The genesis of the Zhaoanzhuang Fe oxide deposit in Wuyang region of Henan Province: Insights from magnetite and apatite

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院矿产资源研究重点实验室

	The genesis of the Zhaoanzhuang Fe oxide deposit in Wuyang region of Henan Province: Insights from magnetite and apatite
	Lan CaiYun 1,2; Zhao TaiPing 1; Luo ZhengZhuan 3; Wang ChangLe 4; Wen QiFu 5; Liu LiXin 3
刊名	ACTA PETROLOGICA SINICA
	2015-06-01
卷号	31 期号:6 页码:1653-1670
关键词	Wuyang iron deposit Zhaoanzhuang iron deposit Magnetite Apatite Ultrabasic rock Early Precambrian North China Craton
文献子类	Article
英文摘要	As a part of the Wuyang iron deposit, the Zhaoanzhuang Fe oxide deposit is located at the southern margin of the North China Craton and occurs in ultramafic rocks which intruded into the Zhaoanzhuang Formation of the Early Paleoproterozoic Taihua Group. The deposit is closely related to the ultramafic rocks both spatially and temporally, and they have similar mineral assemblages, suggesting similar origin. The ores have classic sideronitic texture. Magnetites from both the ores and rocks are characterized by high V (1458 x 10(-6) similar to 2524 x 10(-6)), Mg (2502 x 10(-6) similar to 4674 x 10(-6)) and low Ti (395 x 10(-6) similar to 3186 x 10(-6)), Cr (3.30 x 10(-6) similar to 66.1 x 10(-6)), Ni (93.0 x 10(-6) similar to 176 x 10(-6)), Mn (259 x 10(-6) similar to 937 x 10(-6)) contents. Apatites from both the ores and ultramafic rocks are present as equigranular coarse grains, occurring interstitially between magnetite grains. They have high Sigma REE (4983 x 10(-6) similar to 7038 x 10(-6)) and F (2.69% similar to 3.52%) contents as well as high F/C1 (21.5 similar to 78.8) and LREE/HREE ratios ((La/Yb)(N) = 28 similar to 45) without Ce depletion. It is indicated that magnetite and apatite crystallized in magma with hydrothermal overprinting. Furthermore, the trace elemental contents of the parental magma calculated using the compositions of apatite indicate that the magma underwent crustal contamination. And the olivine of Zhaoanzhuang ultramafic rock is high Mg and low Cr and Ni, indicating olivine crystallized in volatile-rich melts. In addition, a lot of carbonate minerals in ores also show the addition of CO2 from the wall rock into the magma, which increased oxygen fugacity of the magma and enhanced the crystallization of magnetite instead of ilmenite. Therefore, the formation of low-Ti magnetite could be due to both high oxygen fugacity and low-Ti magma source. And the Zhaoanzhuang Fe oxide deposit, classified into magma ores, are genetically related to the ultramafic rocks. The parental magma was contaminated with CO2-rich fluid.
WOS关键词	RARE-EARTH ELEMENTS ; LA-ICP-MS ; TRACE-ELEMENTS ; IRON DEPOSIT ; KIRUNA-TYPE ; ORE ; CHINA ; COMPLEX ; MAGMA ; ROCK
WOS研究方向	Geology
语种	英语
WOS记录号	WOS:000357547700012
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/62348]
专题	地质与地球物理研究所_中国科学院矿产资源研究重点实验室
作者单位	1.Chinese Acad Sci, Key Lab Mineral & Metallogeny, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.4 Geol Brigade Henan Nonferrous Geol Mineral Reso, Zhengzhou 450016, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 5.Henan Angang Grp Wuyang Min Co Ltd, Wugang 462500, Peoples R China
推荐引用方式 GB/T 7714	Lan CaiYun,Zhao TaiPing,Luo ZhengZhuan,et al. The genesis of the Zhaoanzhuang Fe oxide deposit in Wuyang region of Henan Province: Insights from magnetite and apatite[J]. ACTA PETROLOGICA SINICA,2015,31(6):1653-1670.
APA	Lan CaiYun,Zhao TaiPing,Luo ZhengZhuan,Wang ChangLe,Wen QiFu,&Liu LiXin.(2015).The genesis of the Zhaoanzhuang Fe oxide deposit in Wuyang region of Henan Province: Insights from magnetite and apatite.ACTA PETROLOGICA SINICA,31(6),1653-1670.
MLA	Lan CaiYun,et al."The genesis of the Zhaoanzhuang Fe oxide deposit in Wuyang region of Henan Province: Insights from magnetite and apatite".ACTA PETROLOGICA SINICA 31.6(2015):1653-1670.