云南天根山桃花铅锌多金属矿床地质特征与找矿方向

Study on the Geological Characteristics and Prospecting of the Taohua Pb-Zn Polymetallic Deposit in the Tiangenshan Area of Yulong County, Yunnan Province

桃花铅锌多金属矿床位于三江地槽褶皱系与扬子地台的街接部位,该区域经历了多旋回构造运动及复杂的演化,具备有利的成矿构造地质背景与条件。本文在充分分析区域构造地质背景和详实的矿区地质调查的基础上,阐述了矿区地质特征,从矿区主要岩性及矿化特征、矿(化)体特征、矿石特征和围岩蚀变等方面综合分析了矿床地质特征,进而从大地构造环境、地层、构造、岩浆岩与成矿作用的关系、成矿物质来源等方面研究探讨了控矿因素,初步建立了成矿模式,探讨了矿床成因,并进行了成矿预测,提出了找矿标志与找矿方向,为该矿区的下一步找矿工作指明了方向,为区域找矿工作提供了有益的科学依据。

The Taohua Pb-Zn polymetallic deposit is located in the connection part of the Sanjiang geosynclinal fold system and Yangtze Platform which experienced polycyclic tectonic movement and complex evolution and has favorable ore-forming structural geological settings and conditions. Based on the analysis of the regional geological settings and detailed mining area geological survey, the mining area geological characteristics are described and the geological features of the ore deposit are studied, including the lithology, ore potentiality, mineralization, ore body characteristics, ore characteristics, and wall rock alteration. The ore control factors are discussed covering tectonic environment, ore controls, structures, magmatic rocks, and ore-forming material source. Finally, metallogenic model and ore genesis of the deposit are suggested, moreover, the prospecting criteria, prospecting direction, and metallogenic prognosis for the region are also discussed in the paper.