青龙满族自治县一带铁矿资源分布特征及远景评价初识

Distribution characteristics and prospective evaluation of iron ore resources in Qinglong Manchu Autonomous County

研究区铁矿位于青龙满族自治县,其沉积变质型铁矿成矿带的西北段,产于志留系温泉沟组海相碎屑-碳酸盐沉积浅变质岩层内,赋矿岩性为白色白云质大理岩、灰色-灰黑色大理岩化灰岩、钙质砂岩,受沉积层位控制。本文主要从区域地质、矿区地质、矿(化)体特征等方面进行分析,认为该铁矿床属沉积变质菱铁矿型铁矿床和构造热液成因菱铁矿,综合对该区地质特征进行分析和研究。

The iron ore in the study area is located in Qinglong Manchu Autonomous County,the northwest part of its sedimentary metamorphic iron ore belt,which occurs in the marine clastic carbonate sedimentary light metamorphic rocks of Wenquangou formation of Silurian system.The ore bearing lithology is white dolomitic marble,gray gray gray black marble,calcareous sandstone,which is controlled by the sedimentary horizon.In this paper,the regional geology,mining area geology and ore (chemical) body characteristics are analyzed.It is considered that the iron deposit belongs to sedimentary metamorphic siderite type and structural hydrothermal siderite.The geological characteristics of the area are analyzed and studied comprehensively.