| 山东省齐河-禹城地区矽卡岩型铁矿磁铁矿元素地球化学特征及其对成矿作用的指示意义 |
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| 引用本文： | 李强,田思清.山东省齐河-禹城地区矽卡岩型铁矿磁铁矿元素地球化学特征及其对成矿作用的指示意义[J].山东国土资源,2021,37(1):1-9. |
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| 作者姓名： | 李强 田思清 |
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| 作者单位： | 山东省煤田地质规划勘察研究院；中国地球物理学会煤田地球物理重点实验室 |
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| 基金项目： | 山东省2019年度省级地质勘查项目,山东沂沭断裂带中段深部地质结构特征与稳定性评价(鲁勘字(2019)13号)。 |
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| 摘 要： | 山东省齐河-禹城地区在黄河北厚覆盖区,有明显的航磁异常和重力异常,通过系统的地质勘探工作,在深部揭露了多处铁矿床,为系统掌握研究区磁铁矿成因机制,服务于基础地质和矿产资源调查,利用EMPA对磁铁矿进行主量元素分析,以确定其成因及成矿环境特征.其中TiO2-Al2O3-MgO和(Ca十Al十Mn)-(Ti十V)成因判别图...
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| 关 键 词： | 矽卡岩型铁矿 磁铁矿 元素地球化学 齐河-禹城 山东省 |
Geochemical Characteristics of Magnetite Elements and Its Indication of Mineralization of Skarn Type Iron Deposit in QiheYucheng Area in Shandong Province |
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| LI Qiang,TIAN Siqing.Geochemical Characteristics of Magnetite Elements and Its Indication of Mineralization of Skarn Type Iron Deposit in QiheYucheng Area in Shandong Province[J].Land and Resources in SHANDONG Province,2021,37(1):1-9. |
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| Authors: | LI Qiang TIAN Siqing |
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| Institution: | (Shandong Coalfield Geological Planning and Investigation Institute, Shandong Ji'nan 250104, China;Key Laboratory of Coalfield Geophysics of China Geophysical Society, Shandong Ji'nan 250104, China) |
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| Abstract: | Qihe-Yucheng area in Shandong Province is in the deep coverage area in north of the Yellow River.There are obvious aeromagnetic and gravity anomalies.Through systematic geological exploration,several iron deposits have been found in the deep part in study area.In order to know genetic mechanism of iron deposit,serve basic geology and mineral resource survey,by using EMPA,major elements analysis has been carried out in order to determine its origin and ore-forming environment.As showed by magnetite genetic classification diagrams of TiO 2-Al 2O 3-MgO and(Ca+Al+Mn)-(Ti+V),magnetite belongs to magmatic hydrothermal and skarn genetic type.The relationship between FeO(total iron)and SiO 2,Al 2O 3,MgO is linear.It is implied that iron mineralization is in an alkaline environment.Combining with indication significance of V 2O 3,Cr 2O 3,TiO 2,Ga 2O 3 and SnO 2 to the degree of temperature and oxygen fugacity in the ore forming environment,it is regarded that mineralization mainly occurred in the late stage of magmatic crystallization differentiation.The metallogenic environment is characterized by high oxygen fugacity,low temperature and partial alkalinity. |
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| Keywords: | Skarn iron deposit magnetite mineralogy and geochemical Qihe-Yucheng Shandong province |
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