河北中关铁矿矿床地质特征及成因探讨

Discussion on Geological Characteristics and Genesis of Zhongguan Iron Deposit in Hebei Province

摘要: 河北省为铁矿大省，矿床成因类型多样，冀东地区的沉积变质型铁矿、宣龙地区海相沉积型铁矿、大庙地区的岩浆型钒钛磁铁矿和邯邢–涞易地区的接触交代型铁矿。其中邯邢地区接触交代型铁矿品味高、储量大。河北中关铁矿位于晚三叠世–古新世大兴安岭–太行山版内造山带，矿区地层由上至下为石炭系砂页岩、中奥陶系，下–中奥陶系灰岩是中关铁矿的成矿围岩。中关铁矿在矿山村岩体、綦村岩体、新城岩体三大岩体中间部位。区内构造由两组次一级小背斜和向斜和F1、F2、F3三条压扭性正断层构成。本文通过介绍沙河市中关铁矿矿床地质特征，探讨分析该矿床成因，总结成矿规律。

Abstract: Hebei Province is a large iron deposit province with various genetic types, such as sedimentary metamorphic iron deposit in eastern Hebei, marine sedimentary iron deposit in Xuanlong area, magmatic vanadium-titanium magnetite in Damiao area and contact metasomatic iron deposit in Hanxing-Laiyi area. Among them, Hanxing contact metasomatic iron ore has high taste and large reserves. The Zhongguan iron deposit in Hebei Province is located in the late triassic Greater Khingan-Taihang Mountains plate Orogenic belt. The strata of the deposit are carboniferous sandstone shale, middle ordovician and lower-middle ordovician limestone. Zhongguan iron mine is located in the middle of three rock masses: Kuangshancun Rock Mass, Qicun rock mass and Xincheng rock mass. The structure in the area consists of two groups of minor anticlines and synclines and three compressive and torsional normal faults, F1, F2 and F3. In this paper, the geological characteristics of the Zhongguan iron deposit in Shahe, Hebei are introduced, the Genesis of the deposit is discussed, and the metallogenic regularity is summarized.