独山县玉水镇方解石矿地质特征及成矿规律

Geological Characteristics and Metallogenic Regularity of the Calcite Deposit in Yushui Town, Dushan County

摘要: 本文以贵州省独山县玉水镇方解石矿详查报告为基础，系统分析了矿区的地质特征、矿体分布规律及成矿机制。研究表明，矿区位于扬子陆块江南造山带黔南坳陷区，主要含矿层位为石炭系上统黄龙组(C₂h)。矿体受北北东向和北北西向断裂构造控制，呈脉状或透镜状产出。矿石以巨晶方解石为主，化学成分稳定，白度和CaO含量均达到工业标准。成矿作用与区域构造活动及热液流体运移密切相关，断裂系统为成矿提供了通道和容矿空间。本文结合地质、构造及矿石化学数据，揭示了玉水镇方解石矿的成矿规律，为区域找矿及资源开发提供了理论支撑。

Abstract: Based on the detailed survey report of the calcite deposit in Yushui Town, Dushan County, Guizhou Province, this paper systematically analyzes the geological characteristics, ore body distribution patterns, and mineralization mechanism of the mining area. The study shows that the mining area is located in the Qiannan Depression of the Jiangnan Orogenic Belt within the Yangtze Block, with the main ore-bearing horizon being the Upper Carboniferous Huanglong Formation (C₂h). The ore bodies are controlled by NNE-trending and NNW-trending fault structures, occurring in vein or lenticular shapes. The ore is dominated by macrocrystalline calcite, with stable chemical composition, and both whiteness and CaO content meeting industrial standards. The mineralization is closely related to regional tectonic activities and hydrothermal fluid migration, where the fault system provides channels and ore-hosting spaces for mineralization. By integrating geological, structural, and ore chemical data, this paper reveals the metallogenic regularity of the Yushui Town calcite deposit, providing theoretical support for regional prospecting and resource development.