| 红柳沟北镁铁-超镁铁质岩体矿物学特征及矿石成因分析 |
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| 引用本文： | 周伟,姜常义,杜玮,宋艳芳,凌锦兰,夏明哲,王梦玺,赵彦锋.红柳沟北镁铁-超镁铁质岩体矿物学特征及矿石成因分析[J].岩石矿物学杂志,2014,33(4):671-680. |
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| 作者姓名： | 周伟 姜常义 杜玮 宋艳芳 凌锦兰 夏明哲 王梦玺 赵彦锋 |
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| 作者单位： | 长安大学地球科学与资源学院;西部矿产资源与地质工程教育部重点实验室;西北有色地质勘查局; |
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| 基金项目： | 国家自然科学基金项目(41302070,41102045);地质大调查项目(1212011121089);中央高校基本科研业务费(2013G1271100);青海省地质勘查基金项目(2012209) |
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| 摘 要： | 红柳沟北镁铁-超镁铁质岩体位于柴达木陆块北部的欧龙布鲁克微陆块东北缘,呈岩墙状,出露面积约0.1km~2,由方辉橄榄岩、橄榄二辉岩、含长单辉橄榄岩、橄榄辉长苏长岩、暗色橄榄辉长岩、苏长岩、辉长岩等组成,各岩相带在空间上呈渐变过渡关系。电子探针分析结果显示,岩体的主要造岩矿物为贵橄榄石、古铜辉石、普通辉石和斜长石,并且各矿物的结晶温度为1 307~1 122℃。岩体钛铁矿化明显,主要金属矿物为钛铁矿、钛磁铁矿和磁铁矿。利用橄榄石Fo最高值反演出原生岩浆MgO含量为8.49%,FeO含量为10.03%,TiO_2含量为1.63%,为普通玄武质岩浆。通过综合研究各矿物形成的温度和氧逸度条件,认为岩浆从橄榄石结晶到普通辉石结晶,其氧逸度是缓慢升高的,并且氧逸度是控制红柳沟北岩体Ti-Fe氧化物结晶的主要因素。
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| 关 键 词： | Ti-Fe氧化物 镁铁-超镁铁质岩体 红柳沟北 柴达木盆地北缘 |
| 收稿时间： | 2013/9/22 0:00:00 |
| 修稿时间： | 2014/4/15 0:00:00 |
Mineralogical characteristics and ore genesis of the Hongliugoubei mafic-ultramafic intrusion |
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| ZHOU Wei,JIANG Chang-yi,DU Wei,SONG Yan-fang,LING Jin-lan,XIA Ming-zhe,WANG Meng-xi and ZHAO Yan-feng.Mineralogical characteristics and ore genesis of the Hongliugoubei mafic-ultramafic intrusion[J].Acta Petrologica Et Mineralogica,2014,33(4):671-680. |
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| Authors: | ZHOU Wei JIANG Chang-yi DU Wei SONG Yan-fang LING Jin-lan XIA Ming-zhe WANG Meng-xi and ZHAO Yan-feng |
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| Institution: | College of Earth Science and Recourses, Chang''an University, Xi''an 710054, China;Key Laboratory of Western China''s Mineral Resources and Geological Engineering, Ministry of Education, Xi''an 710054, China;College of Earth Science and Recourses, Chang''an University, Xi''an 710054, China;Key Laboratory of Western China''s Mineral Resources and Geological Engineering, Ministry of Education, Xi''an 710054, China;College of Earth Science and Recourses, Chang''an University, Xi''an 710054, China;Key Laboratory of Western China''s Mineral Resources and Geological Engineering, Ministry of Education, Xi''an 710054, China;College of Earth Science and Recourses, Chang''an University, Xi''an 710054, China;Key Laboratory of Western China''s Mineral Resources and Geological Engineering, Ministry of Education, Xi''an 710054, China;College of Earth Science and Recourses, Chang''an University, Xi''an 710054, China;Key Laboratory of Western China''s Mineral Resources and Geological Engineering, Ministry of Education, Xi''an 710054, China;College of Earth Science and Recourses, Chang''an University, Xi''an 710054, China;Key Laboratory of Western China''s Mineral Resources and Geological Engineering, Ministry of Education, Xi''an 710054, China;College of Earth Science and Recourses, Chang''an University, Xi''an 710054, China;Key Laboratory of Western China''s Mineral Resources and Geological Engineering, Ministry of Education, Xi''an 710054, China;Bureau of Geological Exploration for Non-ferrous Metals in Northwest China, Xi''an 710054, China |
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| Abstract: | |
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| Keywords: | Ti-Fe oxide mafic-ultramafic intrusion Hongliugoubei northern Qaidam Basin |
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