| 杨定炳,李晓红,杨丰铭.古永花岗岩体中段风化壳离子吸附型稀土矿床地质特征及找矿[J].矿产勘查,2026,17(S1):66-74 |
| 古永花岗岩体中段风化壳离子吸附型稀土矿床地质特征及找矿 |
| Geological characteristics and prospecting of ion-adsorption type rare earth deposit in the weathering crust of the middle section of the Guyong granite body |
| 投稿时间：2024-12-29 修订日期：2025-12-02 |
| DOI：10.20008/j.kckc.2026S1008 |
| 中文关键词: 离子吸附型稀土矿床 矿化分布 三维地质建模和三维切割剖面 控制因素 腾冲 |
| 英文关键词: ion-adsorption type REE deposit mineralization distribution 3D geological modeling and 3D cutting profiles control factors Tengchong |
| 基金项目:《矿产勘查》杂志是经国家新闻总署批准、由《有色金属矿产与勘查》《岩土工程界》相继更名而来，是中国有色金属工业协会主管，有色金属矿产地质调查中心主办，中国有色金属工业协会地质矿产分会、中国有色金属学会地质学术委员会、中国地质学会矿山地质专业委员会联合协办的地学和矿业领域综合性技术类刊物。 |
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| 中文摘要: |
| 古永花岗岩体中段风化壳离子吸附型稀土矿床，位于青藏高原东南缘巨型构造-岩浆成矿带南缘，腾冲多金属（Sn-W-Be-Nb-Ta-Rb-Li-Fe-Zn-Au）成矿带（腾冲岩浆弧）之槟榔江（喜山期岩浆弧）多金属（Be-Nb-Ta-Rb-W-Sn-Au）矿带东部。近年来滇西地区尤其是腾冲、梁河、陇川及盈江地区相继发现多处大、中型花岗岩体风化壳离子吸附型稀土矿床。前人对该区稀土矿床的形成条件、矿床特征进行了较多研究，但对该类型矿床在滇西高海拔地区的矿化分布控制因素方面的研究仍相对薄弱。笔者通过对腾冲地区某离子吸附型稀土矿化地质特征分析，借助三维地质建模和三维切割剖面技术，对研究区矿化分布和地形地貌空间关系以及控制因素进行初步研究。得出如下认识：（1）矿体在空间上主要呈不规则的条状分布，或多个条状组合成的不规律面状分布；矿体产状多变；（2）矿化以富集轻稀土为主，局部富集重稀土，是以低钇低铕轻稀土为主的稀土矿床；（3）矿化受地形地貌控制作用明显，具体表现为矿体走向整体平行于山脊走向，矿体倾向整体垂直于山脊走向（山坡方向）；（4）矿化主要局限于花岗岩风化壳内；（5）花岗岩发育的平缓山脊地带是找矿有利区。 |
| 英文摘要: |
| Aion-adsorption type REE deposit in the weathering crust of a granite body in Tengchong， located in the eastern part of the Binlang River polymetallic （Be-Nb-Ta-Rb-W-Sn Au） metallogenic belt （Tengchong magmatic arc） of the Tengchong polymetallic （Sn-W-Be-Nb-Ta-Rb Li Fe Zn Au） metallogenic belt. In recent years， multiple large and medium-sized granite weathering crust ion adsorption rare earth deposits have been discovered in the western Yunnan region， especially in Tengchong， Lianghe， Longchuan， and Yingjiang areas. Previous studies have extensively investigated the formation conditions and characteristics of rare earth deposits in this area， but research on the mineralization distribution and controlling factors of this type of deposit in high-altitude areas of western Yunnan is still relatively weak. The author conducted a preliminary study on the distribution of mineralization in the working area， the spatial relationship between topography and geomorphology， and the controlling factors through the analysis of the geological characteristics of a certain ion adsorption type rare earth mineralization in the Tengchong area， using three-dimensional geological modeling and three-dimensional cutting profile technology. The following understanding can be drawn：（1） The ore body is mainly distributed in an irregular strip shape in space， or in an irregular planar distribution composed of multiple strip shapes； The occurrence of the ore body varies greatly； （2） Mineralization is mainly enriched in light REE， with local enrichment in heavy REE， and is an ion-adsorption type REE deposit dominated by low yttrium and low europium light REE； （3） Mineralization is significantly controlled by the terrain and landforms， manifested in the clear control of mineralization direction by the ridge direction， and the ore body inclination is opposite along both sides of the ridge； （4） Mineralization is mainly limited to the weathering crust of granite； （5） The relatively gentle areas on both sides of the granite developed ridges， and the valley zone in the middle of adjacent ridges， where mineralization has been discovered are favorable areas for mineral exploration. |
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