世界最大井采铁矿床——基律纳铁矿床研究现状与新进展Research Progress on the World Largest Underground Mining Iron Deposit—Kiruna Deposit in Northern Sweden
王丰翔;聂凤军;张伟波;曹毅;解小颖;
摘要(Abstract):
基律纳铁矿床位于瑞典北部拉普兰地区,是迄今为止世界上产于中-基性火山岩中规模最大的磷灰石-磁铁矿建造矿床,也是欧洲目前唯一正在开采的特大型铁矿山。研究表明,基律纳铁矿床受构造-岩浆控制作用明显,多产在古元古代花岗质绿片岩体内。矿体与围岩呈整合接触,在两者的接触带上,普遍发育钠长石化和钾长石化;矿石以高度富集磁铁矿和磷灰石为特征。根据切割关系和锆石U-Pb同位素测年,其成矿年龄为1.9~1.88Ga。依据其地质背景、围岩蚀变分带性和成矿流体的组分特征,将该矿床初步认定为铁氧化物IOCG型铁矿床。
关键词(KeyWords): 铁矿;基律纳;IOCG型矿床;地质特征;磷灰石-磁铁矿建造
基金项目(Foundation): 中国地质调查局项目“全球巨型成矿带区域构造与成矿地质背景对比研究”(1212011120326)
作者(Author): 王丰翔;聂凤军;张伟波;曹毅;解小颖;
Email:
DOI:
参考文献(References):
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