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GLDN 0.055 +0.0% BRON 0.040 +0.0% BTO 5.43 −0.7% ESK 0.365 −2.7% AUMN 0.275 +0.0% GGX 0.040 +0.0% S 0.155 +29.2% NNX 0.035 +0.0% ABX 51.90 −0.6% TTS 2.40 −4.0% FCI 0.400 −9.1% GR 0.075 +0.0% AII 23.38 +12.4% TUNG 1.72 +1.8% LGO 1.01 −2.9% EMM 0.080 +0.0% GLDN 0.055 +0.0% BRON 0.040 +0.0% BTO 5.43 −0.7% ESK 0.365 −2.7% AUMN 0.275 +0.0% GGX 0.040 +0.0% S 0.155 +29.2% NNX 0.035 +0.0% ABX 51.90 −0.6% TTS 2.40 −4.0% FCI 0.400 −9.1% GR 0.075 +0.0% AII 23.38 +12.4% TUNG 1.72 +1.8% LGO 1.01 −2.9% EMM 0.080 +0.0%
Production / Operations Routine +

Rock Tech Advances Georgia Lake Lithium Project, Identifies Potential Pathway to Reduce Processing CAPEX by Up to 50 per cent

Ore-sorting study trims theoretical mine capex but Georgia Lake remains a back-burner asset behind Guben and Red Rock

By The Northwire Desk — AI Analysis May 19, 2026 · 09:45 RCK · 0.95 Rock Tech Lithium Inc.
Executive Summary
  • Rock Tech (TSX-V: RCK) announced results of an ore-sorting test program at its Georgia Lake Lithium Project in Ontario.
  • Two sensor-based sorting technologies were tested: UV laser sorting (Optimum N.V.) and X-ray Transmission (allmineral).
  • Test results: 25–45% of waste material can be rejected pre-processing; ore upgraded by a factor of 1.4x–1.8x.
  • The company claims this could reduce future crushing and concentrator CAPEX by "up to 50%."
  • Work was funded in part by Ontario's Critical Minerals Innovation Fund (CMIF — CAD$388,074 disclosed previously) and conducted with Queen's University and STARK Resources.
  • The 2022 PFS baseline being referenced: ~10.6 Mt indicated @ 0.88% Li2O + 4.2 Mt inferred @ 1.00% Li2O; pre-tax NPV USD$223M, after-tax NPV USD$146M, pre-tax IRR 47.8%, 1.0 Mt/yr concentrator.
  • Next steps cited: potential future drilling, additional cost-optimizing engineering, work toward a future Definitive Feasibility Study (DFS).
Material Impact
  • This is a bench/pilot scale study output — not new resources, not a financing, not an updated PFS, not a permitting milestone. The "up to 50% CAPEX reduction" is the maximum modeled outcome on a portion of the plant (crushing + concentrator only), not project-wide CAPEX.
  • The headline contains the marketing-friendly hedge "potential pathway" and "up to" — both signal that this has not yet been engineered into a revised study. The 2022 PFS is not being formally updated by this release.
  • Georgia Lake is the upstream mine asset, not the principal value driver. Recent strategic narrative and capital deployment is overwhelmingly weighted to the two downstream converters: Guben (Germany) and Red Rock (Ontario). The CAD$200M BMI Group anchor partnership (2026-04-08) and the NASDAQ dual-listing prep (2026-04-24) are vastly larger value events than this study.
  • The CMIF grant funding this work was previously disclosed (June 2025). The market has known an ore-sorting study was underway. This is the result of that previously-flagged work — a follow-up, not new information.
  • No quantified dollar value of the CAPEX reduction is provided, no new updated NPV, no revised IRR, no timeline for DFS, no commitment to advance the project to construction. The PFS baseline being used is now over 3 years old.
  • Conclusion: incrementally constructive optics for Georgia Lake's eventual economics, but it does not move present-day intrinsic value. Routine - Positive.
RCK · Price
Company Overview
  • Rock Tech Lithium Inc. (TSX-V: RCK) is a vertically integrated lithium development company pursuing a "mine-to-battery" strategy.
  • Three assets in the portfolio, ranked by current strategic priority:
    1. Guben Lithium Converter (Brandenburg, Germany) — flagship. Planned 24,000 t/yr battery-grade lithium hydroxide (LHM); fully permitted; EU CRMA Strategic Project status. CAPEX revised down to €680M (from €730M). Modeled OpEx of €3,878/t LHM (revised down 23%). Spodumene feed from C&D Logistics (Qingdao); crystallization tech from GEA Group; EPCM by Worley. Renewable energy supply MoU with Enertrag (≥70 GWh/yr). Cathode offtake MoU with Ronbay Technology for Polish CAM plant. ~200 jobs.
    2. Red Rock Lithium Converter (Ontario, Canada) — second converter; up to 32,000 t/yr LCE; 337-acre site with ~120 MW power, gas, CPKC rail. CAD$2.3B NPV claimed. BMI Group anchor partnership announced (CAD$200M LP commitment, plus initial CAD$30M non-dilutive funding tranche). Siemens Digital Twin partnership. FID targeted end-2026.
    3. Georgia Lake Lithium Project (Ontario, Canada) — upstream feed asset. 2022 PFS: ~10.6 Mt @ 0.88% Li2O indicated + 4.2 Mt @ 1.00% Li2O inferred; pre-tax NPV USD$223M; pre-tax IRR 47.8%; 1.0 Mt/yr concentrator. Ore-sorting work today's news. Royalty status not disclosed in news provided.
Read the original news release →

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