水新芳;赵元艺;李九玲;卢伟;

• 1:中国地质大学
• 2:中国地质科学院矿产资源研究所国土资源部成矿作用与矿产资源评价重点实验室

摘要(Abstract)：

马尔姆杰格(Malmbjerg)斑岩型钼矿床位于格陵兰岛东岸古近纪火成岩省中,是靠近始新世沃纳布杰格(Werner Bjerge)杂岩体中3个钼矿床中最大的一个。马尔姆杰格矿床钼金属储量约26万t,辉钼矿化呈细脉-网脉状分布于岩体及其围岩中。与矿化有关的围岩蚀变有钾长石化、硅化、云英岩化、黄铁矿化等,具有斑岩型钼矿床的一些基本特点。矿床中辉钼矿ReOs年龄(25.8Ma)与黑云母花岗岩40 Ar/39 Ar年龄(25.7Ma)在误差范围内一致,表明辉钼矿矿化与花岗岩侵位是同时发生的,均为古近纪产物,与冈底斯成矿带中新生代斑岩成矿系统晚碰撞期发育的矿床形成时代较接近。马尔姆杰格斑岩型钼矿床形成于裂谷后期地壳抬升过程中该区最新的岩浆活动阶段,矿床外围及南部是重要的找矿远景区。

关键词(KeyWords)： 古近纪;钼矿床;马尔姆杰格;东格陵兰

Abstract:

Keywords:

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);; 中央地勘基金项目([2011]D3-09)

作者(Author): 水新芳;赵元艺;李九玲;卢伟;

Email:

DOI:

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