云南省石缸河锡钨矿床成矿条件及成矿模式探讨  

Metallogenic Conditions and Metallogenic Model of Shiganghe Tin-Tungsten Deposit in Yunnan Province

作　　者：沈良 姜永果 郑义舟 杨金富 梁兴宇 SHEN Liang;JIANG Yongguo;ZHENG Yizhou;YANG Jinfu;LIANG Xingyu(Geological,Geophysical and Chemical Exploration Institute of Yunnan Nonferrous Geological Bureau)

机构地区：[1]云南省有色地质局地质地球物理化学勘查院

出　　处：《现代矿业》2024年第4期69-73,78,共6页Modern Mining

摘　　要：石缸河矿区总体挟持于怒江断裂带与澜沧江板块结合带之间,在系统收集矿区地质资料的基础上,结合详实的野外地质调查工作,系统厘定矿区成矿地质背景,总结矿床成矿条件及成矿模式。经总结,滇西“歹”字型构造体系控制着矿床锡钨矿带的空间分布,石缸河锡钨矿床总体产于层间破碎带中,空间位置位于志本山岩体的外接触带内;区内岩浆活动剧烈、频繁,燕山晚期至喜马拉雅期的酸性花岗岩与矿床成矿关系密切;矿区内地质构造复杂,志本山背斜、石缸河平卧褶皱及北西向断裂组共同控制着矿(化)体的产出;矿床严格受构造-岩浆-变质作用控制,总体属于与混合岩化派生岩浆有关的高-中温热液矿床。The Shiganghe mining area is generally held between the Nujiang fault zone and the Lancang River plate junction zone.On the basis of systematically collecting the geological data of the mining area,combined with detailed field geological survey work,the metallogenic geological background of the mining area is systematically determined,and the metallogenic conditions and metallogenic models of the deposit are summarized.It is concluded that the spatial distribution of the tin-tungsten ore belt in the deposit is controlled by the‘歹’-shaped structural system in western Yunnan.The Shiganghe tin-tungsten deposit is generally produced in the interlayer fracture zone,and the spatial location is located in the outer contact zone of the Zhibenshan rock mass.The magmatic activity in the area is intense and frequent,and the acidic granite from the late Yanshan period to the Himalayan period is closely related to the mineralization of the deposit.The geological structure in the mining area is complex.The Zhibenshan anticline,the Shiganghe horizontal fold and the NW-trending fault group jointly control the output of the ore(mineralization)body.The deposit is strictly controlled by tectonic-magma-metamorphism,and generally belongs to high-medium temperature hydrothermal deposit related to migmatization derived magma.

关 键 词：锡钨矿 成矿条件 成矿模式 

分 类 号：P618.44[天文地球—矿床学] P618.67[天文地球—地质学]