Platina Resources Uncovers New Gold Zones at Mt McKenna

Discovery of New Gold Mineralised Corridors at Mt McKenna

Platina Resources (ASX:PGM) has unearthed a new gold mineralised corridor stretching more than 1 kilometre at its Granite Well East prospect within the Mt McKenna Gold Project, located in Western Australia’s Laverton Gold District. The discovery follows extensive aircore drilling totaling 10,809 metres over 220 holes across two exploration phases completed in early 2026.

Key drill highlights from Targets 4 and 5 include a standout 1 metre intercept grading 7.10 grams per tonne (g/t) gold from 40 metres depth (hole MMKAC0239), just one metre from the bottom of the hole. Additional noteworthy results include 4 metres at 1.11 g/t Au from 12 metres and 7 metres at 0.61 g/t Au from 36 metres, with mineralisation continuing to the bottom of the hole in some cases. These intercepts coincide with strong arsenic anomalies, a classic pathfinder element for orogenic gold systems, indicating a compelling geochemical signature supporting the discovery.

Arsenic Anomaly and Mineralised Structure at Black Rock

At Target 2, encompassing the Black Rock and Granite Hill prospects, Platina has delineated a coherent north-northeast trending mineralised structure extending over 800 metres. This zone is characterised by elevated arsenic values and multiple anomalous gold intercepts, including 4 metres at 4.69 g/t Au from 16 metres (hole MMKAC0162) along a mafic-granite contact. The presence of gold mineralisation within saprock and at or near the bottom of holes suggests the system remains open at depth, warranting follow-up reverse circulation (RC) drilling.

Platina’s CEO Corey Nolan emphasised the significance of these findings, stating, "The multiple mineralised zones identified are highly encouraging and provide strong evidence for a potentially much larger gold system beneath the weathered profile." He highlighted the association between gold and arsenic anomalism as opening "an entirely new exploration corridor at Mt McKenna," underscoring the prospectivity of the structural and geochemical setting.

Government Grant to Support Deeper Drilling

Adding momentum, Platina has secured $109,200 under the Western Australian Government’s Co-funded Exploration Drilling Program. This funding will support a 13-hole RC drilling campaign at Target 2, designed to test deeper extensions of the mineralised structures identified through aircore drilling and gravity surveys. The program is scheduled as part of a broader follow-up RC campaign planned for later in 2026.

The company also plans further aircore drilling at Granite Well East to infill and extend the newly identified gold mineralisation, focusing on continuity and orientation to refine targeting for higher-grade zones. Detailed structural geological mapping will precede these efforts to enhance interpretation and prioritisation of drill targets.

Geological Setting and Historical Context

The Mt McKenna project lies within the Archean Yilgarn Craton and hosts Laverton greenstone lithologies including basalt, dolerite, ultramafic units, granite, and granodiorite. Mineralisation is associated with quartz veining, shear zones, and alteration assemblages such as sericite, carbonate, and chlorite. The Granite Well East prospect is situated at a structural intersection between major geological domains, a setting known to be favourable for orogenic gold deposits.

Historical exploration by multiple companies has previously identified anomalous gold values in the region, but Platina’s recent drilling has expanded the known mineralised footprint and confirmed new corridors with robust geochemical and structural signatures.