Cerros Taguas is one of the high-sulfidation epithermal Au-Ag deposits (131.35 Mt @ 0.29 g/t Au, 8.8 g/t Ag, 0.11% Cu) of the Taguas project, located in the northern sector of the El Indio belt (~ 29°S), Central Andes, Argentina. Zircon LA-ICP-MS U-Pb dating of a rhyolitic tuff that hosts Au-Ag mineralization constrain the timing of volcanism to the middle Miocene (12.14 ± 0.14 to 11.85 ± 0.26 Ma). Above 3800 m.a.s.l., the rocks display advanced argillic alteration, characterized by alunite + pyrophyllite + dickite ± diaspore ± topaz. Hypogene alunite associated with epithermal Au-Ag mineralization yielded a ⁴⁰Ar/³⁹Ar plateau date of 9.5 ± 0.4 Ma. Below 3800 m.a.s.l., the presence of sericitic alteration (muscovite + illite + quartz) and a molybdenum halo associated with molybdenite-bearing B-type and pyrite ± quartz D-type veins suggests a transition from epithermal to porphyry-style mineralization. Molybdenite in quartz-dominated B-type veins and molybdenite ± quartz veins cross-cutting the rhyolitic tuff yielded ID-NTIMS Re-Os dates of 10.60 ± 0.06 and 10.48 ± 0.05 Ma. A nominally older molybdenite ID-NTIMS Re-Os date (11.10 ± 0.11 Ma) was obtained for the hydrothermal cement of a breccia. The timing of molybdenum mineralization at Cerros Taguas was broadly coeval with the emplacement of inter-mineralization porphyritic stocks and slightly older than molybdenite mineralization in the nearby Valeriano and El Encierro porphyry deposits. The occurrence of a porphyry-style mineralization at Cerros Taguas reflects the prospectivity for porphyry deposits beneath Miocene-age volcanic rocks and advanced argillic alteration zones in the northern sector of the El Indio belt.

Cerros Taguas 是 Taguas 项目的高硫化浅成热液金银矿床之一（131.35 Mt @ 0.29 克/吨金、8.8 克/吨银、0.11% 铜），位于 El Indio 地带的北段（ ~ 29°S)，安第斯山脉中部，阿根廷。对含金银矿化的流纹质凝灰岩进行锆石 LA-ICP-MS U-Pb 定年，将火山活动的时间限制在中新世中期（12.14 ± 0.14 至 11.85 ± 0.26 Ma）。高于 3800 masl，岩石显示出高级的泥质蚀变，其特征为明矾石 + 叶蜡石 + 地开石 ± 硬水铝石 ± 黄玉。与浅成热液金银矿化相关的深近系明矾石产生了 9.5 ± 0.4 Ma 的⁴⁰ Ar/ ³⁹ Ar 平台日期。低于 3800 masl，绢云母蚀变（白云母 + 伊利石 + 石英）的存在以及与含辉钼矿 B 型和黄铁矿 ± 石英 D 型脉相关的钼晕表明从浅成热液到斑岩型矿化的转变。以石英为主的 B 型矿脉中的辉钼矿和横切流纹质凝灰岩的辉钼矿 ± 石英矿脉得出的 ID-NTIMS Re-Os 日期为 10.60 ± 0.06 和 10.48 ± 0.05 Ma。对于角砾岩的热液胶结物，获得了名义上较老的辉钼矿 ID-NTIMS Re-Os 日期（11.10 ± 0.11 Ma）。 Cerros Taguas 钼矿化的时间大致与矿化斑岩矿床的侵位同时，并且比附近 Valeriano 和 El Encierro 斑岩矿床的辉钼矿矿化时间稍早。 Cerros Taguas 斑岩型矿化的出现反映了 El Indio 地带北段中新世火山岩和高级泥质蚀变带下斑岩矿床的前景。