| 刘小锋,杨志勇,杨爱平,李浩宇,杨星宇.甘肃北山红柳沟北钒矿下寒武统双鹰山组黑色岩系地质地球化学特征及成矿意义[J].矿产勘查,2026,17(6):1036-1049 |
| 甘肃北山红柳沟北钒矿下寒武统双鹰山组黑色岩系地质地球化学特征及成矿意义 |
| Geological and geochemical characteristics and metallogenic significance of the lower Cambrian Shuangyingshan Formation in the north of Hong-liugou, Beishan, Gansu Province |
| 投稿时间：2025-01-23 |
| DOI：10.20008/j.kckc.202606009 |
| 中文关键词: 红柳沟北钒矿 主微量元素 稀土元素 矿床成因 氧化还原环境 |
| 英文关键词: Hongliugou north vanadium mine major and trace element REE ore genesis redox environment |
| 基金项目:本文受甘肃省敦煌市红柳沟北钒多金属矿普查省地勘基金项目(201904-D03、202002-D03、2021-D07)资助。 |
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| 中文摘要: |
| 红柳沟北钒矿床地处中亚造山带南缘，矿体主要赋存在下寒武统双鹰山组黑色岩系中，为甘肃北山地区典型的钒矿床之一。本文对双鹰山组黑色岩系和钒矿石开展了岩石地球化学分析，探讨了双鹰山组黑色岩系的沉积构造背景、沉积环境、沉积物质来源，分析了钒矿成因。研究认为双鹰山组黑色岩系 SiO2与 Zr呈明显正相关关系、低 n(Si)/n(Si+Al+Fe)值和高 n(Al)/n(Al+Fe+Mn)值指示成岩物质主要来自陆源碎屑，高 Ba/Sr值和 Eu正异常显示成岩过程中受到热水作用影响。低 MnO/TiO2值与 LaN/CeN-Al2O3/(Al2O3+较Fe2O3)、Fe2O3/TiO2-Al2O3/(Al2O3+Fe2O3)和 Fe2O3/(100-SiO2)-Al2O3/(100-SiO2)指示黑色岩系形成于大陆边缘附近。SiO2-Al2O3与 lg(Fe/Ti)-Al/(Al+Fe+Mn)指示黑色岩系为海相沉积。高 V/(V+Ni)、Ni/Co、V/Cr值和 δCe负异常反映当时沉积环境为缺氧还原环境。综合研究认为，红柳沟北钒矿床是受到热水作用影响的沉积变质型钒矿床。 |
| 英文摘要: |
| The Hongliugou north vanadium deposit is located in the southern margin of the Central Asian oro-genic belt. The ore body is mainly hosted in the black rock series of the Lower Cambrian Shuangyingshan Forma-tion. It is one of the typical vanadium deposits in the Beishan area of Gansu Province. In this paper, the geochemicalanalysis of black rock series and vanadium ore in Shuangyingshan Formation is carried out. The sedimentary tec-tonic background, sedimentary environment and sedimentary material source of black rock series in Shuangying-shan Formation are discussed, and the genesis of vanadium ore is analyzed. The study shows that the SiO2 and Zr of the black rock series of Shuangyingshan Formation have a significant positive correlation. The low n(Si)/n(Si+Al+Fe) value and high n(Al)/n(Al+Fe+Mn) value indicate that the diagenetic material is mainly derived from terrigenousdebris. The high Ba/Sr value and Eu positive anomaly indicate that the diagenesis process is affected by hot water.The low MnO/TiO2 values and LaN/CeN-Al2O3/(Al2O3+Fe2O3), Fe2O3/TiO2-Al2O3/(Al2O3+Fe2O3) and Fe2O3/(100-SiO2)-Al2O3/(100-SiO2) indicate that the black rock series were formed near the continental margin. SiO2-Al2O3 and lg(Fe/Ti)-Al/(Al+Fe+Mn) indicate that the black rock series are marine deposits. The high V/(V+Ni), Ni/Co, V/Crvalues and negative δCe anomalies reflect that the sedimentary environment was an aNOxic and reducing environ-ment. Comprehensive research suggests that the Hongliugou north vanadium deposit is a sedimentary metamorphicvanadium deposit affected by hot water. |
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