| 安庐石英正长岩带的黑云母及其岩石学意义 |
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| 引用本文： | 翟建平.安庐石英正长岩带的黑云母及其岩石学意义[J].南京大学学报(自然科学版),1987(1). |
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| 作者姓名： | 翟建平 |
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| 作者单位： | 南京大学地质系 |
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| 摘 要： | 安庆庐江地区发育一条石英正长岩带,包括黄梅尖岩体,大龙山岩体和城山岩体,通过对岩带的黑云母详细研究,查明岩带的初始成岩物质来源较深,岩带形成时岩浆相对贫水,而氧逸度却较高。由于岩带侵位地质环境的差异等因素,导致岩带不同部位的岩浆演化趋势不同。其中黄梅尖岩体残余岩浆贫铁,有利于W、Sn,Nb、Ta矿化,而大龙山岩体残余岩浆富铁,有利于铁矿化。
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| 关 键 词： | 石英正长岩带 黑云母 初始岩岩物质 氧逸度 水逸度 岩浆演化趋势 W、Sn、Nb、Ta矿化 Fe矿化 |
THE CHARACTERISTICS OF THE BIOTITE OF ANLU QUARTZ-SYENITE BELT AND THEIR PETROLOGICAL SIGNIFICANCE |
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| Zhai Jianping.THE CHARACTERISTICS OF THE BIOTITE OF ANLU QUARTZ-SYENITE BELT AND THEIR PETROLOGICAL SIGNIFICANCE[J].Journal of Nanjing University: Nat Sci Ed,1987(1). |
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| Authors: | Zhai Jianping |
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| Institution: | Department of Geology |
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| Abstract: | The quartz-syenite belt, extending from the city of Anqin to Lujiang county in Anhui province, includes Huangmeijian, Chengshan and Dalongshan igneous bodies, By detailed research on its biotite, it has been concluded that the initial magma substance came from the depth, and the belt formed becau se of the lack of water and higher fO_2, The trends of magma evolution in the parts of the belt are different, as a result of differences among emplacement environments, The poor content of Fe in residual magma of Huagmeijian body favored mineralization of W, Sn, Nb and Ta; the rich content in Fe in resi dual magma of Dalongshan favored Fe mineralization. |
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| Keywords: | The quartz-syenite belt Biotite Initial magma substance fO_2 fH_2O The trends of magma ovolution Mineralization of W Sn Nb and Ta: Fe mineralization |
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