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| 滇西北香格里拉地区钨矿成矿规律及找矿方向 |
| 董涛,杜斌,段召艳,曹晓民,宋旭峰,董红国,张有名,李冰 |
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(1. 云南省地质调查院, 云南 昆明 650216;
2. 自然资源部三江成矿作用及资源勘查利用重点实验室, 云南 昆明 650051) |
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| 摘要: |
| 滇西北香格里拉地区已成为我国重要的铜钼资源勘查开发基地，区内的燕山期岩浆岩带呈南北向纵跨义敦岛弧、甘孜-理塘结合带及扬子西缘坳陷带，并伴随着钨钼多金属矿化，形成了休瓦促、麻花坪等大中型钨多金属矿床。区内的钨矿床与花岗岩有直接成因和空间联系，具有剩余重力低异常、弱正磁异常、钨锡钼铋组合异常及钨锡自然重砂异常特征。本文通过休瓦促、麻花坪典型矿床分析，总结钨矿时空规律、控矿因素及成矿模式，结合区域重力、航磁、化探、重砂等异常，综合分析该区具有寻找石英脉型、矽卡岩型、岩浆热液型钨多金属矿的找矿潜力，并探讨了钨矿找矿方向。 |
| 关键词: 找矿方向 成矿规律 钨矿床 香格里拉 滇西北 |
| DOI：10.19826/j.cnki.1009-3850.2022.01002 |
| 附件 |
| 投稿时间：2021-09-03修订日期：2021-12-18 |
| 基金项目:本文受国家自然科学重点基金项目(92055314)、云南省自然资源厅项目(4530000HT201902580)和四川省科技计划项目应用基础研究面上项目(2018JY0175)联合资助 |
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| Metallogenic regularity and prospecting direction of tungsten deposits in Shangri-La area,NW Yunnan Province,China |
| DONG Tao, DU Bin, DUAN Zhaoyan, CAO Xiaomin, SONG Xufeng, DONG Hongguo, ZHANG Youming, LI Bing |
(1. Yunnan Institute of Geological Survey, Kunming 650216, China;
2. Key Laboratory of Sanjiang Metallogeny and Resources Exploration and Utilization, MNR, Kunming 650051, China) |
| Abstract: |
| The Shangri-La area, NW Yunnan province, has become an important Cu-Mo exploration and development base in China. The Yanshanian intrusions longitudinally cross the Yidun terrane, Gantze-Litang suture zone, and western margin of the Yangtze Block from north to south, accompanied by W-Mo polymetallic mineralization in the region. Several large-/medium-sized tungsten deposits are discovered in this belt, e.g., the Xiuwacu and Mahuaping deposits. The tungsten metallogenesis is genetically-spatially related to the coeval granitoids, and the deposits are characterized by low residual gravity anomaly, week positive magnetic anomaly, W-Sn-Mo-Bi anomaly association, and W-Sn natural placer abnormal. Basing on the systematic studies of the typical Xiuwacu and Mahuaping deposits, this study aims to comprehensively analyse the potential quartz-vein type, skarn type, hydrothermal type tungsten polymetallic deposits by means of anomalies of regional gravity, aeromagnetism, geochemistry and placer.The prospecting direction of tungsten in the region is discussed. |
| Key words: exploration direction metallogenic law tungsten deposits shangri-La NW Yunnan |