional non‑dilutive financing (e.g., milestone payments). | Positive – improves leverage for future funding without dilution. |
| Project timeline | Bulk sampling slated for 2026‑27; no hard data on recoveries. | Concrete results now allow the company to move from “de‑risking” to “execution” phase. | Positive – accelerates schedule, may bring earlier cash‑flow milestones. |
Overall, the news delivers genuinely new, quantitative technical data that materially improves the outlook for Maria Norte and therefore the share price.
RYO · Price
Company Overview
Rio Silver Inc. is a TSX‑V listed junior miner focused on high‑grade silver‑dominant projects in Peru’s Huachocolpa district. Its flagship Maria Norte property (~388 ha) hosts quartz‑lead veins with historic grades of 4 oz/t Ag and >3 g/t Au, plus significant lead and zinc. The company pursues a low‑capex development model: surface access, bulk sampling, and toll‑milling of concentrates rather than building its own processing plant.
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Apr 01, 2026 · 17:53