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    IDEX tungsten at Idaho Freeze copper project: resource and assay insights for engineers

    July 11, 2026|

    Reviewed by Tom Sullivan

    IDEX tungsten at Idaho Freeze copper project: resource and assay insights for engineers

    First reported on MINING.com

    30 Second Briefing

    IDEX Metals has confirmed broad tungsten mineralisation at the Kismet target within its 128 sq. km Freeze copper project in Idaho, with re-assayed hole KSMT25002 returning 180.5 m at 0.11% WO₃ from 52 m and hole KSMT25005 cutting 72.2 m at 0.13% WO₃ from 182.6 m, including 1.21 m at 1.55% WO₃. Switching from four-acid digestion to sodium peroxide fusion increased peak tungsten assays from 1,070 ppm to 12,300 ppm (1.55% WO₃), particularly in higher-grade scheelite-bearing intervals. Kismet already hosts porphyry-style copper-molybdenum mineralisation, including 101 m at 1.02% Cu from surface within 420 m at 0.37% Cu in KSMT25002, and IDEX will now re-assay four remaining 2025 holes and integrate a 90.4 line-km IP survey to refine drill targets.

    Technical Brief

    • Sodium peroxide fusion was applied to 579 matched samples to better liberate scheelite-hosted tungsten.
    • Comparative testing showed four-acid digestion aligned at low–moderate grades but under-reported higher-grade scheelite intervals.
    • Peak tungsten in a single sample increased from 1,070 ppm to 12,300 ppm using sodium peroxide fusion.
    • Freeze project spans 128 sq. km, including a 115 sq. km Idaho state mineral lease.
    • Kismet lies within a 1.8‑km mineralised corridor including North Breccia (copper) and Frostfall (gold) targets.
    • Current 2026 fieldwork exceeds 500 m of drilling, plus 1,084 soil and 73 rock samples collected.
    • A second rig is scheduled for shallow Kismet holes, while another rig drills the North Breccia copper target.

    Our Take

    With the United States importing more than half its tungsten needs, a domestic WO3-bearing discovery at Freeze in Idaho positions IDEX Metals within the ‘critical minerals’ theme that has otherwise been dominated in our coverage by copper‑gold majors such as Barrick Mining and its Reko Diq and Nevada assets.

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    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.

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