Fault-controlled carbonate-hosted Ba-F deposits occur in many major orogenic belts of the world and are important repositories of fluorine production required in various fields of chemical, metallurgical glass, ceramic, and cement industries. Here we investigate the poorly documented Shuanghe barite-fluorite deposit in the Yangtze Block of South China. This deposit offers an excellent case for studying the processes of formation of fault-controlled carbonate-hosted barite-fluorite mineral system. The orebodies in Shuanghe are hosted in carbonate rocks belonging to the early Ordovician Honghuayuan Formation and are dominantly controlled by NE-trending faults. Fluorite and barite exhibit similar rare earth element patterns with positive Eu anomalies and negative Ce anomalies. We report fluorite Sm–Nd isotopic data which yielded an isochron age of 103.1 ± 1.3 Ma. The δ¹⁸O_V‐SMOW values range from +0.2‰ to +1.1‰ and the δD_V‐SMOW values show a range of –33.1‰ to −26.3‰. The δ³⁴S_V-CDT values for barite range from 31.1‰ to 38.2‰. The bulk and in-situ Sr values for fluorite and barite show a range of 0.709081 to 0.712258. The petrological and geochemical data reported in this study suggest the following processes: (1) derivation of the ore-forming fluid from basinal water mixed with meteoric water; and (2) origin of the ore-forming components from Cambrian carbonate rocks, black shale, and Ordovician limestone. We propose a model that correlates the tectonic background of mineralisation with the Late Cretaceous subduction of the Paleo-Pacific Oceanic plate.

断层控碳酸盐岩赋存的 Ba-F 矿床分布于世界许多主要造山带，是化工、冶金玻璃、陶瓷和水泥工业等各个领域所需的氟生产的重要储存库。在这里，我们调查了华南扬子地块中记录不足的双河重晶石-萤石矿床。该矿床为研究断层控制的碳酸盐岩重晶石-萤石矿物系统的形成过程提供了极好的案例。双河矿体赋存于早奥陶世红花源组碳酸盐岩中，主要受NE向断裂控制。萤石和重晶石表现出相似的稀土元素模式，具有正 Eu 异常和负 Ce 异常。我们报告了萤石 Sm-Nd 同位素数据，其等时线年龄为 103.1 ± 1.3 Ma。δ¹⁸ O _V-SMOW值的范围为 +0.2‰ 至 +1.1‰，而 δD _V-SMOW值的范围为 –33.1‰ 至 -26.3‰。重晶石的 δ ³⁴ S _V-CDT值范围为 31.1‰ 至 38.2‰。萤石和重晶石的整体和原位 Sr 值显示在 0.709081 到 0.712258 的范围内。本研究报告的岩石学和地球化学数据表明以下过程：（1）从盆地水与大气水混合中衍生成矿流体；(2)寒武系碳酸盐岩、黑色页岩和奥陶系灰岩成矿组分的来源。我们提出了一个模型，将成矿的构造背景与古太平洋板块的晚白垩世俯冲联系起来。