Announcement • May 22
Bradda Head Lithium Ltd Enhances Lithium Targeting At San Domingo Using SRK Advanced Geochemical PEG Tool
Bradda Head Lithium Ltd. announced positive results from ongoing technical studies completed by SRK Consulting (UK) Limited at the Company's wholly owned San Domingo lithium pegmatite project in Arizona. The work forms part of the Company's broader strategy to enhance exploration targeting, mineralogical understanding, and future metallurgical planning across its pegmatite portfolio. The work undertaken by SRK utilizes the historic exploration work undertaken by the Company and should be read in the context of previous updates on San Domingo. The resultant output generates more definitive targets for future campaigns. PEG workflow identified multiple high-priority lithium targets consistent with the Company's prior analysis, including Dragon, Midnight Owl, and Ruby Soho, supporting Bradda Head's next-phase drill targeting strategy. Advanced geochemical vectoring expected to significantly enhance exploration efficiency, and prioritize the most fertile spodumene-bearing pegmatites across the San Domingo district. SRK's PEG methodology confirms San Domingo as a highly evolved and fertile LCT pegmatite system, with additional upside potential from cesium, tantalum, and tin enrichment. The integration of PEG analysis with drilling and surface mapping is improving geological confidence, supporting future resource growth potential and long-term project development. Midnight Owl and Dragon continue to emerge as standout lithium targets, demonstrating favorable spodumene preservation, strong fractionation signatures, and encouraging drill-supported mineralization. The PEG tool provides Bradda Head with a scalable exploration framework that can be expanded across its broader Arizona pegmatite portfolio, including the Whistlejacket Project. SRK's interpretation supports the presence of preserved primary spodumene mineralization, a key indicator for future resource potential and metallurgical optimization. The study reinforces Bradda Head's strategy of advancing high-quality domestic U.S. lithium assets positioned to support future battery supply chain demand. At the request of the Company, SRK has applied its proprietary PEG workflow to evaluate pegmatites across the project using whole-rock assay data derived from both rock-chip sampling and drill core assays. The PEG workflow integrates mineralogical and geochemical interpretation to classify pegmatite types, identify mineralogical trends, and evaluate the fertility and crystallization evolution of lithium-bearing pegmatite systems. The workflow assists in distinguishing spodumene-dominant lithium mineralization from more evolved lithium-mica-rich assemblages, while identifying potential byproduct opportunities associated with cesium, tantalum, and tin mineralization. In parallel, the study can highlight potential metallurgical penalty elements such as iron and sulfur that may influence future processing considerations. In addition, PEG analysis includes the Chemical Index of Alteration (CIA), a geochemical parameter utilized to assess the degree of weathering and alteration affecting pegmatites and lithium minerals, particularly spodumene. According to SRK's interpretation, the Dragon Prospect represents one of the most prospective target areas within the San Domingo pegmatite field. The area displays strong geochemical fractionation together with spodumene-bearing pegmatites and spodumene-quartz mineral assemblages, characteristics considered favorable indicators of lithium fertility within LCT pegmatite systems, this is further supported by field interpretations, where well-preserve spodumene crystals have been identified in surface, and no significant hydrothermal alteration has been documented in the area. The study further suggests that the Dragon area may preserve residual primary spodumene mineralization linked to the principal magmatic lithium enrichment stage, supporting its potential as a future drill target. The PEG analysis also identified the Midnight Owl area as one of the strongest drill-supported lithium domains within the project. Existing drilling and geochemical interpretation indicate spodumene-bearing pegmatites with encouraging lithium enrichment, supported by favorable mineralogical signatures and locally elevated cesium and tantalum values. SRK highlighted drill hole SD-DH22-024 as one of the best mineralized drill locations evaluated through the PEG workflow, demonstrating spodumene development and evidence of preserved lithium mineralization at depth, the mineralogical analysis of the drill hole shows the distribution of the mineralized intervals, where logged sections contain well-preserved crystalline spodumene specimens, and locally lepidolite mineralization. While the Ruby Soho area appears less evolved than Dragon and Midnight Owl, the PEG interpretation suggests it remains sufficiently prospective to justify a maiden drilling program in future exploration campaigns. The Ruby Soho target, located approximately 1.5 km east of Midnight Owl, has emerged as another priority area after surface mapping identified a pegmatite ranging from 1.5 to 5.0 meters in width and exposed over a strike length exceeding 250 meters, containing abundant visible spodumene mineralization. Overall, the PEG study demonstrates that the San Domingo system hosts a broad spectrum of pegmatite evolution, ranging from barren and weakly fractionated pegmatites to highly evolved lithium-bearing systems. Importantly, the highest-priority targets appear associated with pegmatites that remain within the optimal spodumene crystallization stage, prior to significant hydrothermal overprinting and lithium remobilization into lithium-mica assemblages. The study also identified localized cesium and tantalum enrichment across portions of the pegmatite field, supporting the interpretation that San Domingo represents a highly evolved and fertile LCT pegmatite system with potential byproduct upside. In addition, the PEG workflow provides a framework for future vectoring toward higher-grade lithium zones through integrated geochemical, mineralogical, and structural interpretation.
