新疆南天山东段长泉山铁矿矽卡岩特征及成因  

Characteristics and Genesis of Skarn in Changquanshan Iron Mine in the Eastern Part of South Tianshan Mountains,Xinjiang

作　　者：郭勇明 吴晓贵 祖力哈尔 马晓涛 李新峰 赵云江 Guo Yongming;Wu Xiaogui;Zulihaer;Ma Xiaotao;Li Xinfeng;Zhao Yunjiang(Xinjiang Baodi Mining Co.,Urumqi,Xinjiang,830000,China;No.1 Geological Team of Xinjiang Bureau of Geology and Mineral Resource,Changji,Xinjiang,831100,China;No.1 Geological Party,Xinjiang Bureau of Geology and Mineral Exploration and Development)

机构地区：[1]新疆天山矿业开发有限责任公司,新疆库尔勒841000 [2]新疆宝地矿业股份有限公司,新疆乌鲁木齐830000 [3]新疆维吾尔自治区地质矿产勘查开发局第一地质大队,新疆昌吉831100

出　　处：《新疆地质》2023年第2期204-209,共6页Xinjiang Geology

摘　　要：长泉山铁矿床位于南天山东段,矿体赋存于碳酸盐岩与岩体接触带矽卡岩中。矿体主要呈层状、似层状、透镜状,近矿围岩蚀变强烈,形成透辉石矽卡岩、透辉石榴矽卡岩、石榴石绿帘石矽卡岩等镁质矽卡岩。通过矿床地质特征、矿物学及矿石地球化学特征分析认为,矿石经过一个热液交代作用过程,表明长泉山铁矿的形成与岩浆热液交代作用有关。Located in the middle of Eastern part of South Tianshan Mountains,the Changquanshan iron deposit is host-ed in shallow marine carbonate rocks of saarming formation of Middle Devonian.The ore body is mainly layered,stra-toid and lenticular.The wall rock near the ore is strongly altered,forming magnesian skarns such as diopside skarn,diop-side garnet skarn and garnet epidote skarn.Through the analysis of ore geochemical characteristics,combined with the geological characteristics and mineralogical study of the deposit,it is considered that the ore has undergone a process of hydrothermal metasomatism,indicating that the formation of Changquanshan iron ore is related to magmatic hydrother-mal metasomatism.

关 键 词：长泉山铁矿床 地球化学特征 矽卡岩 磁铁矿 

分 类 号：P618.31[天文地球—矿床学] P588.312[天文地球—地质学]