| 清镇陨石（EH3）硫镁矿微量元素化学特征 |
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| 引用本文： | 陈永亨 佩里卡,E.清镇陨石（EH3）硫镁矿微量元素化学特征[J].矿物学报,1993,13(3):197-203. |
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| 作者姓名： | 陈永亨 佩里卡 E |
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| 作者单位： | 中国科学院地球化学研究所广州分部，中国科学院地球化学研究所广州分部，德国马普核物理研究所 广州 519640，广州 519640，海德堡 |
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| 摘 要： | 本文应用电子探针和中子活化分析方法详细研究了清镇陨石(EH 3)中硫镁矿的化学组成和微量元素分布、硫镁矿携带了部分HREE、高度富集钪等难熔亲石元素,论证了该矿物的高温成因,REE丰度可能与陨硫钙石互补。该矿物含有钠-硒组分,可能是顽火辉石陨石独有的组分。铬归一化的钠-钴(原子比)相关关系具有CI一致的趋势,表明其母体来自太阳组成的气体星云。
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| 关 键 词： | 陨石 硫化物 矿物 微量元素 |
TRACE ELEMENT CHEMISTRY OF NINNGERITE IN THE QINGZHEN CHONDRITE(EH3) |
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| Chen Yongheng,Wang Daode,Ernst Pernicka Institute of Geochemistry.TRACE ELEMENT CHEMISTRY OF NINNGERITE IN THE QINGZHEN CHONDRITE(EH3)[J].Acta Mineralogica Sinica,1993,13(3):197-203. |
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| Authors: | Chen Yongheng Wang Daode Ernst Pernicka Institute of Geochemistry |
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| Institution: | Guangzhou Branch |
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| Abstract: | The composition and trace element abundance of niningerite in the Qing-zhen chondrite (EH3) have been determined by means of electron microprobeand INAA. The niningerite contains some HREE and is highly rich in refract-ory lithophile elements sueh as Sc,etc., confirming its high-temperature or-igin. It seems that the REE abundance pattern in the niningerite is comple-mentary with oldhamite in the Qingzhen chondrite. In the niningerite theNa/Cr and Se/Cr ratios are well correlated probably because these elementswere present in the same nebular component unique of enstatite meteorites, andthe Cr-normalized Na-Co (atom ratio) correlation is consistent with CI cho-ndrites, suggesting that the parent bodies of enstatite chondrites were formedin the gas nebulae of solar composition. |
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| Keywords: | Qingzhen enstatite chondrite sulfide mineral trace element abundance solar nebular evolution |
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