陕西安康地区紫阳钒矿地质特征及钒赋存状态研究
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摘要
研究区位于南秦岭北大巴山构造带次级构造—焕古滩—流水店复式向形北翼,出露上震旦统—志留系浅海—深海相火山碎屑沉积岩、陆源碎屑沉积岩、生物化学沉积岩建造,其中寒武—奥陶系洞河群为钒矿赋矿层位。含矿岩性为含炭石英绢云母片岩,矿体受层位和F_1断裂控制。通过钒赋存状态分析研究,主要载钒矿物为绢云母、蛭石。钒矿以云母类中的钒为主,占75.60%;其次氧化铁及黏土矿物中的钒占21.76%;难溶硅酸盐中的钒很少,占2.64%。研究区钒以低价钒为主,占60.97%,其中三价钒占20.44%,四价钒占40.53%。紫阳钒矿是近年来在陕西南部新发现的中型钒矿床。对南秦岭安康—商洛地区寒武系黑色岩系钒矿勘查与开发具有指导意义。
The studied area is located in the northern flank of the Dabashan tectonic belt of the north Qinling mountains,where the cambrian-ordovician Donghe formation is composed of vanadium deposits.The ore-bearing lithology is carbonaceous silica sericite schist and the ore body is controlled by horizon and F_1 fault.Based on the analysis of vanadium occurrence status,the main vanadium bearing minerals are sericite and vermiculite.Vanadium was mainly in mica,accounting for 75.60%,following by vanadium in ferric oxide and clay minerals accounting for 21.76%,vanadium in refractory silicate was very little,accounting for 2.64%.The vanadium in the study area is given priority to with low vanadium,accounted for 60.97%;Three valence vanadium 20.44%,tetravalent vanadium accounting for 40.53%.Ziyang vanadium deposit is a newly discovered medium-sized vanadium deposit in southern Shaanxi province in recent years.This paper has a guiding significance for the exploration and development of vanadium ore of Cambrian black rock series in Ankang-Shangluo area of south Qinling mountains.
The studied area is located in the northern flank of the Dabashan tectonic belt of the north Qinling mountains,where the cambrian-ordovician Donghe formation is composed of vanadium deposits.The ore-bearing lithology is carbonaceous silica sericite schist and the ore body is controlled by horizon and F_1 fault.Based on the analysis of vanadium occurrence status,the main vanadium bearing minerals are sericite and vermiculite.Vanadium was mainly in mica,accounting for 75.60%,following by vanadium in ferric oxide and clay minerals accounting for 21.76%,vanadium in refractory silicate was very little,accounting for 2.64%.The vanadium in the study area is given priority to with low vanadium,accounted for 60.97%;Three valence vanadium 20.44%,tetravalent vanadium accounting for 40.53%.Ziyang vanadium deposit is a newly discovered medium-sized vanadium deposit in southern Shaanxi province in recent years.This paper has a guiding significance for the exploration and development of vanadium ore of Cambrian black rock series in Ankang-Shangluo area of south Qinling mountains.
引文
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[3]程德进.钒矿在下寒武系赋矿岩性层中的富集规律[J].中国高新技术企业评价,2014(10):83-84.
[4]谭兴华,王瑞廷,廖俊红,等.宁陕县大构园沟钒矿床地质特征及矿床成因探讨[J].西北地质,2014,47(1):171-178.
[5]陶蜜,汪志强,赵亮亮,等.陕西省安康紫阳地区钒金矿详查地质报告[R].汉中:汉中西北有色七一一总队有限公司,2018.
[6]张卫敏,胡近平.陕西山阳中村钒矿地质特征及富集规律[J].西北地质,2007,40(2):95-102.
[7]南怀方.东风山金矿床地质特征及成因探讨[J].有色金属工程,2018,8(1):93-97.
[8]李赛赛,魏刚锋,聂江涛,等.南秦岭水沟钒矿床地质地球化学特征及成因[J].现代地质,2012,26(2):243-253.
[9]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):1491-1500.