格陵兰岛稀土资源潜力分析

    Potential Analysis of Rare Earth Resources in Greenland

    • 摘要: 格陵兰岛目前已发现包括世界第二大稀土矿Kvanefjeld矿在内的14个稀土矿床,这些稀土矿床的地质背景各不相同,成矿年龄跨度很大。根据矿床成因类型可以划分为与碱性岩有关的稀土矿、与碳酸岩有关的稀土矿、铁氧化物铜-金(IOCG)型稀土矿、与伟晶岩有关的稀土矿以及砂矿5类。对格陵兰岛40个稀土资源潜力区域进行成矿条件分析,结合有利成矿地质条件对潜力区进行了赋值评价。总结可凡湾稀土矿床的放射性、地球化学、遥感热红外、重砂等多种综合异常信息,在Garder碱性岩省圈定了4处稀土成矿远景区。格陵兰岛南部的碱性岩省是发现稀土矿床最有潜力的区域,西部的碳酸岩区和东部碱性岩区也具备稀土找矿前景。

       

      Abstract: Greenland has now discovered 14 rare earth deposits, including Kvanefjeld, the world's second largest rare earth deposit. The geological settings of the deposits vary and the metallogenic ages span widely. According to the genetic of the deposit, it can be divided into 5 types: those related to alkaline rocks, carbonate type, iron oxide copper-gold (IOCG) type, pegmatites and placer ores. The metallogenic conditions of 40 potential rare earth resource areas in Greenland were analyzed, and the value assignment evaluation of the potential areas was carried out. Summarizing the radioactivity, geochemistry, remote sensing thermal infrared, placer and other comprehensive anomaly information of the Kvanefjeld rare earth deposit, and 4 rare earth metallogenic prospect areas are delineated in Garder province of alkaline. The alkaline province in southern Greenland is the most promising area for the discovery of rare earth deposits, and the carbonate area in western Greenland and the alkaline area in eastern Greenland are also prospective for rare earth prospecting.

       

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