| 东秦岭地区钼矿床中辉钼矿的铼含量及多型特征 |
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| 引用本文： | 黄典豪.东秦岭地区钼矿床中辉钼矿的铼含量及多型特征[J].岩石矿物学杂志,1992,11(1):74-83. |
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| 作者姓名： | 黄典豪 |
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| 作者单位： | 中国地质科学院矿床地质研究所 北京 |
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| 摘 要： | 辉钼矿是铼的最主要载体矿物。研究表明,东秦岭地区不同类型钼矿床中,辉钼矿的Re平均含量多为10—20ppm,其中仅黄龙铺碳酸岩脉型钼(铅)矿床的辉钼矿平均含Re高达152.5ppm。尽管辉钼矿中的铼含量有变化,但均呈类质同象取代钼而存在。同时,这些矿床辉钼矿的铼含量差异,主要取决于成矿热流体中原始铼含量。辉钼矿多型有2H型和2H+3R混合型。铼含量和成矿温度对辉钼矿多型没有影响,故辉钼矿多型对于钼矿床类型没有标型意义。
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| 关 键 词： | 钼矿 矿床 辉钼矿 铼 含量 |
Rhenium Content and Polytype Characteristics of Molybdenite from Molybdenum Deposits in East Qinling |
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| Huang Dianhao Institute of Mineral Deposits,Chinese Academy of Geological Sciences,Beiging.Rhenium Content and Polytype Characteristics of Molybdenite from Molybdenum Deposits in East Qinling[J].Acta Petrologica Et Mineralogica,1992,11(1):74-83. |
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| Authors: | Huang Dianhao Institute of Mineral Deposits Chinese Academy of Geological Sciences Beiging |
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| Institution: | Huang Dianhao Institute of Mineral Deposits,Chinese Academy of Geological Sciences,Beiging 100037 |
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| Abstract: | East Qinling is a major molybdenum metallogenic belt on the southernmargin of the North China platform and contains Jinduicheng and Shijiawanporphyry type molybdenum deposits and Huanglongpu carbonate type mo-lybdellilm (lead) deposit in Shanxi Province as well as Nannihu--Sandaozhu-ang and Shangfanggou porphyry-skarn type molybdenum (tungsten) and mo-lybdenum(iron) deposits in Henan Province. Studies show that rhenium inmolybdenite from the Huanglongpu molybdendm (lead) deposit has values ofcomprehensive utilization: the average Re content is 152.5 ppm, 14 timesand 7 times higher than Re content of molybdenite from the porphyty typemolybdenum deposit and from the porphyry-skarn type molybdenum (tung-sten) deposit respectively (See Table 1). Nevertheless, as 187~Re is unstableand frequently converts into 187~Os, molybdenite as the maJor carrier of Recommonly contains different quantities of Os(See Table 1). Re and Os main-ly occur in the form of isomorphism in molybdenite. As for polytypes, it is determined that molybdenite from different types of molybdenum in thisregion is exclusively of 2H type and 2H+3R type (See Fig. 4 and Table2), with no relationship existent betWeen the polytype variety and the Recontent or ore-forming temperature (See Table 2). It is therefore concludedthat the difference in rhenium content of molybdenite from these molybde-num deposits depends mainly on geneses of these molybdenum deposits andinitial rhenium concentrations of ore-forming hydrothermal fluids, whereaspolytypes of molybdenite have no typomorphic significance for these typesof molybdennm deposits. |
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| Keywords: | Molybdenite rhenium content polytype characteristics east Qinling |
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