| 辽宁瓦房店和山东蒙阴金伯利岩中铬铁矿成分特征及指示意义 |
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| 引用本文： | 迟广成,李国武,肖刚,伍月,岳明新,郝原芳.辽宁瓦房店和山东蒙阴金伯利岩中铬铁矿成分特征及指示意义[J].地质与资源,2013,22(1):76-80. |
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| 作者姓名： | 迟广成 李国武 肖刚 伍月 岳明新 郝原芳 |
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| 作者单位： | 1. 沈阳地质矿产研究所, 辽宁 沈阳 110032;2. 中国地质大学, 北京 100083 |
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| 基金项目： | 国土资源部“金刚石矿床标型矿物的X射线衍射特征”项目(200811120)资助 |
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| 摘 要： | 为了研究瓦房店和蒙阴矿区铬铁矿成分与金伯利岩含矿性关系,对2个矿区的铬铁矿进行了系统的采样,利用电子探针波谱技术测定了不同品位含矿岩管金伯利岩中的100个铬铁矿微区化学成分.分析结果表明:不同世代的铬铁矿的化学成分不同,主要差别在铬和铝2个元素上.如果用Cr(/Cr+Al)=Cr′来表示铬铁矿与金伯利岩含矿性的关系,那么金刚石包裹体中铬铁矿的Cr′值为89.75%;富矿岩体中的第一世代铬铁矿Cr′值为89.47%;中等含矿岩体中第一世代铬铁矿Cr′值为86.83%,第二世代铬铁矿Cr′值为82.74%;贫矿的岩体中第三世代铬铁矿Cr′值为68.98%.金伯利岩岩体中含金刚石由富到贫,对应岩石中铬铁矿Cr′值依次变低,具有明显的找矿矿物学特征.
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| 关 键 词： | 金刚石矿区 金伯利岩 铬铁矿 化学成分特征 找矿意义 瓦房店 蒙阴 |
| 收稿时间： | 2012-08-16 |
COMPOSITION AND IMPLICATION OF THE CHROMITE IN KIMBERLITE FROM WAFANGDIAN, LIAONING AND MENGYIN, SHANDONG |
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| CHI Guang-cheng
,
LI Guo-wu
,
XIAO Gang
,
WU Yue
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YUE Ming-xin
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HAO Yuan-fang.COMPOSITION AND IMPLICATION OF THE CHROMITE IN KIMBERLITE FROM WAFANGDIAN, LIAONING AND MENGYIN, SHANDONG[J].Geology and Resources,2013,22(1):76-80. |
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| Authors: | CHI Guang-cheng LI Guo-wu XIAO Gang WU Yue YUE Ming-xin HAO Yuan-fang |
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| Institution: | 1. Shenyang Institute of Geology and Mineral Resources, Shenyang 110032, China;2. China University of Geosciences, Beijing 100087, China |
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| Abstract: | In order to research the relation between composition of chromite and ore content of kimberlite,samples were obtained from Wafangdian orefield in Liaoning and Mengyin orefield in Shandong for micro-area chemical composition analysis of chromite in kimberlite pipe by electronic probe spectrum.The result indicates that the chemical compositions of the chromite vary in different generations,particularly for chrome and aluminum.The value of Cr' = Cr(/ Cr+Al)is used to represent the relation between chromite and the ore-bearing potentiality of kimberlite.The Cr' values of chromite decrease with the increasing diamond contents in kimberlite,which is a significant guide for prospecting mineralogy. |
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| Keywords: | diamond orefield kimberlite chromite chemical composition prospecting significance Wanfandian of Liaoning Mengyin of Shandong |
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