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个旧花岗岩体北缘铟成矿带发现及其意义
The discovery and significance of the indium metallogenic belt in the northern margin of Gejiu granite
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| DOI | 10.20086/j.cnki.yskw.2025.4056 |
| 刊名 |
Acta Petrologica et Mineralogica
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| 年，卷(期) | 2025, 44(3) |
| 作者 |
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| 作者单位 |
1. 昆明理工大学国土资源与工程学院, 云南 昆明 650093; |
| 摘要 |
稀散元素铟(In)属于关键金属,是新兴产业技术和国防安全领域的重要原料。我国是铟资源大国,滇东南地区是我国最重要的铟资源基地。本文对云南个旧花岗岩体北缘普雄铅锌成矿带中的挣财洞和老鹰窝等典型矿床开展了铟分布规律和赋存形式研究,闪锌矿LA-ICP-MS原位微量元素测试结果表明,挣财洞矿床闪锌矿中铟的含量在37.71×10-6~403.88×10-6之间,均值为157.44×10-6,老鹰窝铅锌矿床的闪锌矿中铟含量在378.58×10-6~1 060.08×10-6之间,均值为631.46×10-6,与国内典型富铟矿床闪锌矿中铟的含量属于一个数量级,明显高于国外典型富铟矿床。此外,普雄铅锌成矿带内还分布众多其他铅锌矿床(点),而闪锌矿又是铟的重要载体矿物,据此本文认为该铅锌成矿带也是重要的铟成矿带,有重要的研究和利用价值。
|
| Abstract |
Indium (In), a crucial metal, serves as a significant raw material in the domains of emerging industrial technologies as well as national defense and security. China is one of the most important countries of indium resources in the world, and southeast Yunnan plays the same role in our country. In this paper, the distribution and occurrence of indium in typical deposits such as Zhengcaidong and Laoyingwo in the Puxiong Pb-Zn metallogenic belt at the northern margin of Gejiu granite in Yunnan Province have been studied. LA-ICP-MS in situ trace element test of sphalerite shows that the indium content of sphalerite in Zhenngcaidong deposit ranges from 37.71×10-6 to 403.88×10-6, with an average of 157.44×10-6. The indium content of sphalerite in Laoyingwo Pb-Zn deposit ranges from 378.58×10-6 to 1 060.08×10-6, with an average of 631.46×10-6. The indium content in sphalerite is an order of magnitude higher than that in indium-rich deposits abroad. In addition, many Pb-Zn deposits (occurrences) occur in the Puxiong Pb-Zn metallogenic belt, and sphalerite is the dominate indium-bearing mineral in this region. Therefore, we suggest that the Puxiong Pb-Zn metallogenic belt is also an important indium metallogenic belt, which has important research and utilization values.
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| 关键词 |
滇东南普雄地区；铅锌矿成矿带；个旧花岗岩体北缘；铟；超常富集
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| KeyWord |
Puxiong district in southeast Yunnan Province; Pb-Zn ore metallogenic belt; north margin of Gejiu granite; indium; supernormal enrichment
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| 基金项目 | |
| 页码 | 737-744 |
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