论文部分内容阅读
本矿床位于长白山,系老岭背斜中一个二級背斜西端的南翼。矿区由前震旦紀辽河系千枚岩和夹于其中的大理岩构成。在千枚岩之上下整合复盖着震旦系釣魚台石英岩,两系岩层间的不整合带,是由10—30公尺厚的礫岩组成,礫岩的礫石主要为千枚岩、石英与赤铁矿。在辽河系千枚岩之下(背斜軸部)为侵入接触的中生代白堊杞(?)花崗岩类。构成矿床的矿体,主要是赤鉄矿与磁鉄矿。赤鉄矿分佈在东山区,形状規則,多呈似层状,产状与圍岩略一致,除构造影响外,一般延伸較大。这种矿体一股与大理岩有着密切关系,大理岩常为矿体的下盘围岩。赤铁矿矿体中的脈石,以碳酸盐类矿物为
The deposit is located in Changbai Mountain, the southern slope of the western end of a secondary anticline in the Laoling anticline. The mining area consists of pre-Sinian Liaohe phyllites and marble sandwiched between them. The upper and lower phyllites cover the Sinian Diaoyutai quartzite, the unconformity between the two series of rock strata, which is composed of 10-30 meters of conglomerate, the gravel of conglomerate is mainly phyllite, quartz With hematite. Under the Liaohe system phyllite (anticline axis) intrusion contact the Mesozoic chalk Qi (?) Granites. The orebodies that make up the deposit are mainly red mines and magnetic mines. Chishui ore distribution in the Dongshan District, the shape of rules, mostly layered-like, occurrence and the rock is slightly the same, in addition to the structural impact, the general extension of larger. This kind of ore body is closely related to marble, which is often the ore body wall rock. Hematite ore gangue, carbonate minerals