Northwire Canada EditionSunday, September 13, 2026
Sign inSubscribe
Northwire
⌕
GOLD 4408.90 +0.0% SILVER 65.19 +0.4% COPPER 6.55 +0.0% OIL 100.05 −2.4% PALLADIUM 1323.90 +2.3% PGZ 0.170 +3.0% TMQ 4.55 −1.3% SLI 3.08 −1.0% ROX 0.050 −9.1% USHA 0.045 +0.0% ALGR 0.710 +2.9% MINE 0.120 −4.0% KC 0.330 +4.8% EMO 0.335 +0.0% CCM 0.700 +4.5% MAI 5.97 −0.7% PPM 0.015 +0.0% CRE 0.370 +10.4% MNO 1.87 +0.5% FEO 0.810 +3.9% LBNK 0.680 −4.2% GOLD 4408.90 +0.0% SILVER 65.19 +0.4% COPPER 6.55 +0.0% OIL 100.05 −2.4% PALLADIUM 1323.90 +2.3% PGZ 0.170 +3.0% TMQ 4.55 −1.3% SLI 3.08 −1.0% ROX 0.050 −9.1% USHA 0.045 +0.0% ALGR 0.710 +2.9% MINE 0.120 −4.0% KC 0.330 +4.8% EMO 0.335 +0.0% CCM 0.700 +4.5% MAI 5.97 −0.7% PPM 0.015 +0.0% CRE 0.370 +10.4% MNO 1.87 +0.5% FEO 0.810 +3.9% LBNK 0.680 −4.2%
Technical Study Routine +

Cerro de Pasco Resources Advances Metallurgical Test Program; Evaluates Two-Concentrate Flowsheet for Silver-Bearing Pyrite and Base Metals

Cerro De Pasco’s Quiulacocha tailings pilot yields high silver recovery ahead of the first resource estimate to validate scale.

By The Northwire Desk — AI Analysis Jun 09, 2026 · 09:44 CDPR · 0.53 Cerro De Pasco Resources Inc.
Executive Summary
  • The June 9, 2026 release details metallurgical test results for the Quiulacocha Tailings Reprocessing Project in Peru.
  • Testing supports a conceptual two-concentrate flowsheet targeting a high-grade pyrite concentrate and a base metal concentrate, both carrying silver.
  • Mini-pilot results demonstrate >92.5% total sulphide recovery and ~94% silver recovery into a bulk concentrate.
  • Pyrite represents >50% of the tailings, positioning the project to potentially supply an alternative sulphur-bearing feedstock for industrial markets.
  • Bench-scale recovery ranges include 87–95% Ag, 93–99% pyrite, 62–82% Zn, and 60–78% Pb.
  • Head grades from selected composites show Ag at 44.65–55.62 g/t, Zn at 1.13–1.65%, and Pb at 0.35–1.14%.
  • Exploratory work is underway to concentrate gallium from silicate gangue and indium from base metals/pyrite streams, with a consolidated update expected in H2 2026.
  • Next steps include mini-plant optimization, Phase 2 drilling, and the anticipated first NI 43-101 Mineral Resource Estimate.
Material Impact
  • The company has systematically advanced from FY2025 earnings and the sale of the non-core Santander mine (Apr 2025) to a $22.7M financing led by Eric Sprott (Nov 2025), followed by a DFC development funding agreement (Mar 2026) and an AMSAC surface-access agreement (Mar 2026).
  • The June 2026 metallurgical results validate the technical feasibility of the proposed flowsheet, confirming that silver and sulphides can be effectively recovered into a bulk concentrate.
  • This progress de-risks the technical path and aligns with the company's stated milestones, but it is an incremental follow-up to previous announcements rather than a market-moving event.
  • The stock has traded in a $0.50–$0.65 range since May 2026, indicating that the market views this as routine project development. Without a formal resource estimate or production guidance, the financial impact remains speculative.
  • The news is Routine - Positive. It confirms execution capability but does not alter the valuation model until resource definition and permitting milestones are met.
CDPR · Price
Company Overview
  • Cerro de Pasco Resources Inc. trades on the TSX Venture (CDPR) and OTCQX (GPPRF).
  • Flagship asset: Quiulacocha Tailings Reprocessing Project, located in the Pasco Region of Peru.
  • Secondary asset: Excelsior Stockpile at the El Metalurgista Concession, holding a 30.1 Mt Inferred Mineral Resource.
  • Project stage: Exploration/Feasibility. No established NI 43-101 resource exists for Quiulacocha.
  • Extraction method involves tailings reprocessing via excavation, wet pumping, and hauling, with estimated costs of $1–$2 per ton.
  • Target commodities include silver, zinc, lead, copper, gold, gallium, and indium.
Read the original news release →

More from Cerro De Pasco Resources Inc.

Apr 29, 2026 · 07:00

OTCQX Upgrade Validates Compliance, But Project Catalysts Remain the True Valuation Drivers

Regulatory Apr 13, 2026 · 08:03

Cerro de Pasco Aligns Disclosure Ahead of June Drill Start on Peru Tailings

Production / Operations Mar 26, 2026 · 18:17

Cerro de Pasco has Quiulacocha tailings facility access

Other Mar 26, 2026 · 09:04

Unlocking the World’s Largest Above-Ground Metal Resource through Environmental Remediation

Other Mar 02, 2026 · 09:42

U.S. Government Backing Validates World’s Largest Above-Ground Metal Resource

Financings Jan 09, 2026 · 17:28

Cerro de Pasco Resources talks 2025 work at Quiulacocha

Production / Operations