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

    Emmerson’s White Devil gold strike: underground design notes for mine planners

    November 25, 2025|

    Reviewed by Tom Sullivan

    Emmerson’s White Devil gold strike: underground design notes for mine planners

    First reported on Australian Mining

    30 Second Briefing

    Emmerson Resources has reported a new gold strike at its White Devil deposit in the Tennant Creek Mineral Field (TCMF) in the Northern Territory, reviving interest in one of Australia’s historically high-grade ironstone-hosted gold provinces. The discovery sits within the broader TCMF, long known for structurally controlled, narrow-vein lodes with grades that can exceed typical open-pit averages by several multiples. For geotechnical and mine planners, the result points towards further underground, selective mining scenarios rather than bulk-tonnage development in this district.

    Technical Brief

    • White Devil mineralisation is ironstone-hosted, implying strong rock–mass contrasts and complex stiffness/strength domains.
    • Tennant Creek ironstone bodies typically form steep, lensoid pods, favouring narrow, high-selectivity stoping geometries.
    • Structural control in the TCMF is dominated by shear zones and fold hinges, complicating stope orientation and access drives.
    • Historic Tennant Creek orebodies often persist at depth beneath oxide depletion, requiring early planning for deeper underground extensions.
    • Ironstone–sediment contacts can create sharp changes in ground conditions, demanding closely spaced face mapping and flexible support patterns.
    • High-grade, narrow lodes generally push mine design towards small equipment fleets, tight development headings and careful dilution control.
    • Geotechnical models must integrate detailed structural logging and domain-specific strength parameters rather than broad, pit-scale assumptions.
    • For similar ironstone-hosted systems, early underground geotechnical drilling and oriented core are critical to constrain stope stability envelopes.

    Our Take

    Within our recent Mining coverage, most gold project pieces are in Western Australia and Queensland, so activity at Emmerson Resources’ White Devil deposit in the Tennant Creek Mineral Field highlights the Northern Territory as a less crowded but geologically proven gold district.

    The Tennant Creek Mineral Field has a long history of high-grade, structurally controlled gold deposits, which suggests that any new intercepts at White Devil could support a strategy focused on selective underground mining rather than bulk-tonnage open pits.

    For a junior like Emmerson Resources, demonstrating repeatable high-grade results at White Devil in the TCMF can materially improve options for farm-ins or toll-treatment arrangements with existing Central Australian processing hubs, reducing the need for standalone plant capex in the Northern Territory.

    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

    Meta and Sprott in nuclear revival: demand signals and risks for uranium projects
    Mining
    about 1 hour ago

    Meta and Sprott in nuclear revival: demand signals and risks for uranium projects

    Meta has signed nuclear power deals with Vistra, TerraPower and Oklo for up to 6.6 GW of capacity by 2035 to run its US data centres and the Prometheus AI supercluster in Ohio, adding to a 20‑year, 1.12 GW offtake from Constellation’s Clinton plant. In parallel, the Sprott Physical Uranium Trust has bought 300,000 lb of U₃O₈ in a week, lifting holdings to about 75.2 million lb worth US$6.17 billion, as spot prices hover around US$82/lb. For miners and project developers, this combination of long‑term nuclear PPAs and aggressive physical uranium accumulation signals firmer demand visibility despite persistent SMR cost and schedule risk.

    Mining
    about 12 hours ago

    Derrick Experience Center: fine screening test gains and risks for plant engineers

    Derrick Corporation has opened its Derrick Experience Center (DEX Center) in January 2026 to mark its 75th anniversary, creating a dedicated test hub for advanced fine screening technology. The “first-of-its-kind” facility is designed for current and prospective customers to run full-scale trials on Derrick high-frequency screens and Polyweb® urethane panels under controlled conditions, rather than relying solely on on-site pilots. The centre is intended to shorten test campaigns, de-risk screen selection, and optimise cut size and throughput for fine coal, iron ore, base metals and industrial minerals circuits.

    University of Arizona mine waste project: key processing insights for engineers
    Mining
    1 day ago

    University of Arizona mine waste project: key processing insights for engineers

    A $3.6 million Arbor-funded University of Arizona Tailings Center project, led by mining engineer Dr Isabel Barton, is evaluating whether 17.5 billion tons of historic copper tailings in Arizona—growing by ~100 million tonnes per year—can be reprocessed to recover critical minerals and reduce environmental risk. The team is combining statewide and UAV-based remote sensing, industry tailings datasets, drilling and surface sampling, mineralogical characterisation and techno-economic analysis using magnetic separation and basic leaching. Early work has identified unexpected mineral occurrences, including arsenic, zinc and possibly tungsten, which could justify flowsheet changes to keep these elements out of future tailings.

    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.