Figure 4: Plan map showing the distribution of porphyry gold-copper targets in the immediate vicinity of the Brama-Alba MRE at Bramaderos that are associated with gold anomalism in soil samples (backdrop to image). Overview Operating Review continued Copete gold-copper porphyry discovery The new Copete gold-copper porphyry discovery is in addition to the previously released Bramaderos Project porphyry Exploration Target and therefore presents significant scope for that Bramaderos Exploration Target to be increased. The Copete target remains largely under-explored, with no drilling by Sunstone – but now with a coherent and mineralised trench intersection, a magnetic anomaly plunging to the southeast comparable to that seen at Brama and mapped stockwork veining interpreted to represent the upper levels of an intact porphyry system. The Copete discovery means Sunstone has now outlined a 1.8km-long cluster of porphyry gold-copper mineralised intrusions along the Melonal – Copete trend. This trend runs parallel to the Brama-Alba trend and is located only a few hundred meters to the south (see Figure 4). 9 Sunstone Metals Limited Annual Report 2025
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