摘要
随着国民经济的快速发展,传统的铁矿资源越来越紧缺,迫切需要寻找和开发非传统的铁矿资源。河南嵩县南岭超贫磁铁矿(mFe,其含量为10.20%)品位低,易采易选,性质上可归属于非传统矿产资源。通过对南岭超贫磁铁矿的磁铁矿石、斜长角闪(片)岩化学成分的对比分析,结合矿区地质特征和矿体特征,对矿体进行n(Fe+Al+Ti)-n(Ca+Mg)和w(FeO+Fe2O3+TiO2)-w(Al2O3)-w(MgO)图解分析,结果显示南岭矿区的含磁铁斜长角闪(片)岩和斜长角闪(片)岩是大洋富铁拉斑玄武岩经变质作用而形成的,矿床的成因类型为风化残积型超贫铁矿床。进一步厘定了找矿标志,建立了找矿模式,对寻找南岭型铁矿有一定的借鉴意义。
Along with the fast development of national economy,the traditional iron resources are more and more scarce,it is urgent to seek and to develop non-traditional iron resources.The Nanling ultra poor magnetite can be imputed non-traditional mineral resource with mFe content of 10.20%.Through the contrast analysis on the chemical constitution of the magnetic iron ore and the plagioclase-amphibolite in Nanling ultra poor magnetite,and the analysis of graphs of（Fe＋Al＋Ti）-（Ca＋Mg） and（FeO＋Fe2O3＋TiO2）-Al2O3-MgO,combining the geological features of mining area and the ore body characteristics,the conclusion can be drawn as follows： the plagioclase-amphibolites including magnetite and the plagioclase-amphibolite in Nanling mining area are formed from the oceanic tholeiite with rich iron after the deteriorating,and their genesis types should be the ultra-poor iron deposit of weathered residual origin.The prospecting indicators have been cleared initially,and the prospecting pattern has also been established,it＇s significant for exploration of mineral deposits such as Nanling.
出处
《现代地质》
CAS
CSCD
北大核心
2010年第1期89-97,共9页
Geoscience
关键词
超贫磁铁矿
地质特征
成因
找矿模式
河南嵩县
ultra poor magnetite geological characteristic genesis prospecting pattern Songxian Henan
