| 鄂东北地区沉积变质型锰矿矿物学特征和地球化学特征 |
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| 引用本文： | 吴飞,尤静静,徐学金,蒋之飞,陈松,邹院兵,屠江海,刘锐,方洁.鄂东北地区沉积变质型锰矿矿物学特征和地球化学特征[J].地质找矿论丛,2021,36(3):247-256. |
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| 作者姓名： | 吴飞 尤静静 徐学金 蒋之飞 陈松 邹院兵 屠江海 刘锐 方洁 |
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| 作者单位： | 湖北省自然资源厅地质勘查基金管理中心,武汉430071;湖北省地质局第六地质大队,湖北孝感432000;中国地质大学(武汉)资源学院,武汉430074 |
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| 基金项目： | 湖北省地质勘查基金项目"湖北省孝昌县四方山-黄陂区团山沟矿区锰矿预查"（编号：[2018]31）、湖北省地质局科研项目（编号：KJ2018-6）联合资助。 |
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| 摘 要： | 扬子陆块北缘的鄂东北地区是湖北省沉积变质型锰矿集中区,发育了广水—黄陂—蕲春SEE-NWW向元古代沉积变质锰矿带,锰矿赋存于新元古界红安岩群中。本文以鹰咀山锰矿床、四方山锰矿床及孙冲锰矿床为例,分析研究其矿物学特征和地球化学特征,以便为总结该区锰矿床成矿环境及成矿物质来源提供帮助。研究表明,锰矿石矿物主要为菱锰矿、软锰矿、硬锰矿、黑锰矿、锰铝榴石等;矿石化学组分多样,Co、Ni、Zn、Sr、Ba、U等元素相对富集。锰矿石的w(Th)/w(U)、w(V)/w(Cr)值反映锰矿形成于弱氧化-还原的沉积环境;w(SiO2)/w(Al2O3)、w(Fe+Mn)/w(Ti)、w(Fe)/w(Ti)、w(Al)/w(Fe+Mn+Al)、w(Y)/w(Ho)、w(La)/w(Ce)特征值,以及w(SiO2)—w(Al2O3)图解、w(Fe)/w(Ti)—w(Al)/w(Fe+Mn+Al)图解,均反映其成矿过程中有热水物质参与。因此,鄂东北地区的沉积变质型锰矿形成于弱氧化-还原性沉积环境,有热水(液)活动参与成矿作用并提供了丰富的物质来源。
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| 关 键 词： | 沉积变质型锰矿 矿物学特征 地球化学特征 沉积环境 鄂东北 |
| 收稿时间： | 2020/11/17 0:00:00 |
| 修稿时间： | 2021/5/21 0:00:00 |
Mineral and geochemical characteristics of sedimentary metamorphic Mn deposits in the northeast Hubei province |
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| WU Fei,YOU Jingjing,XU Xuejin,JIANG Zhifei,CHEN Song,ZOU Yuanbing,TU Jianghai,LIU Rui,FANG Jie.Mineral and geochemical characteristics of sedimentary metamorphic Mn deposits in the northeast Hubei province[J].Contributions to Geology and Mineral Resources Research,2021,36(3):247-256. |
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| Authors: | WU Fei YOU Jingjing XU Xuejin JIANG Zhifei CHEN Song ZOU Yuanbing TU Jianghai LIU Rui FANG Jie |
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| Institution: | Geological Exploration Fund Management Center, Department of Natural Resources of Hubei Province, Wuhan 430071, China;The Sixth Geological Brigade of Hubei Geological Bureau, Xiaogan 432000, Hubei, China;Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China |
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| Abstract: | The Northeast Hubei province at the North margin of the Yangtze block is the sedimentary metamorphic Mn deposit-clustered area in Hubei province. Guangshui-Huangpi-Qichun Proterozoic sedimentary metamorphic Mn ore belt trending SEE-NEW is developed here. The Mn deposit occurs in the Neoproterozoic Hongan group. The paper deals with mineralogy and geochemistry of Yingzuishan, Sifangshan, Sunchong Mn deposits. Rhodochrosite, pyrolusite, psilomelane, hausmannite and partchinite are the main ore minerals. The ore is complicate in chemical composition with relative Co, Ni, Zn, Sr, Ba, etc enrichment. w(Th)/w(U), w(V)/w(Cr) ratios show weak oxidation-reduction sedimentary environment; w(SiO2)/w(Al2O3), w(Fe+Mn)/w(Ti), w(Fe)/w(Ti), w(Al)/w(Fe+Mn+Al), w(Y)/w(Ho), w(La)/w(Ce), the characteristic value and w(SiO2)-w(Al2O3), w(Fe/Ti)-w(Al)/w(Fe+Mn+Al) plot, incorporation of hot water during the ore-forming process of the Mn deposits in the area and the hot water provides abundant ore materials. |
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| Keywords: | sedimentary metamorphic Mn deposit mineralogical characteristics geochemical characteristics sedimentary environment northeast Hubei province |
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