Dalaroo Metals Verifies Sediment Depths Up to 50 Metres at Blue Lagoon Rare Earth Project, Greenland

Comprehensive Geophysical Survey Validates Extensive Sediment Basin Structure at Blue Lagoon

Dalaroo Metals has completed an extensive geophysical survey at its flagship Blue Lagoon Rare Earth Project in southern Greenland, marking a significant step forward in understanding the scale, geometry, and continuity of the sedimentary basin hosting rare earth mineralisation. The company executed twenty-one Ground Penetrating Radar survey lines across five priority shoreline targets, delivering the first detailed subsurface model of this rare earth-bearing system.

The GPR data confirmed widespread unconsolidated sediment accumulations around Blue Lagoon, identifying thick sediment packages with depths interpreted up to approximately 50 metres. Sediment thickness commonly ranges between 30 and 50 metres at Sites A, B, and C, with some areas exceeding the GPR system's penetration limit, suggesting even deeper sediment layers. These results validate Dalaroo's source-to-sink exploration model and establish Blue Lagoon as a site with extensive sedimentary depocenters capable of preserving large volumes of heavy mineral-rich sediments.

Detailed Site-Specific Sediment Analysis Highlights Primary and Secondary Exploration Targets

The survey revealed notable variations in sediment thickness across the five priority target areas. Site A emerged as the most prospective, with bedrock depths ranging from about 2 to 50 metres below the surface and sediment thickness potentially exceeding 50 metres in some zones. This site represents one of the largest sediment accumulations identified and remains open at depth, offering significant exploration upside.

Site B shares similar geological features with Site A, showing extensive sediment packages between approximately 2 and 50 metres deep, indicating a favorable environment for heavy mineral accumulation. Site C exhibits increasing sediment thickness toward the shoreline and adjacent peninsula, with bedrock depths also between 2 and 50 metres, marking it as another prime area for further exploration. Site D shows moderate sediment accumulation with bedrock generally between 1 and 30 metres below surface, representing a secondary target with localized heavy mineral potential. Site E has relatively thin sediment cover, with a maximum thickness near 10 metres, providing a comparative baseline against thicker sediment systems elsewhere in the lagoon.

Discovery of New Sediment-Filled Valleys Expands Exploration Scope Across District

A key outcome of the geophysical survey was identifying numerous sediment-filled valleys extending beyond the current exploration footprint at Blue Lagoon. These valleys act as additional source-to-sink pathways that transport, concentrate, and preserve rare earth element-bearing heavy minerals derived from surrounding alkaline granites. The findings reveal that the Blue Lagoon sedimentary system is significantly larger than previously recognized and extends well beyond existing exploration zones.

Dalaroo has pinpointed extensive eastern sediment-filled valleys offering multiple high-priority exploration targets, which will be integral to the company’s expanded 2027 field season strategy. These newly discovered valleys may host heavy mineral accumulations similar to those found in the main Blue Lagoon basin, greatly enhancing the district-scale potential of the project. This expansion broadens the company’s exploration area and suggests the rare earth mineralisation footprint is substantially larger than earlier estimates, presenting considerable upside for future exploration and resource definition.

Bathymetric Survey Provides First Detailed Model of Lagoon Floor

Complementing the GPR work, Dalaroo conducted ten bathymetric survey lines using Single Beam Echo Sounder technology across Blue Lagoon. This survey produced the first detailed model of the lagoon floor, offering vital insights into the subaqueous sedimentary environment. Integrating onshore GPR data with offshore bathymetric information delivers a comprehensive three-dimensional understanding of the sedimentary basin both above and below water.

The bathymetric data will be crucial for refining exploration strategies and understanding sediment transport and deposition within the lagoon system. When combined with onshore geophysical and geological data, this information will help identify optimal locations for future drilling, sampling, and resource evaluation. The integrated three-dimensional model provides unparalleled clarity on sediment package geometry and distribution, enabling more targeted exploration in 2027.

Survey Results Bolster Confidence in Sediment-Hosted Rare Earth Exploration Model

Unlike traditional hard-rock rare earth projects, Blue Lagoon is being explored as a sediment-hosted heavy mineral system where sediment thickness and continuity are key to project scale potential. The geophysical survey confirmed extensive sedimentary packages throughout the basin and identified new sediment-filled valleys, significantly expanding the exploration search area. These findings validate Dalaroo’s geological model and align with characteristics of other major sediment-hosted rare earth deposits.

The results reinforce the source-to-sink exploration model by confirming Blue Lagoon’s capacity to preserve large volumes of heavy mineral-rich sediments derived from surrounding alkaline intrusive rocks. The geometry and distribution of sediment packages are consistent with long-lived depositional environments capable of concentrating resistant heavy minerals, including rare earth element-bearing minerals, zircon, and hafnium-bearing phases. This provides strong geological support for Dalaroo’s exploration strategy and suggests Blue Lagoon could host substantial economically viable rare earth mineralisation.

Integration with Geological Mapping and Geochemistry to Sharpen Drilling Targets

Combined with geological mapping, surface geochemistry, sediment sampling, and upcoming assay results, the geophysical data will refine high-priority drill targets and further strengthen Dalaroo’s source-to-sink rare earth exploration model. The geological team continues mapping and sampling surrounding areas, synthesizing multiple datasets to build a comprehensive understanding of the Blue Lagoon system. The discovery of widespread sediment packages exceeding 30 metres in thickness, including areas surpassing 50 metres, marks a major advancement in project knowledge.

The three-dimensional subsurface model from the geophysical survey will guide future auger drilling, bulk sampling, and resource evaluation. Understanding the precise location and thickness of mineralised sediment packages allows Dalaroo to prioritize drill sites with improved confidence and efficiency. These survey results provide a strong technical foundation for advancing exploration and support resource estimate development as the project progresses toward prefeasibility and feasibility stages. The comprehensive geophysical dataset represents a significant de-risking milestone for Blue Lagoon.

Project Location and Full Ownership Structure

Dalaroo Metals’ Blue Lagoon Rare Earth Project, located in southern Greenland, is the company’s flagship exploration asset. Dalaroo holds 100% ownership, granting full operational and commercial control over exploration, development, and mining activities. The project benefits from Greenland’s established infrastructure and regulatory environment for mineral exploration and development. Previous surface sampling at Blue Lagoon identified widespread rare earth element, zirconium, and hafnium mineralisation, supporting the recent geophysical investigations.

The sediment-hosted rare earth exploration model is based on evidence of rare earth mineralisation dispersed along the Blue Lagoon shoreline and basin. The five priority targets selected for the geophysical survey were chosen based on prior surface sampling highlighting significant rare earth concentrations. Full ownership enables Dalaroo to pursue an aggressive, flexible exploration strategy without joint venture constraints.

Next Steps and 2027 Field Season Exploration Plans

With the geophysical survey complete, Dalaroo is equipped to advance exploration during the 2027 field season. The company will leverage the three-dimensional subsurface model to plan and execute auger drilling, bulk sampling, and resource evaluation across Blue Lagoon. Newly identified sediment-filled valleys will be key to the expanded exploration approach, with investigations aimed at determining if these areas host rare earth mineralisation comparable to the main basin.

The survey results indicate a substantially enlarged exploration search space with multiple new targets requiring assessment. Dalaroo’s geological team will continue integrating geophysical data with ongoing geological mapping and geochemical sampling to refine drill targets. The company views these findings as reinforcing its sediment-hosted rare earth model and supporting broader exploration expansion across the Blue Lagoon district, suggesting significant potential to increase the scale of mineralisation at the project.