Terrain Minerals Limited - 22 metres @ 2.71 g/t Gold Intersected at Lightning & Monza Gold Prospect

About this update from Terrain Minerals Ltd

Terrain Minerals Limited diversified mineral explorer, ('Terrain' or the 'Company) is pleased to report that the first batch of assay results from its recently completed reverse circulation (RC) drilling campaign at its Lightning & Monza Gold Prospect has returned a significant gold intersection. The intersection of 22 metres at 2.71 grams per tonne gold from 105 metres down hole at the Lightning structure suggests, at this early stage, that the Lightning & Monza Gold Prospect has the potential to host thick zones of gold mineralisation with gold grades consistent with that reported by others across the Yalgoo-Singleton Greenstone Belt1. Highlights Strong single-hole gold intersection: o Single hole result of 22m @ 2.71 g/t gold from 105m downhole (hole SBRC074), this hole only targeted the Lightning structure. o Represents the first gold assay results returned from the recently completed 22-hole (totalling 4,995m) drill campaign at Lightning & Monza (parallel structures). o Gold assays from a further 21 batches of samples still pending, for the remaining 19 holes. Results expected during September. o This result reaffirms Terrain's induced polarisation (IP) targeting strategy. Multi-element assay yet to be completed: o Initial hole assessed for gold only with multi-element assay, including silver, yet to be completed ? Previous RC drilling by Terrain into the same IP chargeability anomaly successfully intersected highly encouraging gold and silver mineralisation of 11 metres @ 6.03 g> Release date- 01092025 - Viridis Mining and Minerals L Commenting on this next stage of exploration at Monza Gold Prospect, Executive Director of Terrain Minerals , Mr Justin Virgin stated: 'These initial results are highly encouraging and reinforce the strong potential of the Lightning & Monza Gold Prospect to host significant zones of gold mineralisation. With a standout intercept of 2.71 g/t over an impressive 22 metres, our induced polarisation targeting strategy is clearly yielding promising early-stage results.' 'This marks only the first of the assay results from our 22-hole drill campaign at Lightning & Monza. It is an exciting initial result that strengthens our confidence in our strategy and highlights the potential as we continue to deploy this first-pass exploration tool across our portfolio.' 'The drilling campaign was designed to refine our still limited understanding of the controls of the mineralisation, at both parallel structures and Terrain has an additional 35 holes approved by the department for follow up drilling' Contact: Tel: +61 8 9381 5558 Email: [email protected] Gold and Silver Potential of the Lightning & Monza Prospect A gold and silver target was first identified by Terrain in May 2023 during the Company's modelling of the dipole - dipole induced polarisation (IP) geophysical survey data, which suggested that additional gold mineralisation parallel to the Monza structure may be present 50 metres west of the historical drilling7 and at the now Lightning structure. The mineralisation potential of the IP target was confirmed by Terrain in November 2023 , when a drill hole testing the chargeability anomaly successfully intersected 2 metres @ 6.22 g/t gold from 82 metres down hole (SBRC012)8. Further modelling of the geophysical data suggested the IP chargeability anomaly may have a potential strike length of up to 600 metres9. In February 2025 , Terrain drilled two RC holes located immediately north and south of the 2023 hole (SBRC012). Both holes - SBRC063 and SBRC064 - returned impressive gold and silver grades, with hole SBRC063 demonstrating an equally impressive width10. Preliminary analysis of multi-element analyses returned from the February 2025 drilling suggests a strong positive correlation exists between the gold mineralisation and lead, zinc, silver and arsenic, with a moderate positive correlation existing between gold mineralisation and antimony. Ground-based IP geophysics is a proven and effective exploration tool for directly detecting disseminated sulphide mineralisation11. Given gold mineralisation appears closely associated with (but not bound to) sulphide mineralisation across the Lightning & Monza Gold Prospect, the Company is in the process of reviewing and remodelling its 2023 IP survey data to identify further targets within the broader project area as well as extending the survey area to cover the nearby Wildflower Gold Prosect. The Company proposes to make further announcements in relation an IP survey over the Wildflower Project area later this month. Terrain notes that the drill results to date, as well as the geophysical results, suggest the gold and silver mineralisation across the Lightning & Monza Gold Prospect remains untested along strike and at depth. The Company looks forward to providing further updates over the coming months and would encourage shareholders and stakeholders to contact the Company's Executive Director should they like more information about this, or any of the Company's other exploration activities. This announcement is intended to lift the trading halt entered into by the Company on 29 August 2025 . About Terrain Minerals Terrain Minerals is a Perth -based mineral exploration company focused on its 100% owned assets in Western Australia and one in Queensland, Australia . The Company is listed on the Australian Securities Exchange under the code TMX, with a secondary listing on the Frankfurt Stock Exchange Open Market under the code T4Y. (C) 2025 Electronic News Publishing, source ENP Newswire

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