湖南省东坡-香花岭地区锡矿成矿地质条件及找矿前景

湖南省东坡—香花岭地区是湘东南地区有色矿产资源分布最集中的地区之一,区内矿床类型有热液充填交代—构造破碎带型、热液交代—蚀变岩体型、矽卡岩型、外生成因的机械沉积型等多种。该区地层出露齐全,其中震旦系、寒武系、泥盆系地层为锡矿的矿源层。经历了多旋回构造运动,多期次、多阶段的岩浆侵入,构造及其发育且大面积出露复式花岗岩体,特别是燕山期侵入岩体与成矿关系最为密切。在介绍成矿地质背景的基础上,对区内的锡多金属矿床的成矿特征、成矿机理、成因等进行总结,对区内地层、构造、岩浆岩等成矿地质条件及东坡、香花岭矿集区找矿前景进行初步分析,认为该区具有非常大的找矿潜力。

The Metallogenic Geological Conditions and Prospecting Prospects of Tin Deposits in Dongpo-Xianghualing Area,Hunan Province

Dongpo-Xianghualing area is one of the most concentrated areas of nonferrous mineral resources in southeast Hunan.The deposit types in the area include:hydrothermal filling metasomatism structural fracture zone type,hydrothermal metasomatic altered rock type tin deposit,skarn type,exogenetic mechanical sedimentary type etc.The strata in this area are full exposed,and the Sinian,Cambrian and Devonian strata are the source beds of tin deposits.It has experienced multi-cycle tectonic movement,multi-stage and multi-stage magmatic intrusion,structure and its development,and large area of outcropping,especially Yanshanian intrusive rock body is most closely related to mineralization.Based on the introduction of metallogenic geological background,this paper summarizes the types and characteristics of tin polymetallic deposits in this area,and makes a preliminary analysis of its metallogenic geological conditions and prospecting prospects,and concludes that the area has a very large potential for prospecting.