| 刘策,吴永贵,龙正江.川南古叙矿区上二叠统龙潭组铌（钽）多金属矿赋存状态及资源潜力[J].矿产勘查,2026,17(S1):28-35 |
| 川南古叙矿区上二叠统龙潭组铌（钽）多金属矿赋存状态及资源潜力 |
| Occurrence state and resource potential of niobium （tantalum） polymetallic ore in the Longtan Formation of the Upper Permian System in the Guxu mining area， southern Sichuan |
| 投稿时间：2025-11-28 修订日期：2025-12-12 |
| DOI：10.20008/j.kckc.2026S1004 |
| 中文关键词: 煤型铌（钽）多金属 赋存状态 资源潜力 古叙矿区 |
| 英文关键词: coal-type niobium （tantalum） polymetallic occurrence state resource potential Guxu mining area |
| 基金项目:本文受四川省地质矿产勘查开发局地质矿产专项项目（SCDZ-DZKC202406）资助。 |
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| 中文摘要: |
| 川南古叙矿区煤炭资源丰富，其中煤型铌（钽）多金属具有较好的资源潜力。本文通过系统收集该区煤炭勘查资料并补充采样，分析了龙潭组C11煤层底板和C25煤层底板岩石中铌（钽）多金属及常量元素含量，总结了龙潭组煤层底板岩石铌（钽）多金属的富集特征、赋存状态；C11煤层底板中Nb、Ta达到风化壳型矿床最低工业品位，（Nb，Ta）2O5含量91.7～217.2 μg/g，平均162.78 μg/g，C25煤层底板中（Nb，Ta）2O5含量16.2～613.6 μg/g，平均237.19 μg/g，达到了风化壳型矿床最低工业品位。圈定了石宝、海风、庙林矿段3个铌（钽）矿找矿靶区，初步显示了较好的资源前景，有望成为风化-沉积型铌钽矿床的重要产出层，具有较大的勘查、评价及综合研究价值。 |
| 英文摘要: |
| The Guxu mining area in southern Sichuan is rich in coal resources， among which the middling coal type niobium （tantalum） polymetallic deposits exhibit good resource potential. By systematically collecting coal exploration data from the area and supplementing sampling， the contents of niobium （tantalum） polymetallic and major elements in the rocks of the C11 and C25 coal seam floor slabs of the Longtan Formation were analyzed. Summarized the enrichment characteristics and occurrence state of niobium （tantalum） polymetallic metals in the floor rocks of the Longtan Formation coal seam. The Nb and Ta contents in the C11 coal seam floor slab reach the minimum industrial grade of weathering crust deposits， with a （Nb， Ta）2O5 content ranging from 91.7 to 217.2 μg/g and an average of 162.78 μg/g. The （Nb， Ta）2O5 content in the C25 coal seam floor slab is between 16.2 and 613.6 μg/g， with an average of 237.19 μg/g， meeting the minimum industrial grade of weathering crust deposits. Three niobium （tantalum） ore prospecting target areas， namely Shibao， Haifeng， and Miaolin ore blocks， have been delineated， initially indicating good resource prospects. These areas are expected to become important layers of weathering-sedimentary niobium-tantalum deposits， possessing significant exploration， evaluation， and comprehensive research value. |
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