Lachlan Star (ASX: LSA) has identified visible gold and multiple high-grade assay results from rock chip and dump sampling at its New Waverley gold project in Western Australia, strengthening confidence in a developing structural gold system.
The results highlight a series of cross-cutting quartz reef structures within the Trial Pit area that appear to host high-grade mineralisation.
This supports the company’s geological interpretation of a Norseman-style gold system.
With drilling set to commence later this month, Lachlan Star is moving to systematically test a structural corridor that remains largely untested by historical work.
Structural Gold System Confirmed
Rock chip sampling from the Trial Pit floor returned multiple high-grade gold results associated with quartz reef intersections, including assays up to 56 grams per tonne gold and several additional results above 20g/t.
These results were concentrated at the intersection of north-south and west-east trending reef structures, indicating a strong structural control on mineralisation within the system.
The company noted that this style of mineralisation aligns with high-grade quartz reef-hosted systems typical of the Norseman district, reinforcing its geological model for the project.
Geological mapping has defined a mineralised corridor of approximately 400m that may extend to at least 800m along strike based on current interpretations.
Historical drilling along west-east traverses did not systematically test these structural intersections, leaving key targets within the corridor effectively unexplored.
Sampling Adds High-Grade Potential
Grid sampling across historical waste dumps adjacent to the pits returned numerous results above 1g/t gold, with a peak value of 58.6g/t.
The absence of historical records for these dumps has prompted the company to assess their economic potential through additional sampling and metallurgical test work.
To support this evaluation, Lachlan Star has completed a high-resolution drone photogrammetry survey to generate a digital elevation model for volumetric analysis of the dump material.
Further technical work will focus on understanding grade distribution, variability, and recoverability within the dump material while maintaining priority on drilling the primary reef system.
This parallel workstream adds a potential secondary source of mineralisation alongside the primary quartz reef-hosted targets.
Drilling Program to Test Corridor
Lachlan Star will commence diamond drilling shortly, targeting high-grade shoot positions and stacked quartz reef extensions within the Waverley–Trial Pit corridor.
Following receipt of assay results, the company plans to undertake a reverse circulation drilling program to more systematically test the full strike extent of the system.
“These results continue to strengthen our confidence in the geological model at New Waverley, highlighted by the high-grade assays and visible gold within the exposed quartz reef system at Trial Pit,” chief executive officer Andrew Tyrrell said.
“With diamond drilling set to commence shortly, our focus is on systematically testing this corridor to confirm historical drill intersections, determine the continuity and orientation of the quartz reef structures, and their potential to host repeat high-grade gold intersections along strike and at depth.”
