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| 锂同位素及其在四川甲基卡伟晶岩型锂多金属矿床研究中的应用 | |
| 引用本文： | 苏嫒娜,田世洪,侯增谦,李建康,李真真,侯可军,李延河,胡文洁,杨竹森. 锂同位素及其在四川甲基卡伟晶岩型锂多金属矿床研究中的应用[J]. 现代地质, 2011, 25(2) |
| 作者姓名： | 苏嫒娜 田世洪 侯增谦 李建康 李真真 侯可军 李延河 胡文洁 杨竹森 |
| 作者单位： | 1. 中国地质科学院矿产资源研究所国土资源部成矿作用与资源评价重点实验室,北京,100037;东华理工大学地球科学学院,江西抚州,344000 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资源评价重点实验室,北京,100037 3. 中国地质科学院地质研究所,北京,100037 4. 昆明理工大学国土资源工程学院,云南昆明,650093 |
| 基金项目： | 国家自然科学面上基金，国土资源部公益性行业科研专项，中国地质调查局国土资源大调查项目，中央级公益性科研院所基本科研业务费专项资金项目，中国地质科学院实验室基金 |
| 摘 要： | 锂同位素在地质学、地球化学研究中有着广阔的应用前景。简单介绍了锂同位素研究已取得的进展,并在四川甲基卡伟晶岩型锂多金属矿床研究中开展应用。研究表明,四川甲基卡锂矿床中2件锂辉石的锂含量非常高,分别为33 592×10-6和34 264×10-6,相应的δ7Li值分别为-0.6‰和-0.4‰,平均值为-0.5‰,而二云母花岗岩中黑云母的锂含量为7 350×10-6,δ7Li值为+0.6‰,两者在误差范围内具有非常好的一致性,证明锂辉石来源于二云母花岗岩,这与其他包裹体、同位素地球化学和年代学证据等相一致。 |
| 关 键 词： | 地球化学 锂同位素 伟晶岩 锂多金属矿床 四川甲基卡 |
Lithium Isotope and Its Application to Jiajika Pegmatite Type Lithium Polymetallic Deposit in Sichuan |
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| SU Ai-ha,TIAN Shi-hong,HOU Zeng-qian,LI Jian-kang,LI Zhen-zhen,HOU Ke-jun,LI Yan-he,HU Wen-jie,YANG Zhu-sen. Lithium Isotope and Its Application to Jiajika Pegmatite Type Lithium Polymetallic Deposit in Sichuan[J]. Geoscience of Geosciences, 2011, 25(2) | |
| Authors: | SU Ai-ha TIAN Shi-hong HOU Zeng-qian LI Jian-kang LI Zhen-zhen HOU Ke-jun LI Yan-he HU Wen-jie YANG Zhu-sen |
| Affiliation: | SU Ai-na1,2,TIAN Shi-hong1,HOU Zeng-qian3,LI Jian-kang1,LI Zhen-zhen4,HOU Ke-jun1,LI Yan-he1,HU Wen-jie1,YANG Zhu-sen1(1.MLR Key Laboratory of Metallogeny and Mineral Assessment,Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China,2.College of Earth Sciences,East China Institute of Technology,Fuzhou,Jiangxi 344000,3.Institute of Geology,4.Land Resources Engineering College,Kunming University of Science ... |
| Abstract: | As a useful geochemical tracer,lithium isotope system has been used to study some important geological or geochemical issues.This paper summarizes the recent advances in research on lithium isotopes and its application to Jiajika pegmatite type lithium polymetallic deposit in Sichuan.The Jiajika deposit is the largest pegmatite type Li-polymetallic deposit in China.Samples from Jiajika deposit were analysed by MC-ICP-MS in the University of Maryland.Two samples of spodumene contain 33592×10-6 and 34264×10-6 Li and have δ7 Li values of-0.6 ‰ and-0.4‰.One sample of biotite in two-mica granite contains 7350×10-6 Li and has δ7Li value of +0.6‰.They are consistent in the uncertainty range.Therefore,following interpretations of published data of C,H and O isotopes,fluid inclusions and chronology,we consider that spodumenes in the lithium polymetallic deposit may have originated from the granite,suggesting that ore-forming fluids were also derived from the granite. |
| Keywords: | geochemistry lithium isotope pegmatite lithium polymetallic deposit Jiajika in Sichuan |
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