摘要
新疆北部希勒库都克铜钼矿床成矿岩体与火山岩围岩为同时代、同空间、同组分,可能属同一火山建造,提供了成矿岩体可能产于火山机构中的浅成、超浅成中酸性次火山斑岩体的信息.钼矿体产于英安斑岩-石英闪长斑岩内外接触带的细脉、网脉状石英中.岩浆期后的热液作用形成了铜钼矿体及强烈的钾长石化、硅化、矽卡岩化、石英-绢云母化等热液蚀变,同时岩浆的侵入使围岩产生角岩化热变质,蚀变越强,矿化越富.本区成矿流体沸腾对成矿不起主要作用,上升至浅部的岩浆直接分异出来的高盐度流体随温度降低,CO2等气体溢出、NaCl的沉淀等物理化学条件的改变造成流体中金属络合物的分解、辉钼矿等沉淀成矿.
Our reserch recognized that the Xilekuduke copper-molybdenum deposit in north Xinjiang intrusion is same time,same space and same components with wall-rocks.The igneous structure controls the orebodies,and this offered that the informations that intrusion is shallow and e×ceed shallow intermediate-acidity sub-volcano porphyry in igneous structure.The mineralize belong to sub-volcano porphyry copper-molybdenum deposit.Molybdenum orebodies is thin and network quartveins inside and outside contacting zone of trondhjemite porphyry-quartz-diorite-porphyry.The copper-molybdenum orebodirs and stronger alterrations of K-silicate,silicate,skarns and quartz-sericite and hornfelsed alterration in wall-rock are produced by hydrothermal process.The alterrasion is stronger,and the mineralize is more richer.The boiling is not mostly action for mineralization and alow with the temperrature of high salinity fluid come from directness magma differentiation is depressed and the CO2 gas is overflowed and NaCl is precipitation and et al.,the complex is break down,the molybdenite is deposited.
出处
《新疆地质》
CAS
CSCD
北大核心
2010年第4期393-401,共9页
Xinjiang Geology
基金
国家重点基础研究发展规划项目(2007CB411304和2001CB409806)
国家自然基金项目(40672061)联合资助
关键词
新疆北部
希勒库都克铜钼矿床
成矿岩体
火山建造
蚀变
成矿流体
Ore-forming rock
Igneous structure
Alterrations
Ore-forming fluid
Xilekuduke copper-molybdenum deposit
North Xinjiang Province
