摘要
赣南九龙脑矿田位于南岭构造岩浆成矿带东段诸广山崇(义)—(大)余—(上)犹钨锡多金属矿集区,其最大特色以九龙脑成矿岩体为中心,产出一系列钨锡银铅锌铌钽多金属矿床(化),矿化类型包括内带外带热液石英脉型、矽卡岩型、破碎蚀变带型、云英岩型和蚀变花岗岩型,成矿时代始于印支期,燕山早期大爆发,成矿母岩为富含W、Sn等成矿元素的重熔“S”型花岗岩.本文在系统研究以往地质、地化和物探等资料的基础上,阐述了九龙脑矿田成矿地质特征和地层、构造、岩浆岩控矿作用,以及围绕九龙脑成矿岩体内外接触带由内到外发育高温钨锡矿床—中高温钨铅锌银矿床—中低温金银铅锌矿床的成矿与地球化学分带,总结了该区钨锡多金属矿床受构造岩浆岩联合控制呈现出“东西成行、北北东—北东成列”的等距性空间分布规律,建立了九龙脑矿田具成因联系的“多位一体”成矿模式.根据上述研究进行了成矿预测,优选九龙脑地区钨锡矿A类预测区4个,钨铅锌银矿、锡矿B类预测区各1个,金银铅锌矿C类预测区1个.
The Jiulongnao ore field is located in the Chongyi-Dayu-Shangyou W-Sn polymetallic ore concentration area of the eastern Nanling tectonic-magmatic metallogenic belt.It is polymetallic deposit characterized by the kind of mineralization combination of W-Sn-Ag-Pb-Zn-U-Nb-Ta,and produced around the Jiulongnao metallogenic rock body.There are five mineralization types,including quartz vein type,skarn type,broken altered zone type,greisen type,and altered granite type.The metallogenic period began in the Indosinian period and erupted in the Early Yanshanian period.The metallogenic parent rock is re-melted“S”type granite which is rich in ore-forming elements such as W and Sn.Based on the systematic research on the geological,geochemical,and geophysical data,this paper discusses the metallogenic geological characteristics and ore-controlling roles of formation,structure,and magmatic rocks.The metallogenic and geochemical zones of high temperature W-Sn deposit—medium-high temperature W-Pb-Zn-Ag deposit—medium temperature Au-Ag-Pb-Zn deposit are developed around the inner and outer contact zone of the Jiulongnao metallogenic rock body,showing an equidistant spatial distribution pattern of“east-west horizontal,NNE-NE vertical”.It can be concluded that the tungsten-tin polymetallic deposits in this area are controlled by the combination of structure and magmatic rocks.Through this study,the metallogenic model of“multi-part integration”with genetic connection in the Jiulongnao ore field is established,the metallogenic prediction is carried out,and the ore-prospecting direction in Jiulongnao area is proposed.
作者
陈伟
杨洲畬
廖志权
杨斌
丁明
Chen Wei;Yang Zhouyu;Liao Zhiquan;Yang Bin;Ding Ming(Geological Survey of Southern Jiangxi Province,Jiangxi Bureau of Geology,Ganzhou 341000,Jiangxi,China)
出处
《吉林大学学报（地球科学版）》
CAS
CSCD
北大核心
2022年第2期403-417,共15页
Journal of Jilin University：Earth Science Edition
基金
国家重点研发计划项目(2016YFC0600208)。
关键词
钨锡矿床
成矿地质特征
控矿作用
等距性
多位一体
成矿预测
九龙脑矿田
赣南
W-Sn deposit
metallogenic geological characteristics
ore-controlling role
equidistant characteristics
multi-part integration
metallogenic prediction
Jiulongnao ore field
southern Jiangxi
