Geomechanics.io

  • Free Tools
Sign UpLog In

    Geomechanics.io

    Geomechanics, Streamlined.

    © 2026 Geomechanics.io. All rights reserved.

    Geomechanics.io

    CMRR-ioGEODB-ioHYDROGEO-ioQCDB-ioFree Tools & CalculatorsBlogLatest Industry News

    Industries

    MiningConstructionTunnelling

    Company

    Terms of UsePrivacy PolicyLinkedIn
    Projects
    Contract Award

    Eldorado’s C$100M Amex stake: Perron project economics for mine planners

    June 10, 2026|

    Reviewed by Tom Sullivan

    Eldorado’s C$100M Amex stake: Perron project economics for mine planners

    First reported on MINING.com

    30 Second Briefing

    Eldorado Gold is committing a further C$20.6 million to Amex Exploration to restore its 27% stake, taking its total investment close to C$100 million as the Perron gold project in Quebec advances on the back of a strong April feasibility study. Perron’s stage-one plan outlines 147,000 oz/y gold output for five years at an all-in sustaining cost of $910/oz, 1.9 Mt of reserves grading 12.1 g/t at the Champagne zone, initial capex of C$193.9 million and a post-tax NPV5 of C$1.1 billion at $3,500/oz gold. The project is fully permitted for a 40,000-tonne bulk sample, is targeting toll milling at nearby facilities such as Eldorado’s Lamaque-Sigma complex, and has funding in place for up to 100,000 metres of drilling across the expanded 570 km² land package.

    Technical Brief

    • Feasibility study assumes a 17.5‑year mine life, with two years of pre‑production development.
    • Proven and probable reserves at Champagne zone total 1.9 Mt at 12.1 g/t Au (774,000 oz).
    • Post‑tax payback is modelled at 0.5 years at US$3,500/oz gold price.
    • Average operating cost over life of mine is estimated at US$617/oz, excluding sustaining capital.
    • Bulk sample permit allows extraction of 40,000 t, with portal and declines expected in ~18 months.
    • Stage one envisages five years of toll‑milling operations before potential transition to owner‑operated onsite processing.
    • Flow‑through and hard‑dollar financings (~C$37.3M) support up to 100,000 m of drilling through 2026.
    • Current focus includes a 15,000 m drill programme at Perron West (Ontario) with two rigs, expanding.
    • Land position has expanded from 46 km² to 570 km² contiguous ground, including 60 km of strike.

    Our Take

    The very high post‑tax IRR (114%) and short 0.5‑year payback period reported for Perron are unusually strong compared with most gold projects in our mining corpus, suggesting that even moderate capex or schedule creep could be absorbed without destroying project economics, an important buffer in Quebec’s tightening labour and contractor market.

    Geotechnical Software for Modern Teams

    Centralise site data, logs, and lab results with GEODB-io, CMRR-io, and HYDROGEO-io.

    No credit card required.

    • Save and export unlimited calculations
    • Advanced data visualisation
    • Generate professional PDF reports
    • Cloud storage for all your projects

    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

    Related Articles

    South32’s 61% Sierra Gorda reserve lift: life-of-mine and plant planning notes
    Mining
    about 10 hours ago

    South32’s 61% Sierra Gorda reserve lift: life-of-mine and plant planning notes

    South32 has lifted the Sierra Gorda ore reserve in Chile by 61% to 1.1 billion tonnes at 0.39% total copper, 0.016% molybdenum and 0.06 g/t gold (0.46% CuEq), extending reserve life by about five years to 2045 after 85,000 metres of infill drilling from 200 holes. The updated MRE now stands at 1.87 billion tonnes at 0.37% copper (0.44% CuEq), with the orebody remaining open at depth and additional potential at the Catabela Northeast target. A fourth grinding line, approved in July, is expected to lift copper output by roughly 30% from 2031, reinforcing long-term concentrator planning and infrastructure requirements.

    Agnico’s C$57M Radisson stake: O’Brien gold mine access and PEA lens for engineers
    Mining
    about 10 hours ago

    Agnico’s C$57M Radisson stake: O’Brien gold mine access and PEA lens for engineers

    Agnico Eagle Mines is investing C$57.2 million in Radisson Mining Resources for a 10.5%–14.9% stake to advance underground access and infrastructure at the historic O’Brien gold mine in Quebec’s Bousquet-Cadillac camp along the Larder Lake-Cadillac Break. Funding will support an access ramp, underground workings, surface facilities and water management, complementing Radisson’s fully funded 140,000-metre surface drilling and a planned 11-year underground operation with toll milling at IAMGOLD’s Doyon plant. A July 2025 PEA at US$3,300/oz gold pegs O’Brien’s after-tax NPV5 at C$871 million with a 74% IRR, underpinned by recent intercepts such as 5.1 m at 316.31 g/t from 823 m.

    Top of Mine: Costa’s AI-through-mining thesis and what it means for project teams
    Mining
    about 10 hours ago

    Top of Mine: Costa’s AI-through-mining thesis and what it means for project teams

    Otavio (Tavi) Costa, founder and CEO of Azuria Capital, argues that mining equities are currently the cheapest way to gain AI exposure, as sovereign funds and governments re-rate the sector and mid-tier producers move to secure “strategic reserves” by acquiring high-quality junior assets. He links this to a macro backdrop where global debt has returned to World War II levels but only about 3% of the US Treasury market is now backed by gold, versus roughly 50% then. With spot gold at $4,673.20/oz, Costa expects reserve depletion, weak discoveries and a “global monetary race towards gold” to drive prices substantially higher.

    Related Industries & Products

    Mining

    Geotechnical software solutions for mining operations including CMRR analysis, hydrogeological testing, and data management.

    CMRR-io

    Streamline coal mine roof stability assessments with our cloud-based CMRR software featuring automated calculations, multi-scenario analysis, and collaborative workflows.

    HYDROGEO-io

    Comprehensive hydrogeological testing platform for managing, analysing, and reporting on packer tests, lugeon values, and hydraulic conductivity assessments.

    GEODB-io

    Centralised geotechnical data management solution for storing, accessing, and analysing all your site investigation and material testing data.

    AllGeotechnicalInfrastructureHazardsEnvironmental