VKA.ASX: LINKA METALLURGY SUCCESS DELIVERS 62.5%WO3 AT 59.8% RECOVERY

LINKA METALLURGY SUCCESS DELIVERS 62.5%WO3 AT 59.8% RECOVERY

Stock	Viking Mines Ltd (VKA.ASX)
Release Time	28 May 2026, 9:50 a.m.
Price Sensitive	Yes

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Viking Mines Achieves High-Grade Tungsten Recovery at Linka

Key Points

Achieved 62.5% WO3 concentrate at 59.8% recovery
Improved from previous 56.4% WO3 at 46.0% recovery
Gravity circuit refined to 66.6% WO3
Ongoing testwork to optimize flotation stage
Low-CAPEX processing pathway validated

Full Summary

Viking Mines Limited has announced successful metallurgical testwork results at its Linka Tungsten Project in Nevada. The combined gravity and cleaner flotation circuit has produced a premium 62.5% WO3 concentrate at 59.8% recovery from a 1.2% WO3 feed grade. This represents a meaningful improvement from the previously reported 56.4% WO3 at 46.0% recovery. The standalone gravity concentrate achieved 66.6% WO3, while the flotation concentrate achieved 54.3% WO3 at 17.1% recovery. The testwork was completed on a larger 10 kg sample, providing confidence in the flowsheet's scalability. The results support a low-CAPEX gravity-led flowsheet strategy, using simple proven technologies to produce high-grade tungsten concentrate. Further testwork is underway to optimize the flotation stage and refine the processing pathway ahead of the maiden drilling program targeted for June 2026 quarter.

Outlook

Viking Mines plans to optimize flotation reagent regimes and conduct variability testing across bulk samples to refine the processing flowsheet. The maiden drilling program at Linka is on track for the June 2026 quarter.