| 湖北省宜昌市彭家河石榴石矿床地质特征及成因分析 |
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| 引用本文： | 晏久平.湖北省宜昌市彭家河石榴石矿床地质特征及成因分析[J].矿物岩石,2009,29(1). |
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| 作者姓名： | 晏久平 |
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| 作者单位： | 中国地质大学研究生院,湖北,武汉,430074;中南冶金地质研究所,湖北,宜昌,443003 |
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| 摘 要： | 运用矿物学、岩石学的方法对宜昌黄陵地区彭家河石榴石矿床中含矿层的矿物组合、化学成分、变质相及原岩特征进行分析与研究,结果表明彭家河石榴石矿床的含矿层位为水月寺群的周家河组,石榴石主要赋存于含(石墨)矽线石榴黑云斜长片麻岩及石榴黑云斜长片麻岩中,前者石榴石含量较高10%～50%,后者含量稍低12%～36%,X衍射及电子探针分析矿床中石榴石以铁铝榴石为主,其次是镁铝榴石,少量钙铝榴石.运用变质反应平衡温压方程计算出成矿温压条件为:P=600 MPa～800 MPa,T=650℃～750℃;变质相为高角闪岩相,高角闪岩相的富铁铝质沉积变质岩系--孔兹岩系是寻找此类石榴石矿床的重要找矿标志.
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| 关 键 词： | 彭家河 铁铝榴石 地质特征 成因分析 |
GEOLOGICAL CHARACTERISTICS AND GENETIC ANALYSIS OF GARNET ORE DEPOSIT OF PENGJIAHE,YICHANG,HUBEI PROVINCE |
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| YAN Jiu-ping.GEOLOGICAL CHARACTERISTICS AND GENETIC ANALYSIS OF GARNET ORE DEPOSIT OF PENGJIAHE,YICHANG,HUBEI PROVINCE[J].Journal of Mineralogy and Petrology,2009,29(1). |
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| Authors: | YAN Jiu-ping |
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| Institution: | YAN Jiu-ping1,21.College of Postgraduates,University of Geology of China,Wuhan 430074,China,2.Research Institute of Metallurgical Geology,Yichang 443003 |
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| Abstract: | The mineral assemblages,chemical compositions,metamorphic facies and characters of original rocks in the garnet ore deposit of Penjiahe,were studied and analyzed by means of mineralogy,petrology.It was showed that the sillimanite garnet plagioclase gneiss(10%~50% garnet) and garnet biotite plagioclase gneiss(12%~36% garnet) of the Shuiyeshi Group were the ore-bearing horizons.X-ray and microprobe analyses indicated that the garnets in the ore deposit belong to almandine with minor pyrope and essonite.Calcul... |
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| Keywords: | Pengjiahe almandine ore deposit geological character genetic analysis |
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