| 南秦岭千家坪钒矿床地质地球化学特征与钒的富集规律 |
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| 引用本文： | 朱红周,侯俊富,王淑利.南秦岭千家坪钒矿床地质地球化学特征与钒的富集规律[J].中国地质,2010,37(5):1490-1500. |
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| 作者姓名： | 朱红周 侯俊富 王淑利 |
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| 作者单位： | 西北有色地质研究院;西北大学; |
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| 基金项目： | 西北有色地勘局重点勘查项目，科研项目 |
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| 摘 要： | 千家坪钒矿床产于南秦岭下寒武统水沟口组(缀1sh)黑色岩系中,该黑色岩系由黑色含炭硅质岩、含炭硅质岩夹泥岩和泥岩等组成。钒矿体呈层状产出,矿石以黑色硅质岩夹泥岩型为主,含钒矿物主要为钒云母。黑色岩系岩石主要成分为SiO2、Al2O3、K2O等,富集TFe、Ba、Zn、P、Cu、Ni、Cr、Sr、Zr、Ag、Ti、Mn、V等多种元素。黑色岩系n(V)/n(Cr)=5.92～30.64、n(V)/n(V+Ni)=0.88～0.99、δU1,判断其为缺氧沉积环境。黑色硅质岩n(SiO2)/n(Al2O3)=238.81,U/Th1以及δ30Si=-0.1‰～0.5‰、δ18O=20.2‰～25.8‰,判断其为半深海滞留沉积盆地热水沉积成因。泥岩n(SiO2)/n(Al2O3)=5.69,n(Al)/n(Al+Fe+Mn)=0.63,n(Si)/n(Si+Al+Fe)=0.74～0.76判断其物源为陆源,但受到热水作用影响。钒矿化受下寒武世古隆起边缘断陷滞留盆地中形成的黑色岩系层位所控制。钒明显趋向在炭硅质岩所夹的泥岩或硅质岩附近的泥岩中富集,在炭硅质岩夹泥岩段向泥岩段过渡层位,常常含结核,钒元素含量达到峰值,其他Cu、Pb、Zn、As、W、Mo等元素富集规律与V元素基本一致。该矿床成矿物质主要来源于深部热水,泥岩的吸附作用对钒的富集具有重要作用。综合地质、地球化学特征,认为该矿床为热水喷流沉积成因。
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| 关 键 词： | 千家坪钒矿 黑色岩系 热水沉积 富集规律 |
Geological and geochemical characteristics and vanadium enrichment regularity of the Qianjiaping vanadium deposit in southern Qinling Mountain |
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| ZHU Hong-zhou,HOU Jun-fu,WANG Shu-li.Geological and geochemical characteristics and vanadium enrichment regularity of the Qianjiaping vanadium deposit in southern Qinling Mountain[J].Chinese Geology,2010,37(5):1490-1500. |
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| Authors: | ZHU Hong-zhou HOU Jun-fu WANG Shu-li |
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| Institution: | ZHU Hong-zhou1,HOU Jun-fu2,WANG Shu-li1(1.Northwest Nonferrous Geological Research Institute,Xi'an 710054,Shaanxi,China,2.Nothwest University,Xi'an 710068,China) |
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| Abstract: | The Qianjiaping vanadium deposit occurs in the black rock series of lower Cambrian Shuigoukou Formation in southern Qinling region.The black rock series is composed of black carbonaceous siliceous rocks,black carbonaceous siliceous rocks interbedded with argillite and argillite.The vanadium ore bodies are layered in form.The ore type is mainly black carbon-bearing siliceous rocks interbedded with argillite.The vanadium mineral is mainly roscoelite.The main components of the black rock series are SiO2,Al2O3 ... |
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| Keywords: | vanadium deposit black rock series hydrothermal sedimentation enrichment regularity Qianjiaping |
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