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作　　者：王春连(图) WANG Chun-lian

机构地区：[1]不详

出　　处：《地球学报》2022年第4期F0004-F0004,共1页Acta Geoscientica Sinica

摘　　要：云南红河州离子吸附型稀土矿剖面及化学浸取雪花状离子吸附稀土。通过实施“化学地球”大科学计划和1:25万、1:5万地球化学调查,圈定稀土异常超常富集区9处。其中在松潘-甘孜造山带、扬子克拉通与华南造山带的交汇处,发现形成于印支期和燕山期花岗岩以及元古界花岗质片麻岩和变粒岩上方的风化壳矿体。经剖面测量和29个钻孔验证,现已查明该风化壳矿体平均厚度6~13 m,平均品位0.14%。REE ion-adsorption profile from a site in Honghe,South Yunnan and snowflake-like ion-adsorbed REEs determined using field chemical analyses.A total of 9 REE-enriched geochemical provinces were delineated throughout China by the Mapping Chemical Earth Program-China Geochemical Baselines project and geochemical surveys at scales of 1:250000 and 1:50000.An HREE-enriched ore body hosted in regolith developed from Indosinian and Yanshanian granites and Proterozoic gneiss and leptynite protoliths has been discovered at the boundary region of the Songpan-Ganzi orogenic belt,Yangtze Craton and Southern China orogenic belt in Honghe.

关 键 词：燕山期花岗岩 离子吸附型稀土矿 风化壳 华南造山带 花岗质片麻岩 地球化学调查 变粒岩 钻孔验证 

分 类 号：P588.1[天文地球—岩石学]