Conference Proceedings - World Mining Congress 2026

2268 4.7. Deep Geothermal Potential and Continental Scalability Heat in Place analysis shows that geothermal resources shift from local to continental with greater depth. At 2000 m, high enthalpy is limited to the Andean volcanic arc; at 4000 m, anomalies expand towards intra-plate basins, enabling EGS systems. At 7000 m, the resource becomes nearly ubiquitous, with superhot zones in the mountain range and sufficient temperatures in the craton, confirming deep geothermal as a massive and scalable reserve for base supply in mining outside the volcanic axis (Figure 5). Figure 5 – Geothermal energy potential maps (Heat in Place) in South America at depths of: a) 2000 m, b) 4000 m, and c) 7000 m (Adapted from Project InnerSpace, 2025). 5. DISCUSSION Geothermal integration transcends electrical substitution, consolidating itself as a security vector resolving the water-energy nexus. Our results ($65.64 USD/MWh) coincide with IRENA (2023) in positioning geothermal as the most stable renewable against fossil volatility. Thermal Synergy and Operational Security: Resource thermodynamics allow for "cascading use". In Milling, it provides base load (>95% PF) eliminating diesel backup. In high-altitude Leaching, it maintains solution at 20–25°C, doubling reaction kinetics according to Arrhenius and replicating the success of the Lihir mine (Melaku et al., 1995). Furthermore, it optimizes Electro-winning and Ventilation under sustainable mining principles (Bayer et al., 2013), while residual fluid enables local agriculture (Shortall et al., 2015). Its 95% Plant Factor (Lund & Toth, 2021) provides critical inertia and frequency stability superior to solar (Matek et al., 2016), eliminating the need for massive storage (BESS). Regional Strategies and Roadmap: Two symbiosis models are validated: the Southern Geothermal Hub (Moquegua-Tacna) complementing wind energy (DiPippo, 2016), and the Integral Replacement for Cerro Verde (Arequipa). Implementation must follow the staged "Asian Model" (Gehringer & Loksha, 2012): 50-60 MW modules, PPA contracts for bankability, and validation via slim holes to mitigate capital risk. Technical Challenges and Risk Mitigation: The use of 3D Magnetotellurics reduces drilling uncertainty (Gonzales, 2025). Limitations: Deep drilling is required to confirm enthalpy and ensure sustainable reinjection. Resource Model Limitations: Resource estimates rely solely on surface data, lacking deep drilling confirmation (>1,500 m) to prove commercial permeability. Consequently, potential is classified as 'Inferred Resources' rather than 'Proven Reserves,' necessitating validation drilling prior to investment. 6. CONCLUSIONS 1. Resource Sufficiency and Logistical Viability: It is confirmed that the Southern Volcanic Axis harbors high-enthalpy potential (>770 MW) sufficient to cover mining demand by 2030. Average

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