川西甲基卡矿田浅变质岩地球化学特征及与锂超常富集关系研究OA
Geochemical characterization of shallow metamorphic rocks in western Sichuan Jiajika lithium field and relationship with lithium over-enrichment
甲基卡硬岩型锂矿成矿物质来源为围岩变质沉积岩,对围岩变质沉积岩锂富集关键因素的研究对于揭示多圈层物质循环过程和完善成矿模式具有重要意义.文章运用文献综述、地质调查、岩矿分析、地球化学测试等方法,对甲基卡矿田的地质背景、岩性特征、地球化学特征等方面进行了深入研究.研究发现,松潘-甘孜构造带成矿构造单元、晚三叠世二长花岗岩和接触变质作用对锂的富集有着重要作用.花岗伟晶岩型锂矿床的形成以及区域岩浆活动与松潘-甘孜构造带成矿构造单元密切相关;围岩变质沉积岩中的锂元素在红柱石十字石片岩→红柱石片岩 黑云母片岩这种变质分带形成过程中逐渐富集.文章揭示了松潘-甘孜构造带甲基卡矿田花岗伟晶岩型锂矿床围岩变质沉积岩锂富集的关键因素,为揭示锂循环过程,完善成矿模式提供依据.
The aim of this study is to investigate the key factors of lithium enrichment in the granitic pegmatite-type lithium deposits in the enclosing metamorphic sedimentary rocks of the Jiajika mine field in the Songpan-Ganzi tectonic belt.The geological background,lithological features,and geochemical characteristics of the Jiajika Mine Field were studied in depth by means of literature review,geological survey,rock and mineral analysis,and geochemical tests.It is found that the regional tectonic background,magmatic activity and metamorphism are the key factors affecting lithium enrichment.Specifically,the formation of granitic pegmatite-type lithium deposits and the regional magmatic activities are closely related to the metallogenic tectonic unit of the Songpan-Ganzi tectonic belt;the lithium elements in the surrounding metamorphic sedimentary rocks were enriched during the metamorphic process.This study reveals the key factors of lithium enrichment in the metamorphic sedimentary rocks surrounding the granitic pegmatite-type lithium deposits in the Jiajika field of the Songpan-Ganzi tectonic belt,and provides a theoretical basis for the exploration and development of lithium deposits in this area.
张皓然;代鸿章;刘晓敏;刘善宝;王成辉;文佳豪;高原
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,北京 100037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,北京 100037山东省第三地质矿产勘查院,山东烟台 264004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,北京 100037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,北京 100037成都理工大学地球与行星科学学院,四川成都 610059成都理工大学地球与行星科学学院,四川成都 610059
天文与地球科学
岩石地球化学围岩变质沉积岩花岗伟晶岩型锂矿床松潘-甘孜构造带甲基卡矿田
rock geochemistryenclosing metamorphic sedimentary rocksgranitic pegmatite-type lithium depositsSongpan-Ganzi tectonic beltJiajika field
《矿床地质》 2026 (3)
574-592,19
本文得到国家重点研发计划项目"我国西部伟晶岩型锂等稀有金属成矿规律与勘查技术"(编号:2021YFC22901900)中国地质科学院深地探测与矿产勘查全国重点实验室基本科研业务费项目"(编号:JKYDM2025106)中国地质科学院基本科研业务费专项经费资助"松潘-甘孜锂稀有金属重点成矿带成矿模式研究"(编号:KK2413)中国地质调查局项目"战略新兴产业矿产地质调查工程"(编号:DD20230034)自然资源部新一轮找矿突破战略行动科技支撑项目"松潘-甘孜锂稀有金属矿关键勘查技术与找矿预测模型"(编号:ZK-KJ202412)四川大中赫锂业有限公司项目"加达锂矿优选靶区验证地质研究技术服务"(编号:HE2322)"四川省马尔康市加达锂矿地质详查(勘探)"(编号:HE2327)联合资助
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