| 石珊珊,周洪瑞.云南曲靖地区下寒武统黑色岩系钼镍多金属矿成因研究[J].矿产勘查,2025,16(S1):56-66 |
| 云南曲靖地区下寒武统黑色岩系钼镍多金属矿成因研究 |
| Study on the genesis of the Molybdenum-Nickel Polymetallic deposits in the Lower Cambrian black rock series in Qujing Area，Yunnan Province |
| 投稿时间：2024-12-28 |
| DOI：10.20008/j.kckc.2025S1007 |
| 中文关键词: 下寒武统 筇竹寺组 黑色岩系 热水沉积构造 热水喷流作用 |
| 英文关键词: Lower Cambrian Qiongzhusi Formation black rock series the structure formed by hydrothermal sedimentation hot water jet flow action |
| 基金项目:本文受自然资源部部门预算项目“自然资源科普与重大科技成果宣传”(1021211191130000009001)资助。 |
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| 中文摘要: |
| 扬子克拉通东南缘的下寒武统筇竹寺组黑色岩系富含稀土元素、微量元素和铂族元素，一直是地质学家们的研究焦点。本文主要研究了云南省曲靖地区黑色岩系中的钼镍多金属矿，并对其进行了地层学、沉积学和地球化学的深入分析。在研究区域内，笔者发现了两层钼镍矿层，这些矿层都位于下寒武统筇竹寺组石岩头段的黑色岩系中，并且钼镍多金属矿层的分布相当稳定。在矿层及其周边的沉积岩中，可以观察到透镜状、网脉状、条带状、结核状的构造以及和同沉积变形构造的形成，这些构造明显地富集亲硫元素和亲石元素，明显亏损高场强元素及大离子亲石元素。综合研究结果显示，钼镍多金属矿的形成受到持续的热液活动的影响。 |
| 英文摘要: |
| Situated on the Yangtze Platform′s southern edge in southern China，the Lower Cambrian Qiongzhusi Formation′s black rock series is abundant in a range of rare earth elements，trace elements，and platinum group elements. Geologists have consistently focused their research on the Mo-Ni polymetallic deposits.The study centers on examining the polymetallic deposits of molybdenum nickel in Qujing′s black rock series，Yun. nan Province，with a focus on sedimentology，geochemistry，and extensive stratigraphy. The two layers of Mo-Ni deposits discovered in the study area are both located within the black rock series of Qiongzhusi Formation in the Lower Cambrian，and the distribution of molybdenum nickel polymetallic deposits is stable. In the series of black rocks，the formation of hydrothermal sediments encompasses a variety of structures such as network veins，bands， lenticles，nodules，and those associated with syndepositional deformation. The rock is significantly enriched in sulfur and lithophile elements，while significantly deficient in high field strength elements and large ion lithophileelements. The comprehensive research results show that the formation of molybdenum nickel polymetallic depositsis influenced by sustained hydrothermal activity. |
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