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
    AllGeotechnicalMiningInfrastructureMaterialsHazardsEnvironmentalSoftwarePolicy
    Projects

    Cerrado’s stalled Lagoa Salgada copper-zinc project: hydrology and permitting lens for engineers

    April 2, 2026|

    Reviewed by Joe Ashwell

    Cerrado’s stalled Lagoa Salgada copper-zinc project: hydrology and permitting lens for engineers

    First reported on MINING.com

    30 Second Briefing

    Cerrado Gold has filed an injunction against Portugal’s environmental regulator APA over the rejection of its Lagoa Salgada copper-zinc project in the Iberian pyrite belt, arguing procedural flaws including an eight-day instead of legally required 10-day consultation and a late-stage objection over a deep, sulphide-contaminated third aquifer earmarked for mine water use. Municipal authorities near Grândola cite conflicts with land-use plans and water risks, despite the project’s Project of National Interest status and extensive hydrological studies. CEO Mark Brennan still targets first production in 2028, with cash flow from the 50,238 oz Au-eq/y Minera Don Nicolás mine and potential offtake/streaming expected to fund development.

    Technical Brief

    • Lagoa Salgada is a volcanogenic massive sulphide deposit in Portugal’s Iberian pyrite belt with multiple Cu-Zn-Pb-Ag zones.
    • Cerrado acquired Lagoa Salgada from Ascendant Resources in 2021, inheriting prior drilling and project definition work.
    • Municipal authorities near Grândola argue the mine conflicts with existing land-use plans and question its environmental viability.
    • Brennan links local political opposition to a luxury residential and golf development located roughly 35 km from the project.
    • Cerrado reports one of Portugal’s most detailed hydrological studies, covering three aquifers with Spanish specialist input.
    • Minera Don Nicolás in Argentina produced 50,238 oz Au-eq in 2025, down from 54,494 oz the previous year.
    • Revenue rose to $131.8 million and adjusted EBITDA to $33.4 million in 2025, supporting self-funded project development.
    • Transition at Minera Don Nicolás from maturing open pits to underground mining and expanded heap leach is underway to stabilise grades.
    • Brennan forecasts combined cash flow of “a couple hundred million dollars” annually once Lagoa and other projects are operating.

    Our Take

    With Cerrado Gold’s market capitalisation around C$228 million and last year’s revenue at about $132 million, Lagoa Salgada’s delay in Portugal likely has a disproportionate impact on its growth narrative compared with larger diversified base‑metal producers in our database.

    The environmental dispute around Lagoa Salgada in southern Portugal contrasts with smoother permitting stories in other Iberian pyrite belt copper and zinc items in our coverage, signalling that proximity to high-end residential and tourism developments can be a decisive risk factor even in established mining districts.

    Cerrado’s improving adjusted EBITDA (from about $24 million to $33 million) backed by operating assets such as Minera Don Nicolás and the Monte do Carmo gold project gives it more room than many single-asset juniors in our Mining–Projects coverage to absorb a 2028 start-up slippage at Lagoa Salgada, but still constrains how aggressively it can fund parallel developments like Mont Sorcier in Quebec.

    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

    Top 50 mining companies add $250bn in 2026: capital and project signals for engineers
    Mining
    about 10 hours ago

    Top 50 mining companies add $250bn in 2026: capital and project signals for engineers

    Global mining majors added $250 billion in value in early 2026, lifting the MINING.COM Top 50 to a combined $2.41 trillion despite the US–Iran war and volatile gold at about $4,700/oz and silver above $70/oz, both off record spikes. BHP briefly exceeded a $200 billion market capitalisation, copper contributed $7.95 billion to its half‑year operating earnings, and six miners – including Agnico Eagle, Zijin Mining, Southern Copper and Newmont – now sit in the $100‑billion club. At the other end, Amman Minerals fell 27% on Indonesian smelter delays and Ivanhoe Mines cut Kamoa‑Kakula 2026 copper guidance to 290,000–330,000 tonnes, dropping it below the $18 billion Top 50 cut‑off.

    pH7 Technologies’ closed-loop PGM and chalcopyrite leaching: key notes for mine planners
    Mining
    1 day ago

    pH7 Technologies’ closed-loop PGM and chalcopyrite leaching: key notes for mine planners

    Canadian processor pH7 Technologies is expanding its Vancouver facility, backed by up to C$4 million from NRC IRAP, to scale its organo-electrochemical platform that recovers platinum, palladium and rhodium from secondary materials without toxic reagents or tailings wastewater. The commercial plant already processes spent catalytic converters, producing 30,000–40,000 oz of platinum-equivalent PGMs per year under a tolling and offtake model involving partners such as Mitsubishi. pH7 is now piloting electrochemically generated oxidants to heap leach chalcopyrite and other sulphide ores without cyanide, targeting on-site mine deployment within 1–2 years across South America, Africa and Australia.

    Dellner Bubenzer mining brakes: integrated drivetrain design notes for engineers
    Mining
    2 days ago

    Dellner Bubenzer mining brakes: integrated drivetrain design notes for engineers

    Dellner Bubenzer is supplying a wide range of industrial brakes and couplings for mining hoists, slewing drives and belt conveyors, developed in long-term collaboration with OEMs. The company focuses on both service and emergency braking solutions tailored to heavy-duty mining duty cycles and harsh environments, addressing controlled hoisting, precise slewing and high-tension conveyor stopping. For engineers, the key point is an integrated approach to drivetrain and braking design, rather than bolt-on safety systems, across multiple critical mining applications.

    Related Industries & Products

    Mining

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

    Tunnelling

    Specialised solutions for tunnelling projects including grout mix design, hydrogeological analysis, and quality control.

    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.