## 4 Results
### Fluid Inclusions Petrography  
A study of fluid inclusions from the Gerakario porphyry system by [PERSON] [44] revealed that the potassic alteration and the Cu precipitation took place from an initial magmatic fluid with high homogenization temperatures (Th = 350-600 \({}^{\circ}\)C) and high salinities (45-70% wt.% NaCl equiv.). The subsequent sericitic alteration and sulfide mineralization were formed by boiling fluids with lower salinities (38-45% wt.% NaCl equiv.) at lower temperatures (350-400 \({}^{\circ}\)C). Inclusions along healed cracks with homogenization temperatures <350 \({}^{\circ}\)C were characterized as secondary [44]. To further constrain the character of the ore fluids and the formation conditions of the Gerakario deposit, a fluid inclusion study was conducted on quartz from A-type veins related to the potassic alteration of the porphyry mineralization, and from the epithermal stibinite-quartz veins. Quartz in the veins is semi-transparent and anhedral, with the grains forming triple junctions at angles of \(\sim\)120\({}^{\circ}\) (Figure 7a), implying extensive recrystallization [51]. This is typical of early high temperature quartz veins in many porphyry copper systems and suggests that the fluid inclusions migrated to grain boundaries [52]. The continuous and multiple flows of fluids caused re-opening of the veins and dynamic recrystallization of the quartz and commonly destroy a large part of the fluid inclusion assemblages [51; 52]. Figure 6: Average values of critical and rare metals concentrations of stibinite from the epithermal quartz-stibinite veins. Local enrichments related to nano-scale mineral inclusions are excluded. In the present study, most of the fluid inclusions are arranged in clusters (Figure 7a-c) that have escaped recrystallization. These inclusions are characterized by similar shapes and sizes and constant liquid to vapor ratios, and consequently are classified as primary, on the basis of the criteria proposed by [PERSON] [53] and [PERSON] [54]. Fluid inclusions distributed along the growth zones of quartz are extremely rare and too small for microthermometry. The maximum length of the primary inclusions reaches 32 \(\upmu\)m. In addition to primary fluid inclusions, rare secondary inclusions occur along healed cracks. In several inclusions, post-entrapment phenomena (necking down or leaking) are common, and no measurements were performed on them. Based on the phase ratios observed on the inclusions from the Gerakario porphyry system and the epithermal stibnite veins at room temperature, in combination with their behavior during heating and freezing, three types of primary fluid inclusions were identified. Type 1 inclusions consist of two-phases a liquid aqueous phase and a vapor phase where the vapor bubble occupies 30-40% of the volume of the inclusion. These inclusions homogenize into the liquid phase and are found in the porphyry- and the epidermal-related veins (Figure 7b,c). Type 2 inclusions comprise three or four phases (Figure 7b,d,e), one liquid, one vapor (occupying 30 to 40% of the volume of the inclusions), and one or rarely two solid phases halite and sylvie. In exceptional cases, another solid unidentified phase was observed (Figure 7d). Type 2 inclusions homogenize into the liquid phase by bubble disappearance. Type 3 fluid inclusions are two phases, liquid-vapor inclusions where the latter occupies 80-90% of the volume of the inclusion (Figure 7f). These inclusions homogenize into the vapor phase and rarely contain one or two opaque minerals, which are likely hematite and chalcopyrite (Figure 7e). Fluid inclusions of type 2 and 3 are found only in the porphyry system.