| 内蒙古黄岗梁铁锡矿床闪锌矿LA-ICP-MS微量元素组成及其指示意义 |
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| 引用本文： | 徐卓彬,邵拥军,杨自安,刘忠法,王文兴,任兴民.内蒙古黄岗梁铁锡矿床闪锌矿LA-ICP-MS微量元素组成及其指示意义[J].岩石矿物学杂志,2017,36(3):360-370. |
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| 作者姓名： | 徐卓彬 邵拥军 杨自安 刘忠法 王文兴 任兴民 |
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| 作者单位： | 中南大学 有色金属成矿预测与地质环境监测教育部重点实验室, 湖南 长沙 410083;中南大学 地球科学与信息物理学院, 湖南 长沙 410083;中南大学 有色金属成矿预测与地质环境监测教育部重点实验室, 湖南 长沙 410083;中南大学 地球科学与信息物理学院, 湖南 长沙 410083;中南大学 有色金属成矿预测与地质环境监测教育部重点实验室, 湖南 长沙 410083;中南大学 地球科学与信息物理学院, 湖南 长沙 410083;有色金属矿产地质调查中心, 北京 100012;中南大学 有色金属成矿预测与地质环境监测教育部重点实验室, 湖南 长沙 410083;中南大学 地球科学与信息物理学院, 湖南 长沙 410083;内蒙古黄岗矿业有限责任公司, 内蒙古 赤峰 025350;内蒙古黄岗矿业有限责任公司, 内蒙古 赤峰 025350 |
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| 基金项目： | 中南大学中央高校基本科研业务费专项资金资助（2016zzts442） |
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| 摘 要： | 黄岗梁铁锡矿床位于大兴安岭中南段晚古生代增生造山带。矿区内闪锌矿产于矽卡岩中,可分为浸染状和层纹状闪锌矿。本文对两种闪锌矿进行了高精度LA-ICP-MS元素含量测试,结果表明矿区两种闪锌矿具有相同成因特征,闪锌矿中Mn、Cu、As、In较富集,Ga、Ge、Cd含量较低,而As、Sn、Bi、Pb含量变化较大。Cu、Sn、Bi、Pb等元素在闪锌矿中以独立矿物赋存,Mn、Fe、Ga、Ge、Cd、In、Sb以类质同像形式赋存在闪锌矿晶格中。In/Ga、In/Ge比值较低,Zn/Cd比值为233~250,指示闪锌矿形成于中高温环境。Cd/Fe、Cd/Mn比值分别小于0.1和0.5,指示闪锌矿成因与岩浆活动有关,In Ge特征图解也指示其矽卡岩成因。通过与国内外典型矿床闪锌矿微量元素特征对比,结合矿床地质特征认为黄岗梁铁锡矿床中闪锌矿属于与燕山期岩浆作用有关的中高温矽卡型闪锌矿。
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| 关 键 词： | 闪锌矿 微量元素 LA-ICP-MS 黄岗梁铁锡矿床 |
| 收稿时间： | 2016/11/9 0:00:00 |
| 修稿时间： | 2017/4/5 0:00:00 |
LA-ICP-MS analysis of trace elements in sphalerite from the Huanggangliang Fe-Sn deposit, Inner Mongolia, and its implications |
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| XU Zhuo-bin,SHAO Yong-jun,YANG Zi-an,LIU Zhong-f,WANG Wen-xing and REN Xing-min.LA-ICP-MS analysis of trace elements in sphalerite from the Huanggangliang Fe-Sn deposit, Inner Mongolia, and its implications[J].Acta Petrologica Et Mineralogica,2017,36(3):360-370. |
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| Authors: | XU Zhuo-bin SHAO Yong-jun YANG Zi-an LIU Zhong-f WANG Wen-xing and REN Xing-min |
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| Institution: | Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitor(Central South University), Ministry of Education, Changsha 410083, China;School of Geoscience and InfoPhysics, Central South University, Changsha 410083, China;Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitor(Central South University), Ministry of Education, Changsha 410083, China;School of Geoscience and InfoPhysics, Central South University, Changsha 410083, China;Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitor(Central South University), Ministry of Education, Changsha 410083, China;School of Geoscience and InfoPhysics, Central South University, Changsha 410083, China;China Non-ferrous Metals Resource Geological Survey, Beijing 100012, China;Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitor(Central South University), Ministry of Education, Changsha 410083, China;School of Geoscience and InfoPhysics, Central South University, Changsha 410083, China;Inner Mongolia Huang Gang Mining Company Limited, Chifeng 025350, China;Inner Mongolia Huang Gang Mining Company Limited, Chifeng 025350, China |
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| Abstract: | The Huanggangliang Fe-Sn deposit is located in a late Paleozoic accretionary orogenic belt within the southern segment of the Da Hinggan Mountains. Two types of sphalerite occur in skarn, i.e., disseminated sphalerite and lamellar sphalerite. High-precision trace elements analysis was performed for the two types of sphalerite by LA-ICP-MS, and the results indicate that they are syngenetic. The sphalerite presents high concentrations of Mn, Cu, As and In, low concentrations of Ga, Ge and Cd, and wide-ranged concentrations of As, Sn, Bi and Pb. Cu, Sn, Bi and Pb occur as independent minerals, and Mn, Fe, Ga, Ge, Cd, In and Sb enter the lattice of sphalerite in the form of isomorphism. Low In/Ga and In/Ge ratios and Zn/Cd ratios from 233 to 250 suggest that the sphalerite was formed under a moderate-high temperature condition. Cd/Fe ratios below 0.1 and Cd/Mn ratios below 0.5 indicate that the formation of sphalerite was related to magmatism, and the In-Ge discrimination diagram of ore deposit genesis also suggests skarn type. According to comparing these results with other studies of sphalerite from typical ore deposits and in consideration of geological features of the deposit, the authors hold that the Huanggangliang Fe-Sn deposit is a moderate-high temperature skarn-type deposit related to the Yanshanian magmatism. |
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| Keywords: | sphalerite trace elements LA-ICP-MS Huanggangliang Fe-Sn deposit |
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