The Aghbolaq skarn deposit is located in the Urumieh-Golpayegan plutonic belt, NW Iran. The garnetite skarn (stage I) has been intensely cross-cut by the magnetite-garnet skarn (stage II) which were, in turn, cut and offset by the ore-hosting quartz veins/veinlets (stage III). The predominance of andradite (Adr_82.5–89.1) and its high Fe³⁺/Al ratio (up to 1685) apparently supports the high fO₂, salinity and prevalence of magmatic/hydrothermal fluids involved, rather than meteoric waters, during the magnetite-garnet skarn formation. Two major groups of fluid inclusions, namely aqueous (LV, LVS) and aqueous–carbonic (LV_C, LL_CV_C), were recognized in garnet and quartz veins that, especially in growth zones and along intra-granular trails, better display fluid inclusion assemblages (FIAs) than those in clusters. The prograde magnetite-garnet skarn was formed by the metasomatic fluid at relatively high T_h (209–374°C), under a lithostatic pressure of ∼200 bars. The retrograde mineralized quartz veins were formed at temperatures ranging from 124°C to 256°C, by dilute and less saline (2.57–11.93 wt% NaCl eq.) hydrothermal fluids under a hydrostatic pressure of ∼80 bars. The fluid evolution of the Aghbolaq skarn began with an earlier simple cooling of metasomatic fluid during the prograde stage, followed by the later influx of low salinity meteoric fluids during the retrograde stage.

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Aghbolaq（Fe、Cu）矽卡岩矿床的初步研究，Oshnavieh，伊朗西北部：对交代流体演化的限制

Aghbolaq 矽卡岩矿床位于伊朗西北部的 Urumieh-Golpayegan 深成岩带。石榴石矽卡岩（第一阶段）已被磁铁矿-石榴石矽卡岩（第二阶段）强烈横切，而磁铁矿-石榴石矽卡岩又被含矿石英脉/脉（第三阶段）切割和偏移。菱铁矿（Adr _82.5–89.1）的优势及其高 Fe ³⁺ /Al 比（高达 1685）显然支持高f O ₂、盐度和岩浆/热液流体的普遍性，而不是大气水，在磁铁矿期间-石榴石矽卡岩形成。两大类流体包裹体，即水相（LV、LVS）和水-碳相（LV _C、LL _C V _C)，在石榴石和石英脉中得到认可，尤其是在生长区和沿粒内轨迹，比簇中的流体包裹体组合 (FIA) 显示得更好。的顺行磁铁矿石榴石夕由交代流体在相对较高的形成Ť _ħ（209-374℃），的〜200巴的岩石静压力下。逆行矿化石英脉是在 124°C 至 256°C 的温度范围内通过稀释和较少盐分（2.57-11.93 wt% NaCl eq.）热液在约 80 巴的静水压力下形成的。Aghbolaq矽卡岩的流体演化开始于前行阶段交代流体的较早简单冷却，随后在逆行阶段低盐度大气流体的流入。