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一、地质概况北疆富铁矿带位于阿尔太山山脉南缘山前地带。东起青河,向 NW 方向延经富蕴、阿勒太、布尔津、哈巴河县。国境内矿带长约420公里,宽25公里。阿—蒙铁矿带位于北疆富铁矿带的中段。蒙矿在东,阿矿在西、两区为一岩基状花岗岩岩体所隔。区内出露主要地层为下泥盆统的海相火山岩和中泥盆统的陆源碎屑岩,上泥盆统仅在测区外围零星分布。测区内的中泥盆统之上局部复盖有第三纪灰色砂砾岩。从建造分析,可划分为石英角斑岩—碳酸盐建造(包括 D_(1k)、D_(2a)~1)和复理石建造两大类(包括(D_(2a)~2)~(-4))。经变质后,形成各种变火山碎屑岩,变流纹岩、变火山熔岩、大理岩以及石英云母片岩和角闪斜长片岩为主的各类片岩。(其中兰晶石片岩、十字石片岩、红柱石片岩等从地质产状分析,应与动力变质和热接触变质作用有关)、板岩、变质泥砂岩等。
First, the geological profile Northern iron ore belt is located in the southern margin of the Altay Mountains foreland. East from the Green River, NW extended Fu Yun, Aleta too, Burqin, Habahe County. National territory of about 420 km ore belt, 25 km wide. A - Mongolia iron ore belt is located in the northern iron ore belt in the middle. Mine in the East, A mine in the West, two areas for a rock-like granite rock separated. The major strata exposed in the area are the Lower Devonian marine volcanic rocks and the Middle Devonian terrigenous clastic rocks, and the Upper Devonian is sporadically distributed only on the periphery of the survey area. The survey area of the upper Devonian covered on top of the Tertiary gray sandy conglomerate. From the analysis of the construction, it can be divided into two categories (including D_ (2a) ~ 2) and quartzite -4)). After metamorphism, the formation of a variety of volcanic clastic rocks, rhyolite, volcanic lava, marble and quartz mica schist and hornblende feldspar-based types of schist. (Among them, the Lanlan Shi schist, Phragmites schist, Andalusite schist etc. are related to the metamorphism and thermal contact metamorphism), slate, metamorphic siltstone and so on.