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

    Antimony’s “perfect storm” at Hillgrove: design and flowsheet notes for mine planners

    November 22, 2025|

    Reviewed by Joe Ashwell

    Antimony’s “perfect storm” at Hillgrove: design and flowsheet notes for mine planners

    First reported on MINING.com

    30 Second Briefing

    High-grade tungsten mineralisation has been intersected at Larvotto Resources’ Hillgrove project in New South Wales, adding a second critical metal to a site already known for antimony. Managing director Ron Heeks describes antimony as caught in a “perfect storm” of falling global mine output and rapidly rising demand from defence and energy-storage sectors, positioning Hillgrove’s combined antimony–tungsten potential as strategically significant. For mine planners and metallurgists, the find raises questions on future polymetallic flowsheet design and prioritisation of drilling to define tungsten resources alongside existing antimony targets.

    Technical Brief

    • Hillgrove is an historic high-grade antimony–gold field with existing underground workings and processing infrastructure.
    • Larvotto’s current drilling is targeting extensions to known lodes rather than greenfield step-out positions.
    • Existing decline and level development could shorten lead time to first ore once a restart decision is made.
    • Brownfield status reduces permitting risk compared with new antimony–tungsten projects on undeveloped tenements.
    • Legacy plant and tailings facilities will require refurbishment and possible flowsheet modification to handle tungsten-bearing ore.
    • For other polymetallic brownfields, Hillgrove illustrates the value of reassessing historic single-commodity mines for additional critical metals.

    Our Take

    Antimony and tungsten appear in only a handful of keyword-matched pieces in our database, signalling that Hillgrove-style projects in New South Wales are operating in relatively under-reported critical mineral markets compared with lithium or copper.

    The related coverage of IGO’s Kwinana refinery difficulties with lithium hydroxide and tungsten trioxide highlights how downstream processing risk can be as material as mine supply for specialty metals, something antimony developers at Hillgrove will need to factor into offtake and processing route decisions.

    With Australia already prominent in our Mining/Projects coverage, a New South Wales antimony–tungsten asset like Hillgrove positions the state to capture some of the strategic critical minerals narrative that has so far been dominated by Western Australian battery metals projects.

    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

    Central Nevada Gold’s Mule Canyon acquisition: project and risk lens for engineers
    Mining
    about 18 hours ago

    Central Nevada Gold’s Mule Canyon acquisition: project and risk lens for engineers

    Central Nevada Gold has completed a US$20 million acquisition of Newmont’s past‑producing Mule Canyon mine in Nevada, targeting a prefeasibility study and key permits in H2 2027 ahead of a potential 2028 construction decision. Mule Canyon previously produced about 500,000 oz gold at an average head grade of 3.8 g/t with ~94% metallurgical recovery, and comes with a database of 2,149 drill holes totalling over 335,000 metres across six mineralised zones over 2.5 km. The company plans an IPO as early as 2027 after a 20‑hole metallurgical and infill drilling programme to upgrade inferred resources and de‑risk the project.

    Greenland Mines’ Sarfartoq licence: key project and offtake notes for mine planners
    Mining
    about 18 hours ago

    Greenland Mines’ Sarfartoq licence: key project and offtake notes for mine planners

    Greenland Mines has secured government approval under the Greenland Mineral Activities Act for the indirect transfer of the Sarfartoq carbonatite complex exploration licence, clearing a key condition in its US$35 million acquisition from Neo Performance Materials, which retains offtake rights to up to 60% of future ore or concentrate. The Nd-Pr-enriched project, about 60 km from Kangerlussuaq, carries a historic NI 43-101 resource with 5.88 Mt indicated at 1.77% TREO and 2.46 Mt inferred at 1.59% TREO, based on 23,000 m of drilling. The news sent Greenland Mines’ NASDAQ-listed shares up more than 22%, giving the company a market capitalisation of US$31.4 million.

    Silver price 20% August surge: leverage, scenarios and risks for mine planners
    Mining
    about 18 hours ago

    Silver price 20% August surge: leverage, scenarios and risks for mine planners

    Silver surged about 20% in August to touch $70/oz on 21 August, driven by the US Treasury’s move to double long-bond buybacks, pushing prices above several banks’ 2026 baseline forecasts but still below the most bullish $110–$160/oz year-end and Q4 targets. Equity leverage has been stark: Hecla Mining gained 47%, Wheaton Precious Metals 44%, and Coeur, First Majestic and Fortuna each 42%, while the Global X Silver Miners ETF rose 35% and junior-focused SILJ 32%. Forecasts now span roughly $67–$118/oz for peaks, with tail-risk scenarios from Bank of America and BMO stretching above $135/oz if the gold–silver ratio compresses.

    Related Industries & Products

    Mining

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

    Construction

    Quality control software for construction companies with material testing, batch tracking, and compliance 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