新疆阿尔金地区黄龙岭超大型伟晶岩型锂矿床的发现及找矿意义
Discovery of the Huanglongling giant lithium pegmatite deposit in Altyn Tagh, Xinjiang, China
查看参考文献27篇
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文摘
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阿尔金造山带位于青藏高原北缘,处于柴达木地块、祁连-昆仑造山带及塔里木地块之间,是由原特提斯洋俯冲碰撞/增生造山作用所形成的复合型造山带。阿尔金地区花岗伟晶岩相当发育,2018年以来,在这些花岗伟晶岩中陆续发现了瓦石峡南锂矿、恰达克锂矿、吐格曼锂铍矿、阿亚克锂矿、库木萨依锂矿、沙梁西锂矿、塔什达坂锂矿等一批中型矿床,使该地区也成为了我国伟晶岩型锂矿的找矿新区带。研究团队通过多次野外勘查、系统取样与室内化验分析,确认在新疆若羌县库木达坂东的黄龙岭地区发现了一处超大型花岗伟晶岩型锂多金属矿床。初步圈定出一条长大于4500m、宽大于1000m的含锂辉石矿伟晶岩脉群;在该伟晶岩群内圈出16个矿体,各矿体长约370 ~ 4230m,厚1.2 ~ 40.85m,Li_2 O平均品位1.26% ~ 3.60%。初步估算矿区潜在Li_2 O资源量为186.08万t,伴生4.95万t BeO和11.85万t Rb_2 O,达到超大型远景规模,有望成为一个世界级的巨型锂矿床。黄龙岭超大型锂矿的发现,实现了阿尔金地区稀有金属矿产找矿的重大突破,该地区有望成为我国一个新的重要锂资源基地。 |
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其他语种文摘
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The Altyn Tagh orogenic belt is located in the northern margin of the Qinghai-Tibetan Plateau, and is bounded by the Qaidam block, the Qilian-Kunlun orogenic belt and the Tarim block, and is a composite orogenic belt formed by subduction collision/accretion of the Tethys Ocean. Granitic pegmatites are well developed in the Altyn Tagh orogenic belt. A number of medium-scaled lithium deposits have been discovered in the pegmatites since 2018, such as Washixia South, Chadake, Tugeman, Ayak, Kumusaiyi, Shaliangxi and Tashidaban, making the belt a new prospecting area for pegmatite-type lithium deposits in China. Recently, a new pegmatite-type lithium deposit is discovered in the Huanglongling region, east of the Kumudaban region in the Ruoqiang County, Xinjiang. The deposit is hosted in a swarm of pegmatite veins with spodumene, which extend more than 4500m in length and more than 1000m in width. Sixteen ore bodies have been found in the pegmatite veins, and they range in length from 370m to 4230m and from 1.2m to 40.85m in thickness. The ores have an average grade of Li_2 O being 1.26% ~3.60%. The potential resources of the deposit are estimated to be ca. 1,860,800 tons of Li_2 O, associated with ca. 49,500 tons of BeO and ca. 118,500 tons of Rb_2 O, which can be taken as a prospecting area and potentially giant lithium deposit. This discovery is a breakthrough in the exploration of rare metals in the Altyn Tagh orogenic belt. |
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来源
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岩石学报
,2023,39(11):3307-3318 【核心库】
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DOI
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10.18654/1000-0569/2023.11.06
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关键词
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黄龙岭锂矿床
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伟晶岩
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找矿意义
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阿尔金
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新疆
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地址
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1.
中国科学院广州地球化学研究所, 广州, 510640
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中国科学院大学, 北京, 100049
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新疆自然资源与生态环境研究中心, 乌鲁木齐, 830000
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中国科学院地球化学研究所, 贵阳, 550002
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-0569 |
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学科
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地质学 |
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基金
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国家重点研发计划专项项目
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中国科学院前瞻战略科技先导专项
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文献收藏号
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CSCD:7583222
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