Additional High-Grade Copper Confirmed at Cinto, Peru

Latin American focused copper-gold explorer Solis Minerals Limited (ASX: SLM) (“Solis Minerals” or the “Company”) is pleased to announce an update on copper mineralisation identified in channel samples at the Cinto Project in Peru.

HIGHLIGHTS

• More copper porphyry mineralisation identified at Cinto (100% Solis Minerals) from channel sample assays (highlights):
  • 26.5m @ 0.28% Cu (Channel 11), including 5.4m @1.0% Cu Previous Cinto channel sample assays returned highlights¹:
  • 23.4m @ 0.88% Cu (Channel 1)
  • 16.8m @ 0.52% Cu (Channel 6)
• Results indicate porphyry copper mineralisation of various styles across a potential area 3km long and 0.75km wide.
• Induced-Polarisation (IP) survey planning underway to support drill target definition.
• Permitting initiated for drilling at Cinto in second half of 2025.
• Solis Minerals considers copper mineralisation at Cinto consistent with nearby Toquepala (one of Peru’s largest copper mines with 2.1Bt @ 0.47% Cu – 200ktpa Cu production)².

Chief Executive Officer, Mitch Thomas, commented:

“These results confirm the significant potential at the Cinto Project, where we've substantially expanded Solis’ porphyry copper mineralisation footprint. Notably, we're seeing mineralisation styles similar to those at the major Toquepala mine, just 15km away. Geophysical data from drone magnetometry supports scale potential and highlights new target areas. As a stand-alone project, Cinto is a compelling copper porphyry target.

Our on-ground team recently hosted site visits for our technical director Mike Parker and myself across our project portfolio. Visible mineralisation at surface at Ilo Este and Cinto was a highlight. The clear, visible prospectivity in our projects very much aligns with our objective of identifying copper-gold resources that have potential to host large-scale mining in one of the world’s leading copper producing regions.

With drilling set to begin at Chancho al Palo³ and Ilo Este this quarter, and Cinto advancing toward drilling in the second half of 2025, Solis Minerals’ portfolio of 100% owned projects has incredible potential for discovery of multiple copper-gold resources capable of supporting mining operations.”

Summary

Exploration results at Cinto from channel sampling (Table 1) show a continuation of the mineralised breccia zones previously announced on 11 February 2025. A new channel, Channel 11, situated between previously reported Channels 7 and 8, reported 26.5m @ 0.28% Cu, including 5.39m @ 1.0% Cu.

The copper mineralisation encountered at Cinto to date is predominantly in breccias, the major mineralisation host at Toquepala, 15km northwest of Cinto. Four mineralisation types have been identified in distinct zones. Cinto is situated on the major Incapuquio Fault System which favoured the emplacement of intrusions related to large-scale porphyry copper deposits of Toquepala, Quellaveco, and Cuajone (Figure 1). Toquepala is one of Peru’s oldest and largest copper producers (200ktpa copper production).

Figure 1: Cinto tenements and neigbouring Toquepala operation and peer concession holders.

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