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综合勘查方法在硬岩型锂矿找矿中的应用—以马尔康稀有金属矿田加达锂矿为例
投稿时间:2019-10-30  修订日期:2020-06-18  点此下载全文
引用本文:
DOI:10.19762/j.cnki.dizhixuebao.2020239
摘要点击次数: 71
全文下载次数: 40
作者单位E-mail
马圣钞 中国地质科学院矿产资源研究所 mashengchao2009@126.com 
王登红 中国地质科学院矿产资源研究所 自然资源部成矿作用与资源评价重点实验室  
刘善宝 中国地质科学院矿产资源研究所 自然资源部成矿作用与资源评价重点实验室  
王成辉 中国地质科学院矿产资源研究所 自然资源部成矿作用与资源评价重点实验室  
代鸿章 中国地质科学院矿产资源研究所 自然资源部成矿作用与资源评价重点实验室  
饶魁元 四川省核工业地质局282大队  
丁晓平 四川省核工业地质局282大队  
朱海洋 四川省核工业地质局282大队  
邓子清 四川省核工业地质局282大队  
郭玮鹏 四川省核工业地质局282大队  
基金项目:国家重点研发计划项目(编号 2017YFC0602700、2017YFC0602701)和中国地质调查项目(编号DD20190379)及中央级公益性科研院所基本科研业务费(编号 JYYWF20183701、JYYWF20183704)
中文摘要:松潘-甘孜造山带马尔康矿田是我国目前面积最大的伟晶岩型稀有金属矿田,分布有业隆、李家沟、党坝等多处大—中型锂辉石矿床。由于地表基岩露头有限,水系切割强烈,在深部寻找隐伏矿脉的难度逐渐增加。本文以马尔康矿田东北部新发现的加达大型锂辉石矿床为例,论述了地质填图、高密度电法等在寻找隐伏矿脉中的应用。本次勘查通过地质填图圈定的残-坡积锂辉石伟晶岩转石带或伟晶岩露头确定了脉体走向,通过高密度电法测量圈定的陡倾高阻异常确定了脉体倾向,通过钻探工程控制了隐伏矿脉。综合分析显示,陡倾高阻异常带延伸至地表位置与地表锂辉石伟晶岩转石带或伟晶岩脉露头位置吻合,隐伏高阻异常空间分布与隐伏锂辉石伟晶岩脉具有相关性,表明传统勘查方法在寻找伟晶岩型锂矿为代表的硬岩型锂矿床的有效性,并指出区域成矿潜力和找矿方向。
中文关键词:马尔康  加达  锂辉石伟晶岩  找矿方法  成矿规律
 
The application of comprehensive prospecting methods on the hard rock type lithium deposit --a case study of Jiada lithium mine of Maerkang rare metals orefield
Author NameAffiliationE-mail
mashengchao Shandong Zhengyuan Geological Exploration Institute belongs to China Metallurgical and Geological Bureau mashengchao2009@126.com 
Wang Denghong MNR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences  
liu shanbao MNR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences  
wangchenghui MNR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences  
Daihongzhang MNR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China  
raokuiyuan The 282 Brigade of Sichuan Nuclear Geology  
Ding Xiaoping The 282 Brigade of Sichuan Nuclear Geology,  
zhuhaiyang The 282 Brigade of Sichuan Nuclear Geology  
dengziqing The 282 Brigade of Sichuan Nuclear Geology  
guoweipeng The 282 Brigade of Sichuan Nuclear Geology  
Abstract:The Maerkang rare metal orefield located in the eastern of Songpan-Ganzi orogenic belt is the largest pegmatite-type rare metal orefield in China at present. There are several medium to large scale spodumene pegmatite deposits, include Guanyinqiao, Yelong, Lijiagou, Dangba, etc. Due to the limited outcrop of bedrock on the surface and deeply cutting of rivers on topography, it is more difficult to find hidden ore veins until now, which slows down the prospecting progress. In this paper, we take the new development of ore-prospecting in Jiada area as an example, and discuss the application of metallogenic theories and the practice of prospecting methods. The main contents are as follows: based on the original outcrop of spodumene pegmatite and the eluvial-slope gravel belts delineated by geological mapping, the trend of hidden pegmatite vein is judged; The tendency of pegmatite is also inferred by combining the hidden high resistivity anomaly zone delineated by high-density electrical method, at last ,the position of drilling hole is arranged, and the hidden lodes are controlled. Those prospecting methods are of great contribution on judgment the existence of hidden lodes and their continuity between the outcrops of pegmatite, and which is also effective on describe the conformity between the high resistance abnormal zone and the outcrop of spodumene pegmatite or the eluvial-slope gravel belts. At last, the prospecting direction for the eastern of Maerkang orefield is pionted out in the next step.
keywords:Ma"erkang, Jiada, spodumene pegmatite, rare metals, ore-forming regularity
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